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The effect of soft tissue manipulation and self-stretching of pectoralis minor muscle on muscle length and shoulder posture in adolescent elite handball players.: A randomized controlled trial.
Örebro University, School of Health and Medical Sciences, Örebro University, Sweden.
2012 (English)Independent thesis Advanced level (degree of Master (One Year)), 10 credits / 15 HE creditsStudent thesis
Abstract [en]

INTRODUCTION: Handball includes a great portion of repetitive overhead motions in the shoulder girdle. The scapula with its surrounding muscles plays a fundamental role in making these movement patterns optimal. Many studies suggest that a shortened pectoralis minor muscle can affect scapula motions. Recent studies have reported sports related adaptations in the shoulder girdle in adolescent elite tennis and baseball players associated with shoulder injuries. No study has investigated the prevalence of such adaptations, contextualized as differences between dominant and non-dominant shoulder  in adolescent elite handball players or the effect of soft tissue manipulation (STM) combined with self-stretching of the pectoralis minor muscle (PM) regarding muscle length and shoulder posture (SP).   AIM: To compare the length of the PM between the dominant and non-dominant shoulder and to compare the effect of STM and self-stretching (index group) to the effect of placebo treatment of the PM (control group) on the dominant and the non-dominant shoulder regarding muscle length and SP in adolescent elite handball players.METHODS: Sixty five shoulders from 33 adolescent elite handball players, 16 boys aged 15.4 (± 0.9) and 17 girls aged 15.4 (± 0.9), were randomized to either STM and self-stretching or placebo treatment of the PM. PM length and shoulder posture (SP) was measured right before and after treatment. Perceived mobility in the shoulders was measured direct after treatment and after 14 days.RESULTS: The players showed a significantly shorter PM (0,7 cm 95% CI 0,1-1,4) and a more rounded SP on the dominant side. The index group showed a significantly greater increase in PM length than the control group (0,5cm  95% CI 0,2 to 0,7) but there were no significant differences in SP. The index group had a greater effect on the dominant side compared with the non-dominant (0,5cm 95% CI 0,1 to 0,8) regarding PM length. No such difference between dominant and non-dominant shoulder was seen in SP. CONCLUSIONS: Adolescent elite handball players have shoulder adaptations in form of shorter PM in their dominant side compared with the non-dominant. SMT and self-stretching increase the length of PM. To evaluate how long lasting this effect is and the clinically relevance of these effects, further studies is needed. Keywords: Handball, pectoralis minor, scapula, stretching, soft tissue manipulation

Place, publisher, year, edition, pages
2012. , p. 16
Keywords [en]
Handball, pectoralis minor, scapula, stretching, soft tissue manipulation
National Category
Other Medical Sciences
Identifiers
URN: urn:nbn:se:oru:diva-23395ISRN: ORU-IHM/MED-AG-2012/0001--SEOAI: oai:DiVA.org:oru-23395DiVA, id: diva2:534499
Subject / course
Medicine
Uppsok
Medicine
Supervisors
Examiners
Available from: 2012-06-27 Created: 2012-06-12 Last updated: 2017-10-17Bibliographically approved

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CiteExportLink to record
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