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Updated: Mar 30, 2026
In Vivo Quantification of Hip Arthrokinematics during Dynamic Weight-bearing Activities using Dual Fluoroscopy
Published on: July 2, 2021
Activation of the hip adductor muscles varies during a simulated weight-bearing task
Julie A Hides1, Paula Beall2, Melinda M Franettovich Smith1
1Centre for Musculoskeletal Research, Mary Mackillop Institute for Health Research, Australian Catholic University, Brisbane 4102, Australia.
Objective:
To investigate the pattern of muscle activation of the individual hip adductor muscles using a standardised simulated unilateral weight-bearing task.
Design:
A repeated measures design.
Setting:
Laboratory.
Participants:
20 healthy individuals (11 females, 9 males) participated in the study. Age ranged from 20 to 25 years.
Main Outcome Measurements:
Surface electromyography recordings from adductor magnus and adductor longus muscles were taken at levels representing 10-50% of body weight during a simulated weight-bearing task. Electromyography (EMG) data were normalised to maximal voluntary isometric contraction.
Results:
The adductor magnus was recruited at significantly higher levels than the adductor longus muscle during a simulated weight-bearing task performed across 10-50% of body weight (p < 0.01).
Conclusions:
Adductor magnus and adductor longus muscles are recruited to different extents during a simulated weight-bearing task. This information should be considered when selecting exercises for management and prevention of groin strains. Closed chain exercises with weight-bearing through the lower limb are more likely to recruit the adductor magnus muscle over the adductor longus muscle.
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