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Date Created: 10/08/15
KIN 365 91415 Flexibility Muscle can stretch through a small or large of motion Dependent on the joint Ie Just bc exible at hip does not mean exible at hamstring Strength The component of muscle force that produces torque at the joint Measured as a function of the collection forcegenerating capability of a given functional muscle group Ie Maximal force can produce at one period of time with one muscle or muscle group Measured w1 rep max one repetition at maximal weight Factors that affect strength 4 1 Training state of that muscle Neuromuscular adaptation the improved innervation of the trained muscle includes 0 Increased neuronal ring rates 0 Increased excitability 0 Increased levels of motor output from the CNS more action potentials sent through efferent pathways 2 Muscle crosssectional area a Relates to tensiongenerating capabilities of muscle b Occurs beyond rst 12 weeks of strength training c Increase of size of muscle ber hypertrophy 3 Force arm a Distance bw muscle attachment to bone amp joint center 4 Angle of muscle attachment to bone Atroph y shrinking of the muscle bers Hyperpasia increase in the of muscle bers Endurance The ability of the muscle to exert tension over time The longer the tension is exerted the greater the endurance Ie repeated submaximaI force development Measured over time or by the number of reps can do at certain submaximal amount of force Lighter weight more reps endurance training Heavy weight less reps strength training Endurance training does NOT increase muscle ber diameter as training for strength does May be why this is the preferred method of training for females as they don39t want to quotbulk upquot Power Factors that affect power Muscular strength force production at muscle Movement speed velocity Important for anaerobic activities that require explosive movements such as Olympic weight lifting throwing jumping sprinting Therefore FT muscle bers are an asset for individuals training for power Power The rate at which work is performed The product of muscular FORCE amp the VELOCITY of muscle shortening The rate of force or torque production at a joint Muscle power work or force velocity work velocity Can also describe power as how long it takes to develop force e lf develop a great deal of force in a short amount of time large amount of power Musce power force production per unit time How quickly cyou generate a lot of force Two important factors Force of contraction Velocity of movement time Power force velocity P fV