Stability of alignment during extended hold times in the aiming phase of elite archers

Marsden, Lewis

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dc.contributor.author	Marsden, Lewis	*
dc.date.accessioned	2016-08-31T14:05:51Z
dc.date.available	2016-08-31T14:05:51Z
dc.date.issued	2015-09
dc.identifier.citation	Marsden, L. (2015). Stability of alignment during extended hold times in the aiming phase of elite archers. (Master's thesis). University of Chester, United Kingdom.	en
dc.identifier.uri	http://hdl.handle.net/10034/619131
dc.description.abstract	The purpose of this study was to investigate the differences in the stability of alignment in elite archers when hold times in the aiming phase are increased. Eight elite archers (age = 21 ± 2.3 year, height = 1.79 ± .13m, mass = 78.35 ± 7.27kg) took part in the study (two females and six males). Participants shot six arrows under three separate conditions: 100%, 200% and 300% of average hold times in the aiming phase. The velocities of the key anatomical landmarks of alignment (LRSP, LLHE, LAP, RAP, RMHE, RRSP) were measured under all conditions and arrow score was recorded as a measure of performance. One-way repeated measures analysis of variance (ANOVA) and bonferroni post-hoc statistical analysis were adopted for kinematic variables. Friedman’s test of differences betweem repeated measures and Wilcoxen signed-rank test were adopted for arrow score. It was found that velocities at five of the six kinematic variables increased significantly as HT increased (LRSP: p < .001, LLHE: p = .022, LAP: p <.001, RMHE: p = .001, RRSP: p < .001). Arrow scores decreased significantly as HT increased (p = .02). It was concluded that increasing HTs during the aiming phase decreases the stability of alignment and subsequently reduces arrow score.
dc.language.iso	en	en
dc.publisher	University of Chester	en
dc.rights.uri	http://creativecommons.org/licenses/by-nc-nd/4.0/	*
dc.subject	Archery	en
dc.subject	performance analysis	en
dc.title	Stability of alignment during extended hold times in the aiming phase of elite archers	en
dc.type	Thesis or dissertation	en
dc.type.qualificationname	MA	en
dc.type.qualificationlevel	Masters Degree	en
html.description.abstract	The purpose of this study was to investigate the differences in the stability of alignment in elite archers when hold times in the aiming phase are increased. Eight elite archers (age = 21 ± 2.3 year, height = 1.79 ± .13m, mass = 78.35 ± 7.27kg) took part in the study (two females and six males). Participants shot six arrows under three separate conditions: 100%, 200% and 300% of average hold times in the aiming phase. The velocities of the key anatomical landmarks of alignment (LRSP, LLHE, LAP, RAP, RMHE, RRSP) were measured under all conditions and arrow score was recorded as a measure of performance. One-way repeated measures analysis of variance (ANOVA) and bonferroni post-hoc statistical analysis were adopted for kinematic variables. Friedman’s test of differences betweem repeated measures and Wilcoxen signed-rank test were adopted for arrow score. It was found that velocities at five of the six kinematic variables increased significantly as HT increased (LRSP: p < .001, LLHE: p = .022, LAP: p <.001, RMHE: p = .001, RRSP: p < .001). Arrow scores decreased significantly as HT increased (p = .02). It was concluded that increasing HTs during the aiming phase decreases the stability of alignment and subsequently reduces arrow score.