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Reliability of an instrument to determine lower limb comfort in professional football
Authors Kinchington M, Ball K, Naughton G
Published 17 June 2010 Volume 2010:1 Pages 77—85
DOI https://doi.org/10.2147/OAJSM.S11209
Review by Single anonymous peer review
Peer reviewer comments 4
Michael Kinchington1, Kevin Ball1, Geraldine Naughton2
1School of Human Movement, Recreation and Performance, Victoria University, Melbourne, Australia; 2The Centre of Physical Activity Across the Lifespan (COPAAL), Australian Catholic University, Victoria, Australia
Aims and Objectives: This study extends previous work in the field of injury awareness using a novel lower limb comfort index (LLCI), which was developed to assess comfort in professional football. Participants rated comfort for designated anatomical segments of the lower limb utilizing a seven point Likert scale. The aims of the study were (i) to assess the reliability of the LLCI in a competitive football environment (Australian Rules and Rugby League), and (ii) to assess whether LLCI measurements were responsive to changes in lower limb comfort over time.
Methods and Results: The reliability of the LLCI was observed in two professional football environments: Training Week (mean difference 0.1 point, intra-class correlation coefficient, ICC 0.99) for n = 41 participants; and Match Day (mean difference 0.2 points, ICC 0.97) for n = 22 players. Measurements of lower limb comfort were responsive to changes in comfort over time. Within-player differences were not significant for periods 0–8 hrs (P > 0.05) but, generally, significant for time periods 0–24 hrs (P < 0.05), and significant between 24–96 hrs (P < 0.01). The results indicate that the LLCI was reliable when tested for repeated measures and indicated how the index measures lower limb comfort changes over time.
Conclusion: This study shows that the use of a lower limb comfort index, when used in a competitive football environment, is both reliable and responsive to change during both a training week and under match day conditions.
Keywords: lower limb comfort, musculoskeletal, football, injury
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