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	<title>Topvelocity.net&#187; enhancement</title>
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	<description>Everything Pitching Velocity! Velocity Mechanics, Velocity Drills, Velocity Training and much more.</description>
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		<title>What it Takes to Gain Velocity</title>
		<link>http://www.topvelocity.net/what-it-takes-to-gain-velocity/</link>
		<comments>http://www.topvelocity.net/what-it-takes-to-gain-velocity/#comments</comments>
		<pubDate>Wed, 17 Jun 2009 19:56:44 +0000</pubDate>
		<dc:creator>Brent Pourciau</dc:creator>
				<category><![CDATA[Pitching Articles]]></category>
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		<guid isPermaLink="false">http://topvelocity.net/?p=1574</guid>
		<description><![CDATA[If you haven&#8217;t figured it out yet, velocity doesn&#8217;t come in a pill. Sorry to bust your bubble but it takes a lot of hard and smart work to develop it. If you are looking to gain 4-5 mph on your fastball then you must work to improve in all facets of pitching. These facets [...]]]></description>
			<content:encoded><![CDATA[<p><a href="http://up.topvelocity.net/uploads/2009/06/plategroup.jpg"><img class="alignnone size-medium wp-image-1577" style="float: right; margin: 5px;" title="plategroup" src="http://up.topvelocity.net/uploads/2009/06/plategroup-243x300.jpg" alt="plategroup" width="113" height="140" /></a>If you haven&#8217;t figured it out yet, velocity doesn&#8217;t come in a pill. Sorry to bust your bubble but it takes a lot of hard and smart work to develop it. If you are looking to gain 4-5 mph on your fastball then you must work to improve in all facets of pitching. These facets include:<span id="more-1574"></span></p>
<blockquote><p>Efficient and effective pitching mechanics.</p></blockquote>
<blockquote><p>An explosive fast twitch focused total body.</p></blockquote>
<blockquote><p>Proper nutrition and supplementation.</p></blockquote>
<blockquote><p>A healthy mental approach and faith in something greater than yourself.</p></blockquote>
<p>I understand this news can be overwhelming and a buzz killer but if gaining velocity was easy and could come in a pill form then everyone would be doing it and 90 plus mph would become average. If you want to be extraordinary then you must live to be extraordinary. Listed below are some links to get you on the right track to developing velocity, that you are so determined to obtain, in such a short period of time.</p>
<h2>Velocity enhancement links:</h2>
<h3><a href="http://topvelocity.net/10-legitimate-tips-to-pitching-velocity/">10 Legitimate Tips to Pitching Velocity</a></h3>
<h3><a href="http://topvelocity.net/triple-extension-3x-pitching/">Triple Extension – 3X Pitching</a></h3>
<h3><a href="http://topvelocity.net/ace-pitcher-handbook/">Ace Pitcher Handbook :: Fusion System and the 6 Components to Pitching Velocity</a></h3>
<h3><a href="http://baseballvideostore.com/index.php?main_page=product_info&amp;cPath=1&amp;products_id=1&amp;zenid=05ab53230045bc807add6c1162ec9114">Baseball Video Store :: Ace Pitcher Power Pitching video</a></h3>
<h3><a href="http://topvelocity.net/baseball-pitching-workout-beginner/">Beginner Total Body training program</a></h3>
<h3><a href="http://topvelocity.net/pitching-velocity-drills-the-sled/">Velocity Drill :: The Sled</a></h3>
<p>More to come&#8230;..</p>
]]></content:encoded>
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		<title>Can Working Out Increase Pitching Velocity?</title>
		<link>http://www.topvelocity.net/can-working-out-increase-pitching-velocity/</link>
		<comments>http://www.topvelocity.net/can-working-out-increase-pitching-velocity/#comments</comments>
		<pubDate>Wed, 10 Dec 2008 06:57:41 +0000</pubDate>
		<dc:creator>Brent Pourciau</dc:creator>
				<category><![CDATA[Pitching Articles]]></category>
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		<guid isPermaLink="false">http://topvelocity.net/?p=858</guid>
		<description><![CDATA[I have heard many players and coaches say that working out will not increase pitching velocity. I have even heard them say that it will hurt the pitcher. I understand that this is many parents, coaches and players converns because it seems to be conventional wisdom but I will be the first to tell you [...]]]></description>
			<content:encoded><![CDATA[<p>I have heard many players and coaches say that working out will not increase pitching velocity. I have even heard them say that it will hurt the pitcher. I understand that this is many parents, coaches and players converns because it seems to be conventional wisdom but I will be the first to tell you that if you just do your research you will learn otherwise. It will also prove to you that those who are spreading these rumors about working out and pitching have not done their research. </p>
<p>When someone tells me that working out is bad for pitching I then ask them then why is about 70% of Major League Ball Players on Steroids or Human Growth Hormone? It isn&#8217;t because they just want to look good on TV. I then ask them why was the majority of the ball players listed on the Michell Report pitchers? I always get a few stutters followed by silence. <span id="more-858"></span></p>
<p>This does make a good point so I wanted to back up this claims with the list of pitchers who are on the Mitchell Report. It definitly does make a big statement. These pitchers where suspended for using steroids or HGH.</p>
<p><img class="alignnone size-medium wp-image-859" style="float: right; margin: 5px;" title="gotjuice" src="http://up.topvelocity.net/uploads/2008/12/gotjuice-264x300.jpg" alt="" width="264" height="300" />Agusten Montero<br />
Juan Rincen<br />
Rafael Betancourt<br />
Ryan Franklin<br />
Carlos Almanzar<br />
Felix Heredia<br />
Yusaku Iriki<br />
Jason Grimsley<br />
Guillermo Mota<br />
Juan Salas<br />
Clay Hensley<br />
Grant Roberts<br />
Matt Whiteside<br />
Nerio Rodreguez<br />
Henry Owens<br />
Roger Clemens<br />
Andy Pettitte<br />
Kevin Brown<br />
Jason Christiansen<br />
Brendan Donnelly<br />
Ryan Franklin<br />
Eric Gagne<br />
Matt Herges<br />
Josias Manzanillo<br />
Kent Mercker<br />
Bart Miadich<br />
Denny Neagle<br />
Jim Parque<br />
Stephen Randolph<br />
Mike Stanton<br />
Ron Villone<br />
Jeff Williams<br />
Todd Williams<br />
Paul Byrd<br />
Darren Holmes<br />
John Rocker<br />
Scott Schoeneweis<br />
Ismael Valdez<br />
Steve Woodard<br />
Daniel Naulty<br />
Ricky Bones<br />
Paxton Crawford<br />
Mike Judd<br />
Ricky Stone</p>
<p>Believe me this is a short list. Think of all the Pitchers who didn&#8217;t make the list who are on these performance enhancers. If you need a reference to this information here are the links to the Mitchell report and all Pitchers suspended after the report came out.</p>
<p><a href="http://en.wikipedia.org/wiki/List_of_Major_League_Baseball_players_named_in_the_Mitchell_Report" target="_blank">http://en.wikipedia.org/wiki/List_of_Major_League_Baseball_players_named_in_the_Mitchell_Report</a></p>
<p><a href="http://en.wikipedia.org/wiki/List_of_Major_League_Baseball_players_suspended_for_performance-enhancing_drugs">http://en.wikipedia.org/wiki/List_of_Major_League_Baseball_players_suspended_for_performance-enhancing_drugs</a></p>
<p>I mean honestly, how could someone truly believe that strength and conditioning will not improve your velocity or speed? This is the only reason athletes take performance enhancers like steroids and HGH. Those of us in pro sports who didn&#8217;t take them where definitely tempted. We all knew that if you took <a title="Growth hormone treatment" href="http://en.wikipedia.org/wiki/Growth_hormone_treatment">human growth hormone</a>, <a title="Nandrolone" href="http://en.wikipedia.org/wiki/Nandrolone">Deca-Durabolin</a>, <a title="Stanozolol" href="http://en.wikipedia.org/wiki/Stanozolol">Winstrol</a>, <a title="Sustanon" href="http://en.wikipedia.org/wiki/Sustanon">Sustanon</a>, and <a title="Oxymetholone" href="http://en.wikipedia.org/wiki/Oxymetholone">Anadrol</a> separately or all together before a workout, without dying, after a few months you would be throwing a lot harder. Notice I said dying. Yes, we knew it was dangerous and that is why some of us didn&#8217;t take it. Also because the league wasn&#8217;t offering us &#8220;No Namers&#8221; millions of dollars to play better.</p>
<p>It is just absurd to say that strength and conditioning does not increase velocity. It is even more absurd to follow that with &#8220;Only pitching mechanics improvement can do that while using mental rehearsal prior to each pitch with the<strong> intention of moving the body faster.</strong>&#8221; If your body is growing stronger, will it not have more ability to move faster? If strength and conditioning didn&#8217;t increase pitching velocity, personally I would have never played ball again after my rotator cuff surgery. </p>
<p>I am in NO way promoting steroid or HGH use to increase velocity. I believe this to be more destructive than helpful in the long term. This is why I recommend the <a href="http://topvelocity.net">3X Pitching Velocity Program</a>. This is the same program I used to not only make it back to baseball after a career ending rotator cuff tear but also play pro ball and top out at 94mph. </p>
<p>Read my article on &#8220;<a href="http://topvelocity.net/olympic-velocity/">Olympic Lifting Increases Pitching Velocity</a>,&#8221; to learn more about this topic.</p>
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		<title>The Principle of Specificity and Sport</title>
		<link>http://www.topvelocity.net/the-principle-of-specificity-and-sport/</link>
		<comments>http://www.topvelocity.net/the-principle-of-specificity-and-sport/#comments</comments>
		<pubDate>Sun, 24 Aug 2008 17:33:16 +0000</pubDate>
		<dc:creator>Brent Pourciau</dc:creator>
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		<guid isPermaLink="false">http://topvelocity.net/?p=113</guid>
		<description><![CDATA[by Chad Englehart Introduction Specificity of Training principle is one of the most utilized training principles used by exercise professionals today. (Kramer et al., 2002) discussed the principle of training specificity and explained that the training responses elicited by a given exercise mode are directly related to the physiological elements involved with coping with the [...]]]></description>
			<content:encoded><![CDATA[<p><strong>by Chad Englehart</strong></p>
<p><strong>Introduction</strong></p>
<p><img class="alignnone size-medium wp-image-115" style="float: right; margin-left: 10px; margin-right: 10px;" title="sport" src="http://up.topvelocity.net/uploads/2008/08/sport-300x225.jpg" alt="" width="300" height="225" />Specificity of Training principle is one of the most utilized training principles used by exercise professionals today. (Kramer et al., 2002) discussed the principle of training specificity and explained that the training responses elicited by a given exercise mode are directly related to the physiological elements involved with coping with the specific exercise stress. What this means is that if an athlete wants to perform better at a particular event or skill they must train specifically for that particular skill. For example, if an athlete wants to become stronger one must lift heavy weights and if an athlete wants to jump higher one must jump. As a strength and conditioning<span id="more-113"></span> professional one must know if the movement patterns as well as the methods of the training will lead to neuromuscular or metabolic training adaptations to their specific sport. This goes back to an important rule of coaching which is, &#8220;Know your athletes.&#8221; This is important because if a strength and speed coach wants to work on a vertical jump for a 15 year old female volleyball player and she does not have the lower body strength to handle the eccentric load of landing or she does not know how to land she could injure herself. Therefore, before training specifically to enhance particular sports movements always evaluate the athlete first.</p>
<p>The principle of specificity is also important for Strength and Speed coaches when designing strength and speed programs to their particular sport. The coach must know the type neuromuscular adaptations the athletes need during the particular time of the year whether; it is off-season, pre-season or in-season this is important because as a coach, one does not want to stress the neuromuscular system. Ronnie McKeefey Head Strength and Conditioning Coach for The University of South Florida believes that sport specificity goes too far when exercises that are prescribed place undue orthopedic stress on the body and are not principled based. He goes on to explain that there must be more exercise than just trying to mimic sport movements while under load (2). Specificity is important principle in all of these training modules because the exercise or training protocol must be specific to the type of action required so that the body is neuromuscular adapted to the particular demands of the type of training.</p>
<p><strong>Research Finding and Specificity </strong></p>
<p>As professionals coaches understand that explosive Olympic lifting and other forms of weight training will help athletes on the field however, many coaches feel that a sprint training program should also include strength specific exercises like sled sprints or weighted sprints. Young, W., Grant, D., and Pryor, J., (2001) did a study on resistance training for short sprints and maximum-speed sprints and found that the quadriceps muscles were important for short sprints and the hamstrings were more important for maximum sprinting. They go on to explain some specificity exercises for sprinting, for the short sprints 10 meter or less the exercises are sled sprints and inclined sprints both from static standing starts. The maximum speed exercise were speed bounding and weighted vest sprinting. As strength and conditioning professional these are great specific exercises to help become a faster athlete. The short sprint exercises really target the quadriceps and glutes, helps with stride frequency and helps increase the force on the motor units. The max speed exercises target the hamstrings, helps with stride length and helps increase the rate of the motor units. This is a great specificity example for speed because through this specificity training an athlete has increased the size and force of the motor unit as well as the rate at which the motor unit fires which in turn with proper mechanics should make the athlete a faster runner. Alcaraz, P., Palao, J., Elvira, J., and Linthorne, N., (2008) also did a study on resistance sprinting but they wanted to find out more specifically the effects of three different types of resisted sprint training on the kinematics of sprinting at maximum velocity. They used three types of resisted sprint training devices which were a sled, parachute, and weighted belt to compare sprinting kinematics during maximum velocity. What they found was that all three types were appropriate training for the maximum velocity phase of sprinting and only induced minor changes in the athletes running technique. These two studies are great examples on the specificity principle they show if an athlete&#8217;s wants to get faster than the athlete must sprint to become faster.</p>
<p>Another athletic movement that we train specifically is the vertical jump. Although as professionals one knows that resistance training and explosive training can get you stronger but if an athlete wants to jump higher than they must train using plyometrics. McClenton, L., Brown, J., Coburn, J., and Kersey, R., (2008) did a short term study on the Verti-max vs. Depth jump training and its effect on vertical performance. The verti-max is a training apparatus that uses rubber bands and a pulley system that fully loads the athlete in the low squat position, and then maintains this same level of resistance all the way to the top of the jump. The depth jump is a plyometric exercise that rapidly utilizes the stretch shortening cycle. This exercise consists on stepping off a box landing with both feet, then jumping off the ground as fast and as high as possible. During this six week study they found that the verti-max had no improvement on the vertical jump and the depth jump had significant improvement. Both are very good specific exercises but the verti-max costs nearly $2,000.00 and for the depth jump all an athlete needs is a box. The depth jump also in my opinion is a better exercise if strong enough because of the rapid eccentric movements which in turn causes a rapid concentric movement. Wagner, DR and Kocak, MS (1997) explains that the faster a muscle is stretched the greater the force production and the more powerful the muscle action; which, explains why the depth jump is a more efficient exercise when coached and performed properly.</p>
<p>Resistance training is one of the most important aspects to the specificity principle. There are many types of possible outcomes in resistance training; which include endurance, hypertrophy, strength, and power. As strength and conditioning professionals one must know what to train for and at what time of the year to train for the particular outcome. Behm, D. (1995) did a study on the neuromuscular implications and applications of resistance training specifically on strength and power training. This study explained that the high rate of force development achieved with ballistic contractions should serve as a template for power training; and that muscle hypertrophy is dependent upon protein degradation and synthesis, which may be enhanced through high intensity, high volume eccentric work and concentric contractions. One of the most interesting parts of this research was the part on power training. Behm believes that the high-speed training may increase the rate of force development through an increase in the firing frequency or the motor units. He goes on to explain that to guarantee high-specific adaptations in a power training program the speed of the contraction must be high and that the movement speed is not essential as long as the intent of the contraction is explosive. Saltin and Gollnick (1983) showed through their research that with endurance training, muscle fibers shift towards a slow profile thus allowing those muscles fibers to increase their endurance capacity. Staron, Malickly, Leonardi, Falkel, Hagerman, and Dudley (1990) did a study on muscle hypertrophy and fast fiber types in heavy resistance-trained women and found that heavy resistance training results in a shifting of the rarely used fast twitch B fibers to heavily used fast twitch A fibers; which, allow more fibers to be called upon to produce force for faster and more forceful explosive movements. This type of research on resistance training shows that if an athlete requires muscular endurance, strength, size or explosiveness there are specific training patterns. The strength and conditioning professional must follow the specific training protocols to ensure that the neuromuscular system is adapting to the training properly so that the athletes body can perform better in his or her sport.</p>
<p><strong>Conclusion</strong></p>
<p>In closing, Zatsiorsky (1995) explains that the training principle on specificity is well accepted and suggests that for training to be effective, it should be similar to the demands of the sport. Usually, the more specific the training, the better the transfer to sports performance. All though that last statement may be true, many strength and conditioning professionals including myself believe non-specific training should also take place in a training program not only to achieve a higher level of ability but for also injury prevention. Keep in mind, training first started to prevent injury and later professionals discovered that training can also improve performance. Finally, as a strength and conditioning professional one must know the performance goals of the sport which will help the professional dictate the type of training for the athlete or team; and while every possible type of sports movement cannot be simulated in the weight room, there are other non-specific sports movements and exercises that will stimulate the neuromuscular system which will help athletes when they go into competition.</p>
<p align="center"><strong>References</strong></p>
<ol>
<li>Behm, D.G. Neuromuscular Implications and Applications of Resistance Training. <em>Journal of Strength &amp; Conditioning Research.</em> 9(4): 264-274. 1995.</li>
<li>Bennett, Scott. Sport Specificity: How far Do you take it? Strength and Conditioning Journal. 28(4): 29-30. 2006.</li>
<li>Eduardo SÃƒÂ¡ez SÃƒÂ¡ez, GonzÃƒÂ¡lez-Badillo, Juan Jose, Izquierdo, Mike .Low and Moderate Plyometric Training Frequency Produces Greater Jumping and Sprinting Gains Compared with High Frequency. <em>Journal of Strength and Conditioning Research</em>. 22(3): 715-725. 2008.</li>
<li>Kramer, JF, Morrow, A, and Leger, A. Changes in rowing ergometer, weight lighting, vertical jump and isokinetic performance in response to standard and standard plus plyometric training programs. <em>Int J Sports Med</em> 14: 449-454, 1983.</li>
<li>McClenton, L., Brown, Lee, Coburn, J., Kersey, R., The Effect of Short-Term VertiMax vs. Depth Jump Training on Vertical Jump Performance. <em>Journal of Strength &amp; Conditioning Research.</em> 22(2): 321-325. 2008.</li>
<li>Saltin B and Gollnic PD. Skeletal muscle adaptability: Significance for metabolism and performance. In <em>Handbook of Physiology</em> (eds. L. Peachy, R. Adrian, and SR Gerzer). American Physiological Society: Bethesda, MD, 555-631, 1983.</li>
<li>Staron RS, Malicky ES, Leonardi MJ, Falkel JE, Hagerman FC, and Dudley GA. Muscle hypertrophy and fast fiber type conversions in heavy resistance Ã¢â‚¬â€œtrained women. <em>European Journal of Applied Physiology and Occupational Physiology</em> 60, 71-79, 1990</li>
<li>Wagner, DR and Kocak, MS. A multivariate approach to assessing anaerobic power following a plyometric training program. <em>Journal of Strength &amp; Conditioning</em><em>Research</em>.11: 251-255, 1997.</li>
<li>Young, Warren PhD, Benton, Dean, Pryor, John,. Resistance Training for Short Sprints and Maximum-speed Sprints. <em>Strength &amp; Conditioning Journal</em>. 23(2): 7-13. 2001.</li>
<li>Zatsiorsky, V.M. <em>Science and Practice of Strength Training</em>. Champaign. IL: Human Kinetics, 1995.</li>
</ol>
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		<title>Resisted Sprints and Effects on Kinematics and Sprint Speed</title>
		<link>http://www.topvelocity.net/resisted-sprints/</link>
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		<pubDate>Sun, 24 Aug 2008 17:16:18 +0000</pubDate>
		<dc:creator>Brent Pourciau</dc:creator>
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		<description><![CDATA[by Chad Englehart Speed Training Implied in any linear speed discussion with a Strength and Conditioning Specialist, is the concept of resisted speed training strategies. Some professionals consider resisted speed training as the most efficient sprint training technique on the planet, while other consider it not as effective because of a biomechanical stand point. Different [...]]]></description>
			<content:encoded><![CDATA[<p><strong>by Chad Englehart</strong></p>
<p><strong>Speed  Training</strong></p>
<p><img class="alignnone size-medium wp-image-107" style="float: right; margin-left: 10px; margin-right: 10px;" title="speed" src="http://up.topvelocity.net/uploads/2008/08/speed-300x225.jpg" alt="" width="300" height="225" />Implied in any linear speed  discussion with a Strength and Conditioning Specialist, is the concept of  resisted speed training strategies. Some professionals consider resisted speed  training as the most efficient sprint training technique on the planet, while  other consider it not as effective because of a biomechanical stand point. Different  resisted speed strategies include, towing, uphill sprints, sand sprints, and  weighted sprints. Tahachnik (1992) explained that towing of weighted devices  such as sleds and tires is the most common method of providing towing  resistance for the enhancement of sprint performance, although the use of  parachutes has also<span id="more-103"></span> been documented. In fact, resisted towing can involve an  athlete towing a weighted sled, tire, speed parachute, or some other device  over a set distance (Faccioni 1994).</p>
<p>The function of resisted towing is  said to improve the acceleration or drive phase of a sprint. Acceleration is  integral to successful performance in the various football codes, including  Australian rules, rugby union, and soccer and is potentially decisive in  determining the outcome of a game (Spinks et al. 2007). It has been said that  resisted towing will increase muscular force output, especially at the hip, knee,  and ankle. According to researches improved strength levels allow for the  production of greater force and decreased ground contact time, leading to a  possible increase in stride frequency. Increased stride length may be achieved  by improved utilization of elastic energy during the support stage of the  sprint cycle (Spinks et al. 2007).</p>
<p>Regardless  of the many benefits of resisted towing speed training, the most effective type  of resistant speed training for overall speed and acceleration remains for the  most part uncertain.</p>
<p><strong>Resistant  Towing </strong></p>
<p>Weighted  sled towing is a common resisted sprint training technique even though relatively  little is known about the effects that such practice has on sprint kinematics.  Lockie, R.G., A.J. Murphy, and C.D. Spinks (2003) examined twenty men, which completed  a series of sprints without resistance and with loads equating to 12.6% (load1)  and 32.2% (load 2) of body mass. Through their findings the participants stride  length was significantly reduced by 10% with a 12.6% load and lowered 24% with  a 32.2% load. Stride frequency did not change from load 1 to load 2 and only  dropped by 6% between the unloaded and loaded trials. In addition, sled towing  increased ground contact time, trunk lean, and hip flexion in both loads but,  more of an increase happened with load 2.   As for the upper body, the results showed an increase in shoulder range  of motion with added resistance. The heavier load generally resulted in a  greater disruption to normal acceleration kinematics compared with the lighter  load. Lockie, R.G., A.J. Murphy, and C.D. Spinks concluded that a lighter load  is most likely best for use in a speed training program.</p>
<p><img class="size-medium wp-image-111 alignleft" style="margin-left: 10px; margin-right: 10px;" title="chute" src="http://up.topvelocity.net/uploads/2008/08/chute-300x187.jpg" alt="" width="300" height="187" />Letzelter et al. (1995) studied the  acute effect that different loads had on performance variables with a group of  female sprinters during sled towing. The research found that a 2.5-kg load  resulted in an 8% decrease in performance over 30 m, and 10 kg resulted in a  22% decrease in sprint performance. Stride length was affected to a greater degree  than stride frequency by the increased resistance. As the load increased, the  stride length decreased which, accounted for the decrease in velocity speed.  Increased loads also caused increased upper-body lean and increased thigh angle  at both the beginning and the end of the stance phase.  Regrettably, Letzelter et al. did not quantify  towing loads relative to body mass or provide anthropometric data on the  subjects. It is therefore complicated to relate the results found to earlier recommended  loading guidelines.</p>
<p>Spinks C.D.,  Murphy A.J., Spinks W.L., Lockie R.G. (2007) did a study on effects of  resisted sprint training on acceleration performance and kinematics and found  that an 8 week resistant speed training group significantly improves  acceleration and leg power but, is no more effective than an 8 week non  resistant speed training program. Although the study did not find it more effective,  how can an athlete increase force production and not increase speed, maybe  longer research study should take place.</p>
<p>Both Lockie et al., Letzelter et al.  and SpinkÃ¢â‚¬â„¢s et al. studies concluded that the athletes stride length decreased  as the load increased. Mutually, both also found that stride frequency did not  change much at all with the different loads. Although this is great information  neither one of the researchers put any of this to the real test, Ã¢â‚¬Å“Can towing  increase speed?Ã¢â‚¬Â They both gave great information but what coaches want to see  are results. A good number of coaches by now should know that your speed is  only as good as your technique but, if a greater load can increase arm speed  which both researchers agreed, and arm speed accounts for 15-20% speed how can  both suggest a lighter load is better for speed training, more research is  needed.</p>
<p><strong>Other  Types of Resisted Speed Training</strong></p>
<p><strong> </strong>Supplementary,  to towing there are many other types of resistant training. Some other types of  resistant speed training are weighted vest, uphill running, and sand sprinting.</p>
<p><span style="float:left;margin:5px;"><!--adsense--></span>A study by Bosco et al. (1986)  looked at the effect of increasing body weight (7 to 8%) on sprint athletes  over a three-week period, training 3 to 5 sessions per week. The added  resistance through weighted vests was worn from morning to evening and the  athletes were tested for jumping and running on a treadmill, pre and post  experiment. The jump tests included squat jumps, countermovement jump, drop  jump and 15 seconds continuous jumps on a resistive platform. The squat jump  improved 4.5 cm which helped the hypothesis that the increased loading would  have a positive effect upon force production and running speed. Another  positive effect of weight vest is that the added mass would increase the vertical  force at each ground contact; which would increase the stress placed on the  stretch shortening cycle (reactive strength). This would improve the muscleÃ¢â‚¬â„¢s  capacity to tolerate greater stretch loads, store more elastic energy, and  improve power output, which may increase in stride length. Although Bosco et al  (1986). brings up great and valet points about the SSC, how does he know for  sure if increasing vertical force in the ground is even beneficial as far as  sprinting goes. Remember, your speed is only as good as your technique.</p>
<p>Uphill sprinting had a study  conducted by Kunz &amp; Kaufmann (1981) on sprint kinematics maximal sprinting  up a 3% incline. They found the velocity to be slower than that of level ground  running (8.35m/s to 8.85m/s) and that the subjects sprint kinematics had shorter  stride lengths and longer ground contact times. Kunz &amp; Kaufmann believe  that uphill sprinting will increase the stress placed on the hip extensor  muscle groups as the athlete will attempt to maximize stride length, therefore  increasing this component on the flat surface. They feel this training method  will develop a shorter ground contact time if the athlete emphasizes fast push  off to conquer the effects of the positive grade. An incline of greater than 3%  would still be beneficial in developing the forceful hip extensor movements  required but will be less specific in the simulation of the specific technical  movements of the sprint.</p>
<p>Sand sprinting had little to no  research on it. The little research on sand sprinting concluded that it helped  increase hamstring strength as well as its flexibility due to the sands  unstable surface. Oviatt and Hemba (1991) wrote an article named Sand Blast and  in it, stated that Ã¢â‚¬Å“Walking in the sand, however, is almost twice as costly (energy  expenditures for physical activity) as walking on firm turf. It follows that  sprinting in the sand will compound energy expenditures of a 50% increase. In  other words, you can get twice the cardiovascular conditioning in half the  time, which, is important because body fat between muscle fibers inhibit rapid  contractions of the involved muscle.</p>
<p><strong>Resisted  Towing and Kinematics</strong></p>
<p><strong> </strong>Steven LeBlanc and Pierre L<strong> </strong>Gervais (N/A)  researched the basic kinematics of sprinting under assisted and resisted  conditions as compared to free sprinting in the acceleration and top-speed  phases. Free Sprint and assisted sprint kinematics will not be discussed in  this section only resisted kinematics compared to sprint start will be  discussed because of resisted sprints have more of an impact on acceleration.  LeBlanc and Gervais completed 3 trials of resisted sprinting, and a sprint  start, using 1 female and 5 male track and field athletes from the University  of Alberta. Each sprint was approximately 50m in distance, the participants  were also filmed. The linear kinematic measures of interest included average  running speed, stride rate, stride length, and ground support time. Angular  kinematic measures of interest included average trunk angle, thigh range of  motion and peak velocity. The resisted sprinting condition used a parachutechute  approximately 1 m2 attached to a waist belt and subjects were given  a 30m acceleration zone prior to the filming area to reach top running speed.  For the sprint start condition, the blocks were setup 20m prior to the filming  area. They established is that there were no significant differences in any of  the kinematics being tested and that RS and SS were very similar in average  running speed (8.74 m/s vs. 8.76 m/s), stride length (4.03 m vs. 3.92 m), and  support time (0.122 s vs. .123 s). This suggests that resisted sprinting has  similar kinematics to the acceleration phase of sprinting much more than the  velocity phase.</p>
<p><strong> </strong></p>
<p><strong>Conclusion</strong></p>
<p>Resistant  speed trainingÃ¢â‚¬â„¢s research on overall effectiveness indicated that all but sand  sprinting decreased stride length and had little or no change to stride  frequency. Most of the research confirmed that resistant towing is very similar  to the acceleration phase of a sprint which is the start.  However, there is no well-built indication any  of these types of resistant training are better than the other.</p>
<p><span style="float:right;margin:5px;"><!--adsense--></span>From a coaching stand point many  professionals today prefer towing because of the trunk position having a  forward lean. An athlete cannot have that much of a forward lean with any other  resistant speed exercise because of gravity. Sprinting uphill may come a very  close second but still one cannot accomplish the lean of that with a weighted  sled. Even with the weighted vest the research indicated that the force in the  ground hit vertical meaning the athletesÃ¢â‚¬â„¢ ground time was too long. The reason  for this may be because the athletes in the research could not handle the  weight of the vest and stood up tall to not fall over; keep in mind, many  coaches look at a sprint as just a controlled fall. Sand sprinting is also a  great resistant speed exercise but, there just is not enough research and data  on this type of resistant exercise to put it at the top.</p>
<p>Resistant  towing had the majority of the research in all the resistant training  modalities but, all had the same conclusions decreased stride length and had  little or no change to stride frequency and increased muscular force output,  especially at the hip, knee, and ankle. In fact, Mero (1998) found a high  correlation between force production in the start and in the velocity phase of  the sprint. This indicates a high level of fast force production in top  sprinters and reaffirms the importance of strength during the acceleration  phase of sprinting which, one can get through resisted speed training.</p>
<p>In  the future, there needs to be more research with resistant speed training. For  instance, the Spinks (2007) study indicated that there was not significant  increase in sprint performance comparing resisted sprint training and non resistant  sprint training but, did they take sprint technique or start technique in  consideration. As mentioned previous if an athlete can increase ground force  through resisted towing as Spinks (2007) mentioned, how can the athlete not  become faster with the proper coaching on the technique of sprinting. That is  what wrong with the research, there is a lot of research but very little  coaching in the research.</p>
<p>Issues  in research for resistant speed training should compare different types of  resistant training with proper speed technique coaching and see how they  compare to overall speed improvement and kinematics. The reason kinematics is  still important is because again an athletesÃ¢â‚¬â„¢ speed is only as good as their  technique.  It is great to know from all  this research what is happening biomechanically or muscularly but, the  important outcome to all is which will help make you faster in the shortest  amount of time. Coaches and athletes want to know the best modalities of  resistant speed training and how they compare to each other, more importantly  how they compare to overall speed improvement.</p>
<p align="center"><strong>References</strong></p>
<ol>
<li>Bosco, C.,  Rusko, H., and Hirvonen, J. (1986). The effect of extra-load conditioning on  muscle performance in athletes. <em>Medicine and Science in Sports and Exercise</em>.  18(4), 415-419.</li>
<li>Faccioni,  A., (1993) <a title="Resisted and assisted methods for speed development. Part 2." href="http://proxy2.atsu.edu:2254/ehost/viewarticle?data=dGJyMPPp44rp2%2fdV0%2bnjisfk5Ie46bJJtKu3UK%2bk63nn5Kx95uXxjL6qrUqvpbBIrq6eSbCwski4qa44v8OkjPDX7Ivf2fKB7eTnfLujr063qbNQtam3S6Ti34bls%2bOGpNrgVfGp5j7y1%2bVVv8Skeeyz0WjGqbBQt6azPuTl8IXf6rt%2b8%2bLqjOPu8gAA&amp;hid=7">Resisted  and assisted methods for speed development. Part 2.</a> <em>Strength &amp;  Conditioning Coach.</em> 1(3), 7-10</li>
<li>Gervais, P.,  LeBlanc, J. S. (N/A).  <a href="http://www.ssaa.ca/pdf/Sprinting.pdf" target="paper">Biomechanical analysis  of assisted and resisted sprinting.</a> <em>Faculty  of Physical Education and Recreation, University of Alberta, Edmonton, Alberta,  Canada.</em> 1-4.</li>
<li> Kunz, H., Kaufmann,  D.A. (1981) Biomechanics of hill sprinting. <em>Track Technique.</em> (82), 2603-2605.</li>
<li>Letzelter,  M., Sauerwein, G., and Burger, R. (1995). Resistance runs  in speed development.       <em>Modern  Athlete and Coach. </em>(33), 7Ã¢â‚¬â€œ12.</li>
<li>Lockie,  R.G., A.J. Murphy and C.D. Spinks. (2003). Effects of  resisted sled towing on sprint      kinematics in field sport athletes. <em>The</em> <em>Journal of Strength and Conditioning Research</em>. 17(4), 760-767.</li>
<li>Mero, A. (1988).  Force-time characteristics and running velocity of male sprinters during the  acceleration phase of sprinting. <em>Research Quarterly for Exercise</em> <em>and  Sport, </em>59(2), 94-98.</li>
<li>Oviatt, R. and  Hemba, G. (1991). Oregon State: Sandblasting through the PAC. <em>National Strength &amp;  Conditioning Association Journal</em>. 13(4), 40-46.</li>
<li>Spinks  C.D., Murphy A.J., Spinks W.L., Lockie R.G. (2007). The  effects of resisted sprint training on acceleration performance and kinematics  in soccer, rugby union, and Australian football players.  <em>The Journal Of Strength And Conditioning Research. </em>21 (1), 77-85.</li>
<li>Tabachnik,  B. (1992). The speed chute. <em>National Strength  &amp; Conditioning Association Journal</em>. 14(4), 75- 80.</li>
</ol>
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