The aim of this study is to determine whether the distribution of internal load predicts the distribution of muscle hypertrophy among hamstring heads after a 10-week resistance exercise program. The hypothesis is that the distribution of internal muscle load among the hamstring is related to the distribution of muscle hypertrophy.
It is well accepted that muscle stress (mechanical and/or metabolic) is the major way to induce muscle hypertrophy. While this link between muscle stress and hypertrophy is pivotal is sport training, prevention and rehabilitation, it remains poorly understood. To date, the only indirect evidence of relationship of muscle stress and muscle hypertrophy is the similar patterns (from independent studies) between muscle damage and hypertrophy within quadriceps (i.e., rectus femoris (RF) \> vastus (VL) = vastus medialis VM), hamstring, and triceps surae. However, muscle damage is an indirect proof of muscle mechanical stress. With the quantification of internal muscle load, it is interesting to determine whether the muscle that receives the larger stress exhibits the larger hypertrophy.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
BASIC_SCIENCE
Masking
DOUBLE
Enrollment
36
Strength training, three times a week, during nine weeks.
Muscle volume
Hypertrophy
Time frame: 10 weeks
Internal training load
Magnitude and onset/offset of muscle activation
Time frame: 10 weeks
Maximal strength Nordic
Maximal strength during the Nordic exercise
Time frame: 10 weeks
Maximal strength Deadlift
Maximal strength during the Deadlift exercise
Time frame: 10 weeks
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