Kinesiology 2241A/B Midterm: Midterm 1 -Biomechanics 5
15 Jan 2018
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People with a high so composition tend to have the best endurance. All muscle fibers within a motor unit are the same type, but throughout a muscle, all muscle types exist: number of units stimulated: Force increases as the number of motor units being stimulated increases. The order of recruitment of fibers: so fog fg. When someone is emotional (ex: angry), they are able to recruit an abnormally high amount of fibers - smaller motor neurons innervate slow oxidative fibers. Larger motor neurons innervate the fast twitch fibers. Strength training = greater cross-sectional area (hypertrophy) mainly of ft, doesn"t create more fibers: frequency of firing: As the frequency of nerve stimuli increases, the muscular tension also increases. However, the highest level of force is achieved in long muscles with lower levels of firing frequency - shorter muscles need higher nerve frequencies. If the motor unit contractions are synchronized, further tension also develops: muscle temperature:
