Changes in the Load-Velocity Profile Following Power- and Strength-Oriented Resistance-Training Programs.
Power-oriented resistance training significantly improved velocity across various loads for squat and bench press exercises more than strength training. This 4-week program effectively modified load-velocity profiles in physically active men.
Area of Science:
- Exercise Physiology
- Biomechanics
- Sports Science
Background:
- Individualized load-velocity profiles (LVP) are crucial for optimizing resistance training.
- Understanding the differential effects of training modalities on LVP is essential for program design.
Purpose of the Study:
- To compare the short-term effects of power- versus strength-oriented resistance training on individualized load-velocity profiles.
- To assess changes in the squat (SQ) and bench press (BP) exercises.
Main Methods:
- Thirty physically active men were randomized into power or strength training groups for 4 weeks.
- Training involved specific exercises, set/rep schemes, and loads (40% 1RM for power, 70-90% 1RM for strength).
- Individualized load-velocity profiles (velocity at 30-90% 1RM) were assessed pre- and post-training via incremental loading tests.
Main Results:
- The power-training group showed moderate increases in velocity across the load spectrum for SQ and at 30% 1RM for BP (ES: 0.67-0.93).
- The strength-training group exhibited trivial to small changes in LVP for both SQ and BP (ES: -0.33 to 0.35).
- Power training resulted in significantly greater increases in mean velocity across all % 1RM compared to strength training for both SQ and BP (ES: 0.25-0.63).
Conclusions:
- A 4-week resistance-training program can modify individualized load-velocity profiles.
- Power-oriented training is more effective than strength-oriented training in enhancing the velocity characteristics of the load-velocity spectrum for both lower-body and upper-body exercises.
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