Document Detail


Influence of stretching and warm-up on achilles tendon material properties.
MedLine Citation:
PMID:  21733444     Owner:  NLM     Status:  In-Data-Review    
Abstract/OtherAbstract:
BACKGROUND: Controversy exists on stretching and warm-up in injury prevention. We hypothesized that warm up has a greater effect on Achilles tendon biomechanics than static stretching. This study investigated static stretching and warm-up on Achilles tendon biomechanics in recreational athletes, in vivo.
MATERIALS AND METHODS: Ten active, healthy subjects, 5 males, 5 females, With a mean age of 22.9 years with no previous Achilles tendon injuries were recruited. Typical stretching and warm-up routines were created. Testing was performed in a randomized cross-over design. A custom-built dynamometer was utilized to perform controlled isometric plantarflexion. A low profile ultrasound probe was utilized to visualize the musculotendinous junction of the medial gastrocnemius. An eight-camera motion capture system was used to capture ankle motion. Custom software calculated Achilles tendon biomechanics.
RESULTS: Achilles tendon force production was consistent. No statistically significant differences were detected in stretch, stiffness, and strain between pre-, post-stretching, and post-warm-up interventions.
CONCLUSION: Stretching or warm-up alone, and combined did not demonstrate statistically significant differences. Stretching and warm-up may have an equivalent effect on Achilles tendon biomechanics. Prolonged and more intense protocols may be required for changes to occur.
CLINICAL RELEVANCE: Stretching and warm-up of the Achilles before exercise are commonly practiced. Investigating the effect of stretching and warm-up may shed light on potential injury prevention.
Authors:
Don Young Park; Jonas Rubenson; Amelia Carr; James Mattson; Thor Besier; Loretta B Chou
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Foot & ankle international / American Orthopaedic Foot and Ankle Society [and] Swiss Foot and Ankle Society     Volume:  32     ISSN:  1071-1007     ISO Abbreviation:  Foot Ankle Int     Publication Date:  2011 Apr 
Date Detail:
Created Date:  2011-07-07     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9433869     Medline TA:  Foot Ankle Int     Country:  United States    
Other Details:
Languages:  eng     Pagination:  407-13     Citation Subset:  IM    
Affiliation:
Stanford, CA; Perth, Australia.
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