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Related Experiment Videos

Comparative effectiveness of accommodating and weight resistance training modes

F T O'Hagan1, D G Sale, J D MacDougall

  • 1Department of Kinesiology, McMaster University, Hamilton, ON, Canada.

Medicine and Science in Sports and Exercise
|August 1, 1995
PubMed
Summary

Both accommodating resistance device (ARD) and weight resistance device (WRD) training increase elbow flexor strength and muscle mass. However, WRD training may be more effective for increasing muscle mass.

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Area of Science:

  • Exercise Physiology
  • Muscle Physiology
  • Sports Science

Background:

  • Resistance training is crucial for enhancing muscular strength and hypertrophy.
  • Different resistance training devices and protocols may yield varying physiological adaptations.
  • Understanding the comparative efficacy of accommodating resistance devices (ARD) and weight resistance devices (WRD) is important for optimizing training programs.

Purpose of the Study:

  • To compare the effects of ARD training and WRD training on elbow flexor strength and muscle cross-sectional area (CSA).
  • To determine which training regimen, ARD or WRD, leads to greater improvements in strength and muscle mass.

Main Methods:

  • Twelve participants (6 men, 6 women) trained elbow flexors 3 days/week for 20 weeks.
  • One arm used ARD (3-5 sets of 10 maximal concentric actions).

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  • The contralateral arm used WRD (3-5 sets of 8-12 repetitions to volitional failure).

    • Main Results:

    • Both ARD and WRD training significantly increased maximal strength (1 RM) and elbow flexor muscle CSA (biceps, brachialis, total).
    • WRD training resulted in greater increases in 1 RM on the WRD and brachialis CSA compared to ARD training.
    • No significant changes were observed in biceps Type I and II fiber area for either training type.

    Conclusions:

    • Both ARD and WRD are effective training methods for increasing elbow flexor strength and muscle mass.
    • WRD training may offer superior benefits for muscle mass gains, particularly in the brachialis muscle.
    • Training intensity was higher with ARD, while training volume was higher with WRD, with equal session times.