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J Strength Cond Res. 2015 Nov;29(11):3245-52. doi: 10.1519/JSC.0000000000001127.

Cold Vs. Heat After Exercise-Is There a Clear Winner for Muscle Soreness.

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1Department of Physical Therapy, Loma Linda University, Loma Linda, California; 2Touro University, Henrdsen, Nevada; 3Department of Physical Therapy, College of Health Science, Gachon University, Yeonsu-gu, Incehon; and 4School of Physical Therapy, Touro University, Henrdsen, Nevada.


Because of the differences in the exercise type, temperature, and timing of the use of cold and heat after exercise in different studies, there is no clear conclusion as to the efficacy of either modality on reducing delayed onset muscle soreness. One hundred subjects at similar fitness levels were examined. They accomplished leg squats for 15 minutes and heat and cold were applied after or 24 hours after exercise using ThermaCare heat or cold wraps. Measurements obtained were strength, the force to passively move the knee, analog visual pain scales, and blood myoglobin. Control subjects lost 24% strength after exercise. Subjects with heat or cold just after exercise only lost 4% strength (p < 0.01). For strength recovery, cold applied after 24 hours was better than heat at 24 hours. Heat or cold applied after exercise was significantly better to prevent elastic tissue damage (p < 0.01), whereas heat and cold immediately after exercise caused no loss in muscle myoglobin and heat or cold after 24 hours showed no less muscle damage from myoglobin than in control subjects. Myoglobin in the control and heat and cold 24-hour groups averaged 135.1% of the baseline data but averaged 106.1% of baseline in the immediate heat and cold groups. For reducing pain, control subjects showed a significant amount of pain the days after exercise. But cold immediately after exercise or 24 hours later was superior to heat in reducing pain. In conclusion, both cold and heat appear to be efficacious in reducing muscle damage after exercise.

[Indexed for MEDLINE]

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