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16.11.2016


Your calf muscles won't grow? It's not your fault...

Most men and women who do weight training complain that they can't get their calf muscles to grow. It's not just their imagination, American sports scientists reported in the late eighties in Physical Therapy. The researchers got their subjects to train their calf muscles well for eight weeks, and observed that their efforts had no effect on the size of the calf muscle.

Study
The researchers got a dozen men and a dozen women to train their calf muscles on a machine like the one shown below, three times a week for eight weeks.


Your calf muscles won't grow? It's not your fault...



The subjects trained using a weight with which they could just manage 9-13 reps. Each training session consisted of four sets.

The subjects in the control group did no training.

The researchers measured the strength of the subjects' calf muscles before and after the training period. They measured the circumference of the calf muscles using a scan.

Results
The subjects who had trained their calf muscles gained strength. The men built up slightly more strength than the women did, but the difference was not statistically significant.


Your calf muscles won't grow? It's not your fault...



The calf circumference did not increase as a result of the training. On the scans the researchers were able to see that the training had led to an increase of one millimetre in the triceps surae calf muscle of both the men and the women. This effect was not statistically significant either.

Conclusion
"Eight weeks of heavy-resistance training involving the triceps surae muscles elicits similar significant increases in isotonic muscle strength in both men and women without concurrent increases in muscularity", the researchers wrote.

Source:
Phys Ther. 1988 Feb;68(2):208-13.

More:
A slightly better - yet silly looking - way to train your calf muscles 08.04.2015
Weakened soleus causes older women to fall 22.10.2013
Fancy footwork gives calves a better workout 15.03.2011

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