Journal
JOURNAL OF MOTOR BEHAVIOR
Volume 37, Issue 2, Pages 111-125Publisher
ROUTLEDGE JOURNALS, TAYLOR & FRANCIS LTD
DOI: 10.3200/JMBR.37.2.111-126
Keywords
ACL; quadriceps; coactivation; hop; jump
Funding
- NIAMS NIH HHS [R01 AR046111-03] Funding Source: Medline
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The authors compared leg stiffness (K-VERT), muscle activation, and joint movement patterns between 11 men and 10 women during hopping. Physically active and healthy men and women performed continuous 2-legged hopping at their preferred rate and at 3.0 Hz. Compared with men, women demonstrated decreased K-VERT; however, after the authors normalized for body mass, gender differences in K-VERT were eliminated. In comparison with men, women also demonstrated increased quadriceps and soleus activity, as well as greater quadriceps-to-hamstrings coactivation ratios. There were no significant gender differences for joint movement patterns (p > .05). The relationship between the observed gender differences in muscle recruitment and the increased risk of anterior cruciate ligament injury in women requires further study.
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