Document Detail

Increased active hamstring stiffness after exercise in women with a history of low back pain.
MedLine Citation:
PMID:  23404910     Owner:  NLM     Status:  In-Data-Review    
OBJECTIVE: To compare active hamstring stiffness in female subjects with and without a history of low back pain (LBP) after a standardized 20-min aerobic-exercise session.
DESIGN: Case control.
SETTING: Laboratory.
PARTICIPANTS: 12 women with a history of recurrent episodes of LBP (age = 22.4 ± 2.1 y, mass = 67.1 ± 11.8 kg, height = 167.9 ± 8 cm) and 12 matched healthy women (age = 21.7 ± 1.7 y, mass = 61.4 ± 8.8 kg, height = 165.6 ± 7.3 cm). LBP subjects reported an average 6.5 ± 4.7 on the Oswestry Disability Index.
INTERVENTIONS: Participants walked at a self-selected speed (minimum 3.0 miles/h) for 20 min. The treadmill incline was raised 1% grade per minute for the first 15 min. During the last 5 min, participants adjusted the incline of the treadmill so they would maintain a moderate level of perceived exertion through the end of the exercise protocol.
MAIN OUTCOME MEASURES: During session 1, active hamstring stiffness, hamstring and quadriceps isometric strength, and concurrently collected electromyographic activity were recorded before and immediately after the exercise protocol. For session 2, subjects returned 48-72 h after exercise for repeat measure of active hamstring stiffness.
RESULTS: Hamstring active stiffness (Nm/rad) taken immediately postexercise was not significantly different between groups. However, individuals with a history of recurrent LBP episodes presented significantly increased hamstring stiffness 48-72 h postexercise compared with controls. For other outcomes, there was no group difference.
CONCLUSIONS: Women with a history of recurrent LBP episodes presented greater active hamstring stiffness 48-72 h after aerobic exercise.
Rebecca J Bedard; Kyung-Min Kim; Terry L Grindstaff; Joseph M Hart
Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Journal of sport rehabilitation     Volume:  22     ISSN:  1543-3072     ISO Abbreviation:  J Sport Rehabil     Publication Date:  2013 Feb 
Date Detail:
Created Date:  2013-02-13     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9206500     Medline TA:  J Sport Rehabil     Country:  United States    
Other Details:
Languages:  eng     Pagination:  47-52     Citation Subset:  IM    
Ithaca College, Ithaca, NY.
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