Comparison of Architectural and Performance Adaptations of Hip Extension Exercise Under Gravitational or Inertial Loading Conditions

Comparison of Architectural and Performance Adaptations of Hip Extension Exercise Under Gravitational or Inertial Loading Conditions

The main objective of this study is to investigate training-induced adaptations in Biceps femoris long head (BFlh) architecture and performance measures such as muscle strength, jumping, and power variables after following 6 weeks of resistance training program with gravitational or inertial hip extension (HE) exercise and a subsequent detraining period, comparing those adaptations with a control group. In addition, this study aims to determine the time course of BFlh architectural adaptations throughout a 6-week training intervention.

Inclusion Criteria:

• at least two years of resistance training experience
• not have any injury, disease or pain that could reduce their maximal effort

Exclusion Criteria:

• history of injury to the lower limbs (including the hamstrings), wrist, or back in the past 18 months