| Autor: |
Siatras T, Mameletzi D, Kellis S |
| Zdroj: |
Pediatric Exercise Science; Feb2004, Vol. 16 Issue 1, p37-43, 7p |
| Abstrakt: |
The purpose of the study was to determine young male gymnasts' and swimmers' knee flexor:extensor (F:E) ratios during isokinetic testing at different velocities. Nine gymnasts (10.3 +/- 0.5 years) and 14 swimmers (10.5 +/- 0.5 years) participated. Concentric isokinetic peak torque was measured by a CYBERN Norm dynamometer at different angular velocities (60,120, and 180 degrees/s) during unilateral knee extensions and flexions after gravity correction. Significant differences were found only in gymnasts' knee F:E peak-torque ratios between the angular velocities of 60 and 120 degrees/s (p < .01), as well as 60 and 180 degrees/s (p < .01), whereas swimmers' ratios were unchanged. Gymnasts presented significantly higher F:E ratios than swimmers did at the angular velocities of 120 degrees/s (p < .01) and 180 degrees/s (p < .001). The reciprocal ratios provided some indication that the training context of young athletes can influence the balance between agonistic and antagonistic activity of the lower limbs' major muscle groups.[ [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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