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THE JOURNAL OF SPORTS MEDICINE AND PHYSICAL FITNESS
Rivista di Medicina, Traumatologia e Psicologia dello Sport
Indexed/Abstracted in: Chemical Abstracts, CINAHL, Current Contents/Clinical Medicine, EMBASE, PubMed/MEDLINE, Science Citation Index Expanded (SciSearch), Scopus
Impact Factor 1,111
ORIGINAL ARTICLES PHYSIOLOGY AND BIOMECHANICS
The Journal of Sports Medicine and Physical Fitness 2010 December;50(4):422-7
Functional knee brace use by non-injured subjects while performing an anaerobic capacity task: preliminary study
Rishiraj N., Taunton J. E., Lloyd-Smith R., Niven B.,Regan W., Woollard R. ✉
1 ACTIN Health & Rehabilitation Inc., Vancouver, Canada;
2 Vancouver Winter 2010 Olympics Medical Committee (Head) and Allan McGavin Sports Medicine Centre (Primary Care) University of British Columbia, Vancouver, Canada;
3 Allan McGavin Sports Medicine Centre (Primary Care) and University of British Columbia Athletics, University of British Columbia, Vancouver, Canada;
4 Department of Mathematics & Statistics, University of Otago, Otago, New Zealand;
5 Allan McGavin Sports Medicine Centre (Orthopedics) University of British Columbia, Vancouver, Canada;
6 Department of Family Practice (Head), University of British Columbia, Vancouver, Canada
AIM: The objective of this paper was to investigate if performance was hindered in non-injured braced athletes during an anaerobic task. If performance was affected, could accommodation to wearing a knee brace occur and thus decreasing performance hindrance concern while using a functional knee brace (FKB).
METHODS: A 2x3 non-braced (NBr) and braced repeated measure factorial design. Five healthy athletes completed all testing. Subjects performed the Repeated High Intensity Shuttle Test (RHIST) over six days (three days NBr and three days braced). Running times were recorded each testing day to determine performance measures and percent fatigue levels while using a FKB and if accommodation to FKB use was possible.
RESULTS: Non significant (F1,4=1.42, P=0.299) faster group mean performance time, was recorded for braced subjects relative to the non-braced condition. Although relatively faster performance levels were noted during the braced testing conditions during days 1 and 3 compared to the non-braced condition, these results were also not significant (F2,8=2.82, P=0.118). Lower percent fatigue level was recorded during all three braced days compared to non-braced days. Further, a tendency for accommodation to knee brace trend use was noted as the percentage performance difference between the two conditions had decreased by the last day of testing.
CONCLUSION: Use of a knee brace did not hinder performance once accommodation to using the knee brace occurred and fatigue was not a factor while using a knee brace. Additional research, using a larger sample size and longer testing duration, is required to confirm the potential accommodation trend.