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ADAPTATIONS OF STRENGTH TRAINING A2 Physical Education OCR
Transcript of ADAPTATIONS OF STRENGTH TRAINING A2 Physical Education OCR
Increased recruitment of motor units
Improved co-ordination and simultaneous stimulation of motor units
Reduction in proprioreceptor / antagonist muscle inhibition allowing antagonist to stretch further and agonist to contract with more force Hypertrophy - increase in muscle size (predominantly in fast twitch muscle fibres) and or hyperplasmia - increase in muscle fibre numbers
Increased number/size of contractile protein (width of actin/myosin filaments)
Increased actin and myosin cross bridges Metabolic Skeletal Muscle Increase in ATP,PC and glycogen stores
Increased buffering capacity/tolerance of fast twitch fibres to high levels of lactic acid
Increased efficiency to remove lactic acid (Cori cycle)
Increased glcolytic enzyme actions, glycogen phosphorylase and PFK
Net effect: Increased anaerobic threshold/ capacity and recovery of ATP/PC/LA system
Increased intensity/duration of performance and delayed OBLA/fatigue Other adaptations Increased strength of connective tissue - tendons, ligaments and bones (increased calcium production), which helps offset early symptoms of osteoporosis
Social/Psychological: hypertrophy of muscles can be seen as attractive improving self esteem and social standing