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Strength/power augmentation subsequent to short-term training abstinence.

Lawrence W Weiss1, Larry E Wood, Andrew C Fry

  • 1Musculoskeletal Dynamics Laboratory, Department of Health and Sport Sciences, University of Memphis, Memphis, TN 38152-3480. lweiss@memphis.edu

Journal of Strength and Conditioning Research
|December 3, 2004
PubMed
Summary

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Resistance-trained men may experience modest strength gains after 2-4 days of detraining. This transient strength augmentation was observed in aggregate muscle actions, particularly at slower movement velocities, suggesting a temporary enhancement in performance.

Area of Science:

  • Exercise Physiology
  • Sports Science
  • Human Performance

Background:

  • Previous research indicated strength gains after detraining in isolated muscle actions.
  • The effects of training abstinence on strength in aggregate muscle actions remained unclear.
  • This study investigated strength changes in major muscle groups after varied rest periods.

Purpose of the Study:

  • To determine if strength augmentation occurs in aggregate muscle actions following short periods of training cessation.
  • To examine the influence of 2, 3, 4, and 5 days of training abstinence on strength performance.
  • To compare strength changes across different testing velocities and measures.

Main Methods:

  • Twenty-five resistance-trained men participated in the study.

Related Experiment Videos

  • Participants performed maximal strength tests (1 repetition maximum) before a detraining period.
  • Subjects were randomly assigned to detraining intervals of 2, 3, 4, or 5 days without intervening training.
  • Strength was assessed using isokinetic and dynamic constant external resistance (DCER) bench press tests.

    • Main Results:

    • No significant differences in strength were found between groups after detraining.
    • A small effect size for strength augmentation was observed in the 4-day detraining group for peak force and power at slow velocities.
    • Modest strength increases were also noted in the 2-day group for relative peak force and DCER strength at slow velocities.

    Conclusions:

    • Transient strength augmentation may occur in aggregate muscle actions after 2-4 days of training abstinence in resistance-trained men.
    • This effect appears to be more pronounced at slower movement velocities.
    • Short-term detraining can lead to temporary, modest improvements in specific strength measures.