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Related Experiment Videos

Strength training early after myocardial infarction

W D Daub1, G P Knapik, W R Black

  • 1Northern Alberta Cardiac Rehabilitation Program, Glenrose Rehabilitation Hospital, Edmonton.

Journal of Cardiopulmonary Rehabilitation
|March 1, 1996
PubMed
Summary

Early strength training after myocardial infarction effectively increases muscular strength. This low-to-moderate intensity exercise may also be safer than aerobic exercise for cardiac rehabilitation patients.

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Area of Science:

  • Cardiology
  • Exercise Physiology
  • Rehabilitation Medicine

Background:

  • Daily activities require muscular strength, but current guidelines limit strength training for myocardial infarction (MI) patients in cardiac rehab.
  • This study investigates early, low-to-moderate intensity strength training for post-MI patients.

Purpose of the Study:

  • To determine the effectiveness and safety of early low-to-moderate intensity strength training in patients post-myocardial infarction.

Main Methods:

  • 57 low-risk men (6-16 weeks post-MI) were randomized into a control group or one of three strength training groups (20%, 40%, or 60% of 1 RM) for 10 weeks.
  • All groups performed aerobic training 3x/week for 12 weeks; strength groups added resistance exercises.

Main Results:

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  • Maximal strength increased significantly in all strength training groups (+10.5% to +13.5%) compared to the control group ( +0.5%).
  • Cardiovascular complications were significantly lower during strength training (1/42 subjects) compared to aerobic exercise (30/42 subjects).

Conclusions:

  • Low-to-moderate intensity strength training is effective for increasing strength in selected early post-MI patients.
  • Early strength training may offer a safer alternative to aerobic exercise regarding cardiovascular complications during cardiac rehabilitation.