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Stability of alignment during extended hold times in the aiming phase of elite archers
Marsden, Lewis
Marsden, Lewis
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2015-09
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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.
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.
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University of Chester
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Thesis or dissertation
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en