A kinetic study into the effects of varying foot positions upon force production in the scrum and its implications towards coaching, performance, and injury
University of Wales Institute Cardiff
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The aim of the study was to quantify the effect of varying foot positions upon individual force characteristics in the scrum. In an attempt to recognise if one particular foot position was more productive than another. With the findings, the aim was to then link towards aiding: coaching, performance, and the management of preventing injuries sustained whilst scrummaging. Elite male rugby players (n = 6) were used to complete this study. The participants involved in this study were a mean age of 23.8 (± 4.9 yrs), a mean height of 104.6kg (± 10.2kg), and 1.83cm (± 2.7cm) in height. The independent variables assessed in this study were the three varying foot placements, whilst the dependant variables included; horizontal peak force (PFx), vertical peak force (PFz), resultant peak force (PFr), force vector angle (PFv θ), average sustained horizontal force (Avg PFx), average sustained vertical force (Avg Fz), average sustained resultant force (Avg Fr), and average sustained force vector angle (Avg Fv θ). The descriptive findings suggested that foot position 2 in terms of force production was the dominant position of the three. After statistical analysis the findings suggested that there were non-significant differences (P > 0.05), for PFx (P = 0.26), PFz (P = 0.15), PFr (P = 0.157), PFv θ (P = 0.601), Avg Fx (P = 0.183), Avg Fz (P = 0.083), Avg Fr (P = 0.101), and Avg Fv θ (P = 0.547) when using anyone of the three-foot positions. In conclusion, the data produced still manages to give extremely useful information from which a variety of coaches and trainers could benefit and use to aid in: improving performance levels in both junior and senior players, and providing coaches and players with a basic reference point from which to work from.
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