Tweet
This topic has often been discussed: for injury prevention what is the ideal ratio for quads and hamstrings?
Obviously there is the Force-posture relationship that one has to take into account. Testing in a seated, 90 deg hip flexion posture, could give a different peak torque value compared to testing in standing, hip extension posture.
The book Facts and Fallacies of Fitness (Siff) touches on the fact that some Soviet researchers found that for running the “ideal” ratio should be more like 50:50, rather than the traditionally accepted 60:40.
I have been thinking of this concept but do not have the expertise to answer the following questions adequately:
1) How relevant is this ratio (either for injury prevention or performance enhancement) since, in running, the function of the hamstrings seems to be to decelerate hip flexion rather than to oppose knee extension?
2) How often do the quadriceps and Hamstrings oppose each other in sporting conexts?
3) Surely a hip flexor : hamstring ratio would be more appropriate?
4) In what sporting context would knee flexion, caused by the hamstrings, be an important precursor to success? (Tucking in diving and gymnastics?)
Regards,
Grant Jenkins
Strength and Rehabilitation Consultant
B.Sc. (Hons) Ex. Sci.
M.A.A.E.S.S., M.A.S.C.A.
PHYSIOKINETICS
Gold Coast, Australia
(+61) 409 625 263
NOTE
1. The contents of this email and any attachments are confidential and privileged. Any unauthorised use of the contents is expressly prohibited. If
you receive this email in error, please contact the sender and then delete the email.
2. Before opening or using any attachments, please check them for viruses and defects. The sender does not accept any liability for any damage caused by such viruses and/or defects. Please notify the sender of any virus and/or
defect should you discover same.
3. This email is also subject to copyright. No part of it should be reproduced, adapted or communicated without the written consent of the
copyright owner. Any personal information in this email must be handled in accordance with the Privacy Act 1988 (Cth).
--
__________________________________________________ _________
Sign-up for Ads Free at Mail.com
http://promo.mail.com/adsfreejump.htm
-----------------------------------------------------------------
To unsubscribe send SIGNOFF BIOMCH-L to LISTSERV@nic.surfnet.nl
For information and archives: http://isb.ri.ccf.org/biomch-l
-----------------------------------------------------------------
Obviously there is the Force-posture relationship that one has to take into account. Testing in a seated, 90 deg hip flexion posture, could give a different peak torque value compared to testing in standing, hip extension posture.
The book Facts and Fallacies of Fitness (Siff) touches on the fact that some Soviet researchers found that for running the “ideal” ratio should be more like 50:50, rather than the traditionally accepted 60:40.
I have been thinking of this concept but do not have the expertise to answer the following questions adequately:
1) How relevant is this ratio (either for injury prevention or performance enhancement) since, in running, the function of the hamstrings seems to be to decelerate hip flexion rather than to oppose knee extension?
2) How often do the quadriceps and Hamstrings oppose each other in sporting conexts?
3) Surely a hip flexor : hamstring ratio would be more appropriate?
4) In what sporting context would knee flexion, caused by the hamstrings, be an important precursor to success? (Tucking in diving and gymnastics?)
Regards,
Grant Jenkins
Strength and Rehabilitation Consultant
B.Sc. (Hons) Ex. Sci.
M.A.A.E.S.S., M.A.S.C.A.
PHYSIOKINETICS
Gold Coast, Australia
(+61) 409 625 263
NOTE
1. The contents of this email and any attachments are confidential and privileged. Any unauthorised use of the contents is expressly prohibited. If
you receive this email in error, please contact the sender and then delete the email.
2. Before opening or using any attachments, please check them for viruses and defects. The sender does not accept any liability for any damage caused by such viruses and/or defects. Please notify the sender of any virus and/or
defect should you discover same.
3. This email is also subject to copyright. No part of it should be reproduced, adapted or communicated without the written consent of the
copyright owner. Any personal information in this email must be handled in accordance with the Privacy Act 1988 (Cth).
--
__________________________________________________ _________
Sign-up for Ads Free at Mail.com
http://promo.mail.com/adsfreejump.htm
-----------------------------------------------------------------
To unsubscribe send SIGNOFF BIOMCH-L to LISTSERV@nic.surfnet.nl
For information and archives: http://isb.ri.ccf.org/biomch-l
-----------------------------------------------------------------