PED 1323 Motor Control & Motor Learning

Performed 3 4 sets of two sport specific exercises

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performed 3-4 sets of two sport-specific exercises with a load of 80% 1- repetition-maximum. The two training programs differed only in the time taken to complete the concentric phase of the exercises: slow, 1.7 s; explosive, <0.85 s. To determine the effects of training on sprint acceleration and speed maintenance, the athletes performed 15-m kayaking sprints pre- and posttraining; an electronic timing system provided sprint times at 3.75-, 7.5-, and 15-m marks. RESULTS: Relative to control, both types of weight training substantially improved strength and sprint performance. The improvements in mean sprint time over 15 m in each group were: slow, 3.4%; explosive, 2.3%; control, -0.2% (90% confidence limits for pairwise differences, approximately +/- 1.4%). Over the first 3.75 m, the improvements were: slow, 7.1%; explosive, 3.2%; control, 1.4% ( approximately +/-2.6%). Over the last 7.5 m, the improvements were: slow, 2.1%; explosive, 3.0%; control, -0.8% ( approximately +/-1.9%). CONCLUSIONS: Slow weight training is likely to be more effective than explosive training for improving the acceleration phase of sprinting, when force is high throughout the length of the stroke. Explosive weight training may be more effective in speed maintenance, when forces are developed rapidly over a short period at the start of the stroke. What is the speed of performance of a javelin throw? SO.. What speed should you train at???? “Data… supports velocity specificity and demonstrate the importance of training at fast, moderate, and slow velocities to improve isokinetic force production across all testing velocities” Fundamentals of resistance training: progression and exercise prescription. Kraemer WJ, Ratamess NA. Med Sci Sports Exerc. 2004 Apr;36(4):674-88. But: Velocity specificity of training may apply mainly to people who are trained, and not for untrained people Kraemer, WJ and RU Newton. (2000). Training for muscular power. Phys Med Rehab Clin North Amer. 11(2): 341-368.
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Motor Control Section 2: Muscles fibers types and their use Unit 6b: Resistance training Kraemer, WJ and RU Newton. ( 2000 ). Training for muscular power. Phys Med Rehab Clin North Amer. 11(2): 341-368. Should we be training people for muscle strength or power? What researchers in the physical training of athletes and the elderly are saying: “In many sports activities , the ability to rapidly develop force is equally important or even more important than the maximal force itself”. Duchateau & Hainaut, Mechanism of muscle and motor unit adaptation to explosive power training. In: Strength and power in sport, 2nd ed. Paavo V. Komi (ed), Malden, MA: Blackwell Science, 2003 , pp 315- 330. “… in virtually all situations in sports and in daily activities an efficient means of activating muscles quickly, or of producing high impulses within given time periods is much more desirable [than basic MVC strength]…” Albert Gollhofer, Proprioceptive Training: Considerations for Strength and Power Productions. In: Strength and power in sport, 2nd ed. Paavo V. Komi (ed), Malden, MA: Blackwell Science, 2003 , pp 331-342.
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  • Fall '11
  • John Smith
  • The Land, Motor control, Gordon Chalmers

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