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Open AccessArticle

Profiling Shoulder Strength in Competitive Surfers

1
Water Based Research Unit, Bond Institute of Health & Sport, Bond University, Gold Coast, QLD 4226, Australia
2
Faculty of Health Sciences and Medicine, Bond University, Gold Coast, QLD 4226, Australia
3
Centre for Exercise and Sport Science Research, Edith Cowan University, Joondalup, WA 6027, Australia
*
Author to whom correspondence should be addressed.
Sports 2018, 6(2), 52; https://doi.org/10.3390/sports6020052
Received: 3 May 2018 / Revised: 17 May 2018 / Accepted: 26 May 2018 / Published: 30 May 2018
The shoulder region has the highest incidence of acute injuries in the sport of surfing. Little is known about the strength profile at the shoulder in a surfing cohort. The primary aim of this study was to establish the reliability of a rotator cuff strength testing procedure for surfers with a secondary aim of providing a profile of internal and external rotation strength in a competitive surfing cohort. Shoulder internal rotation and external rotation isometric strength was measured using a hand-held dynamometer in 13 competitive surfers. Intra-class coefficient values ranged from 0.97 to 0.98 for intra-rater reliability and were lower for inter-rater reliability ranging from 0.80 to 0.91. Internal rotation strength was greater than external rotation strength bilaterally (dominant, p = 0.007, non-dominant, p < 0.001). No differences (p < 0.79) were found in internal rotation strength between the dominant and non-dominant arms. External rotation strength was weaker on the non-dominant arm compared with the dominant arm (p < 0.02). The non-dominant arm external rotation to internal rotation ratio (0.82 ± 0.15) was lower (p = 0.025) than the dominant arm (0.88 ± 0.14). The current procedure is reliable with the same clinician, and results indicate musculature asymmetry specific to the external rotators. View Full-Text
Keywords: surfing; rotator cuff; shoulder; strength ratio; profiling; assessment surfing; rotator cuff; shoulder; strength ratio; profiling; assessment
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Furness, J.; Schram, B.; Cottman-Fields, T.; Solia, B.; Secomb, J. Profiling Shoulder Strength in Competitive Surfers. Sports 2018, 6, 52.

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