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Related Experiment Videos

Interaction between concurrent strength and endurance training.

D G Sale1, J D MacDougall, I Jacobs

  • 1Department of Physical Education, McMaster University, Hamilton, Ontario, Canada.

Journal of Applied Physiology (Bethesda, Md. : 1985)
|January 1, 1990
PubMed
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Concurrent strength and endurance training effectively promotes both strength and endurance development without interference. Adding a weaker training stimulus to a stronger one showed additive benefits, but not vice versa.

Area of Science:

  • Exercise Physiology
  • Sports Science
  • Human Performance

Background:

  • Concurrent training, combining strength and endurance exercises, is a popular method for improving physical fitness.
  • Understanding the specific effects of concurrent training on distinct physiological adaptations is crucial for optimizing training programs.
  • Previous research has yielded mixed results regarding potential interference between strength and endurance stimuli.

Purpose of the Study:

  • To investigate the effects of concurrent strength and endurance training on the development of both strength and endurance capabilities.
  • To compare the adaptations resulting from combined strength and endurance training versus isolated training modalities.
  • To determine if adding a weaker training stimulus to a stronger one, or vice versa, influences the overall adaptive response.

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Main Methods:

  • Two groups of participants (men and women) underwent 22 weeks of training, 3 days/week.
  • One group performed concurrent strength and endurance (S+E) training on one leg and strength (S) training on the other.
  • The second group performed concurrent endurance and strength (E+S) training on one leg and endurance (E) training on the other. Adaptations were assessed via muscle biopsies, VO2 max, and strength tests.

Main Results:

  • Both S and S+E training improved endurance measures like VO2 max and citrate synthase activity, with S+E showing greater increases in some aspects.
  • Both E and E+S training enhanced muscle size (knee extensor area, thigh girth) and strength (leg press 1 RM), with E+S demonstrating greater gains in some strength parameters.
  • Concurrent training did not impede strength or endurance development compared to isolated training, and additive effects were observed when a weaker stimulus was added to a stronger one.

Conclusions:

  • Concurrent strength and endurance training is effective for improving both strength and endurance without negative interference.
  • Adding a weaker training stimulus to a stronger one can lead to additive adaptations.
  • The findings suggest that concurrent training programs can be designed to maximize benefits across different fitness components.