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Pubmed for Handhelds

PUBMED FOR HANDHELDS

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  • Title: Handball load and shoulder injury rate: a 31-week cohort study of 679 elite youth handball players.
    Author: Møller M, Nielsen RO, Attermann J, Wedderkopp N, Lind M, Sørensen H, Myklebust G.
    Journal: Br J Sports Med; 2017 Feb; 51(4):231-237. PubMed ID: 28104592.
    Abstract:
    BACKGROUND: Knowledge of injury patterns, an essential step towards injury prevention, is lacking in youth handball. AIM: To investigate if an increase in handball load is associated with increased shoulder injury rates compared with a minor increase or decrease, and if an association is influenced by scapular control, isometric shoulder strength or glenohumeral range of motion (ROM). METHODS: 679 players (14-18 years) provided weekly reports on shoulder injury and handball load (training and competition hours) over 31 weeks using the SMS, phone and medical examination system. Handball load in a given week was categorised into (1) <20% increase or decrease (reference), (2) increase between 20% and 60% and (3) increase >60% relative to the weekly average amount of handball load the preceding 4 weeks. Assessment of shoulder isometric rotational and abduction strength, ROM and scapular control was performed at baseline and midseason. RESULTS: An increase in handball load by >60% was associated with greater shoulder injury rate (HR 1.91; 95% CI 1.00 to 3.70, p=0.05) compared with the reference group. The effect of an increase in handball load between 20% and 60% was exacerbated among players with reduced external rotational strength (HR 4.0; 95% CI 1.1 to 15.2, p=0.04) or scapular dyskinesis (HR 4.8; 95% CI 1.3 to 18.3, p=0.02). Reduced external rotational strength exacerbated the effect of an increase above 60% (HR 4.2; 95% CI 1.4 to 12.8, p=0.01). CONCLUSIONS: A large increase in weekly handball load increases the shoulder injury rate in elite youth handball players; particularly, in the presence of reduced external rotational strength or scapular dyskinesis.
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