30 Seconds Summary
A Guide to Detraining: How to Mitigate Losses and Get Back to Full Strength

  • Detraining does not significantly affect maximal strength for up to 28 days but accelerates losses thereafter, with older adults experiencing faster declines.
  • Maximal power and strength endurance are also reduced with detraining, with older adults experiencing greater losses than younger adults.
  • Muscle mass generally begins to decrease after 20 days of detraining, but muscle fiber cross-sectional area may be preserved.
  • Muscle memory allows previously trained individuals to regain muscle and strength faster than it was originally built, potentially due to retained myonuclei.
  • To mitigate strength and muscle losses during detraining, continue some form of resistance training, even at a reduced volume.
  • Upon returning to training, start with lighter weights and gradually increase the load to minimize injury risk and recondition muscles.
  • The retraining period, where lost muscle and strength are regained, is generally about half as long as the detraining period.

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