The aim of the research project is to investigate the influence of resistance-training prescription (repetition duration, time under tension and training volume) and sex have on morpho-functional adaptations of upper and lower-body skeletal muscles. Twenty-four male and female university students were randomly assigned to one of two experimental groups, based on the repetition duration : "fast" group (with 1 second for eccentric and concentric phase) and "slow" group with prolonged duration of eccentric contraction (4 seconds for eccentric and 1 second concentric phase). At baseline and final measurement, cross-section area, one-repetition maximum and tensiomyography parameters (contraction time - Tc and radial displacement - Dm) of elbow flexors (biceps brachii) and knee extensors (4 quadriceps muscles) were evaluated.
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muscle hypertrophy
Timeframe: 7 weeks
muscle strength changes
Timeframe: 7 weeks
contractile properties changes
Timeframe: 7 weeks