Definition: "An ergogenic aid is any substance or phenomenon that enhances performance "
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11.04.2017 |
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Strength training results in more muscle growth when combined with heat treatment
Study
The researchers divided almost two dozen women aged 65-75 into three groups.
One group put a heating sheet - manufactured by the Kao Corporation - on their upper legs three times a week for eight consecutive hours during the 12 weeks that the experiment lasted. [HEAT] This caused the temperature of the upper leg muscles to rise from 35 to 39 degrees Celsius.
The study was not financed by Kao, by the way, but by the South Korean government.
Another group trained their upper leg muscles on a leg extension machine three times a week [RT], doing light training: the women did 3 sets with 40 percent of the weight at which they could just manage 1 rep. [1-RM]
A third group combined strength training and the heat treatment. [HRT]
Results
The concentration of growth hormone and IGF-1 in the blood of all three groups increased significantly, but only the participants who had combined both treatments built up significantly more muscle mass.
Conclusion
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