Weight and plyometric training: effects on eccentric and concentric force production

Area of Science:

• Sports Science
• Exercise Physiology
• Biomechanics

Background:

• Understanding training adaptations is crucial for optimizing athletic performance.
• Plyometric and weight training elicit distinct physiological responses.
• Previous research has explored their individual effects, but direct comparisons of specific adaptations are ongoing.

Purpose of the Study:

• To investigate and compare the specific adaptations induced by plyometric training versus weight training.
• To determine the effects of these training modalities on concentric and eccentric force production.
• To provide insights into enhancing training-induced adaptations for athletes.

Main Methods:

• Forty-one trained males were divided into control, plyometric, or weight-training groups.
• Experimental groups trained for 8 weeks, focusing on dynamic plyometrics or heavy lifts.
• Pre- and post-training assessments included vertical jump, isoinertial tests, push-ups, and maximal strength lifts (bench press, squat).

Main Results:

• Plyometric training significantly enhanced eccentric lower body force production rate.
• Weight training primarily improved concentric muscle function.
• Both training groups showed distinct adaptations tailored to their specific exercise protocols.

Conclusions:

• Plyometric and weight training induce specific and divergent adaptations in muscle function.
• Eccentric force production is preferentially enhanced by plyometric training.
• Concentric force production is primarily augmented by weight training, offering targeted approaches for performance enhancement.