Related Experiment Videos
Electromyographic and girth considerations relative to strength training
Perceptual and Motor Skills
|February 1, 1977
Summary
Men and women improved quadriceps strength after a 7-week program. Men showed increased thigh girth and greater muscle activation changes with heavier loads compared to women.
Area of Science:
- Exercise Physiology
- Biomechanical Analysis
- Human Performance
Background:
- Quadriceps strength is crucial for mobility and athletic performance.
- Understanding sex-based differences in muscle adaptation to training is important for tailored exercise prescriptions.
Purpose of the Study:
- To investigate the effects of a 7-week strength improvement program on quadriceps strength, muscle activation, and anthropometric measures in men and women.
- To compare the adaptive responses between male and female participants.
Main Methods:
- Surface electromyography (EMG) was used to measure muscle activation.
- Quadriceps strength was assessed using a cable tensiometer.
- Thigh girth and skinfold measures were recorded.
- Participants completed a 7-week strength improvement program.
Main Results:
- Both male and female participants significantly increased quadriceps strength.
- Men exhibited a significant increase in thigh girth, while women did not.
- Both groups showed significant EMG changes with a 16-lb load.
- Only men demonstrated significant EMG changes with a 26-lb load.
Conclusions:
- A 7-week strength program effectively enhances quadriceps strength in both sexes.
- Men may experience greater hypertrophic and neuromuscular adaptations to strength training compared to women, particularly with heavier loads.