Skip Navigation LinksHome > March 2012 - Volume 26 - Issue 3 > A 10-Week Stretching Program Increases Strength in the Contr...
Journal of Strength & Conditioning Research:
doi: 10.1519/JSC.0b013e3182281b41

A 10-Week Stretching Program Increases Strength in the Contralateral Muscle

Nelson, Arnold G1; Kokkonen, Joke2; Winchester, Jason B3; Kalani, Walter2; Peterson, Karen2; Kenly, Michael S2; Arnall, David A4

Collapse Box


Nelson, AG, Kokkonen, J, Winchester, JB, Kalani, W, Peterson, K, Kenly, MS, and Arnall, DA. A 10-week stretching program increases strength in the contralateral muscle. J Strength Cond Res 26(3): 832–836, 2012—It was questioned whether a unilateral stretching program would induce a crosstraining effect in the contralateral muscle. To test this, 13 untrained individuals participated in a 10-week stretching program while 12 other untrained individuals served as a control group. For the experimental group, the right calf muscle was stretched 4 times for 30 seconds, with a 30-second rest between stretches, 3 d·wk−1 for 10 weeks. Strength, determined via 1 repetition maximum (1RM) unilateral standing toe raise, and range of motion (ROM) were measured pre-post. In the treatment group, the stretched calf muscle had a significant (p < 0.05) 8% increase in ROM, whereas the nonstretched calf muscle had a significant 1% decrease in ROM. The 1 RM of the stretched calf muscle significantly increased 29%, whereas the 1RM of the nonstretched calf muscle significantly increased 11%. In the control group, neither 1RM nor ROM changed for either leg. The results indicate that 10 weeks of stretching only the right calf will significantly increase the strength of both calves. Hence, chronic stretching can also induce a crosstraining effect for strength but not for the ROM. This study also validates earlier findings suggesting that stretching can elicit strength gains in untrained individuals.

© 2012 National Strength and Conditioning Association



Article Tools


Article Level Metrics

Search for Similar Articles
You may search for similar articles that contain these same keywords or you may modify the keyword list to augment your search.