J Orthop Sports Phys Ther December 2001 PMID 11767248

Influence of joint position on electromyographic and torque generation during maximal voluntary isometric contractions of the hamstrings and gluteus maximus muscles.

T W Worrell, G Karst, D Adamczyk, R Moore, C Stanley, B Steimel, S Steimel

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AI synopsis

What people are saying

Discussions reflect a balanced interest, with comments that highlight how the findings could influence approaches to muscle training and rehabilitation, such as mentions of the variability in muscle response based on joint position and calls for further research, employing a tone of curiosity and professional curiosity.

AgreementModerate agreement

Most discussions recognize the importance of joint positioning on muscle activation, with comments like 'this changes how we think about rehab' indicating general support.

InterestModerate interest

Participants show a moderate level of curiosity about the subject, as seen in statements like 'interesting findings' and 'worth further exploration.'

EngagementModerate engagement

Comments often reference the methodology and potential practical applications, suggesting they are thoughtfully considering the research implications.

ImpactNeutral impact

While the discussions acknowledge some significance, many focus on the research's relevance rather than immediate real-world impact.

Abstract in brief

  • The study examined how joint angles affect muscle activation (EMG) and force output (torque) during maximal voluntary isometric contractions of the hamstrings and gluteus maximus, revealing that both EMG and torque vary significantly with different joint positions.
  • Researchers normalized EMG and torque data to each subject’s maximum value to accurately compare muscle activity across different joint angles, finding that maximal EMG responses are influenced by limb positioning.
  • Results showed consistent patterns with previous research but also highlighted notable individual differences, especially in muscle activation levels at specific joint angles, emphasizing the importance of considering joint position when analyzing muscle function.

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https://doi.org/10.2519/jospt.2001.31.12.730 14. Kang, S. Y., Jeon, H. S., Kwon, O., Cynn, H. S., & Choi, B. (2013). Acti- vation of the gluteus maximus and ...

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and gluteus maximus muscles. J Orthop Sports Phys Ther, 2001. 31(12): p. 730-40. 10.2519/jospt.2001.31.12.730. 15.

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