Even though the greatest part of playing time consists of low-intensity activities such as standing (, 40%) and walking (, 40%), handball is an intense sport for players. Besides a large number of ...high-intensity actions (i.e., sprints, changes of direction, jumps, etc.), the large amount of body contact and duels increases the neuromuscular load during and after matches.
Shoulder problems are highly prevalent among elite handball players. Reduced glenohumeral rotation, external rotation weakness and scapula dyskinesis have been identified as risk factors.
Evaluate ...the effect of an exercise programme designed to reduce the prevalence of shoulder problems in elite handball.
45 elite handball teams (22 female teams, 23 male teams, 660 players) were cluster randomised (22 teams, 331 players in the intervention group, 23 teams, 329 players in the control group) and followed for 1 competitive season (7 months). The Oslo Sports Trauma Research Center (OSTRC) Shoulder Injury Prevention Programme, an exercise programme to increase glenohumeral internal rotation, external rotation strength and scapular muscle strength, as well as improve kinetic chain and thoracic mobility, was delivered by coaches and captains 3 times per week as a part of the handball warm-up. The main outcome measures, prevalence of shoulder problems and substantial shoulder problems, were measured monthly.
The average prevalence of shoulder problems during the season was 17% (95% CI 16% to 19%) in the intervention group and 23% (95% CI 21% to 26%) in the control group (mean difference 6%). The average prevalence of substantial shoulder problems was 5% (95% CI 4% to 6%) in the intervention group and 8% (95% CI 7% to 9%) in the control group (mean difference 3%). Using generalised estimating equation models, a 28% lower risk of shoulder problems (OR 0.72, 95% CI 0.52 to 0.98, p=0.038) and 22% lower risk of substantial shoulder problems (OR 0.78, 95% CI 0.53 to 1.16, p=0.23) were observed in the intervention group compared with the control group.
The OSTRC Shoulder Injury Prevention Programme reduced the prevalence of shoulder problems in elite handball and should be included as a part of the warm-up.
ISRCTN96217107.
The aim of this research was to determine the effects of an eight-week specific training program on the kinematic parameters of the jump shot at 9m from the goal, among elite female handball players. ...The sample of participants consisted of 30 female handball players (height: 1.73±0.08 m; mass: 69±8.9 kg; body mass index-BMI 22.9±2 kg/m2; training experience: 12.3±6.2 yrs), competing in the first national handball league of the Republic of Serbia. The research was longitudinal in nature, with an initial and final measuring. The experimental treatment included a 30 min replication of the regular training session, with specifically designed exercises (work with medicine balls, stabilizer training, and strength training in a gym). 12 kinematic variables of the jump shop were analyzed using the Kinovea software program, ver. 0.8.2. The analysis of covariance and the effect size (ES) determined a positive effect of the specific program on the kinematic parameters of the jump shot, especially on the variables of height and maximal ball flight velocity.
Der richtige Dreh ins Tor Thaller, Sigrid; Mathelitsch, Leopold; Tilp, Markus
Physik in unserer Zeit,
01/2020, Letnik:
51, Številka:
1
Journal Article
Zusammenfassung
Handball zeichnet sich durch eine Abfolge von langsamen Spielzügen und extrem schnellen Aktionen aus. Wegen der Würfe aus der Hand liegt die Ballgeschwindigkeit deutlich unter der ...anderer Ballsportarten wie Fußball oder Tennis. Die Wurftechnik, besonders im Sprung, ist eine Abfolge von Drehbewegungen des Oberkörpers und nachfolgenden Armbewegungen. Der Drehwurf gibt dem Ball einen Drall, der ihn nach dem Aufsetzen seitlich hinter dem Tormann ins Tor befördern soll. Würfe in das untere Drittel des Tores haben eine höhere Trefferwahrscheinlichkeit als oben. Die Spieltaktik lässt sich mit künstlichen neuronalen Netzen optimieren.
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