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Handball playing positions can be differentiated between first line players whoposition themselves near the 6-m line and second line players who typically playoutside the 9-m space. Handball is characterized by a high number of throwingactions that cause adaptations in the throwing shoulder. The objective of thiscross-sectional study was to assess whether the specific physiologicalpositional demands in handball lead to functional performance differencesbetween the playing positions (N=196; goalkeepers:n=25; backcourt: n=99; pivots:n=21; winger: n=51) in terms of shoulder mobilityand stability in any reach direction as assessed through the Upper Quarter YBalance Test (YBT-UQ). Contrary to our hypothesis, the results did not showsignificant differences between the playing positions in shoulder mobility andstability in youth handball players, irrespective of reach arm and reachdirection. The obtained effect sizes (ηp2)were solely small and ranged between 0.01 and 0.03. The adaptations followingthe demands of the diverging playing positions do not lead to significantdifferences in shoulder mobility and stability on the basis of the YBT-UQ. Theoverall training load of youth handball players may not be sufficient to lead tosignificant position-specific differences in shoulder mobility andstability.

Diverging Playing Positions do not Lead to Differences in YBT-UQ Performance in Youth Handball Players