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ADAPTATIONS OF STRENGTH TRAINING A2 Physical Education OCR

A LEVEL PHYSICAL EDUCATION OCR
by

Dan Greaves

on 1 December 2015

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Transcript of ADAPTATIONS OF STRENGTH TRAINING A2 Physical Education OCR

ADAPTATIONS OF STRENGTH TRAINING NEURAL ADAPTATIONS PHYSIOLOGICAL ADAPTATIONS Increased recruitment of additional fast twitch muscle fibres
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
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