Trenton D Salo1, Eric Chaconas2. 1. Calvin College, Grand Rapids, MI, USA. 2. University of St. Augustine, St. Augustine, FL, USA.
Abstract
BACKGROUND: A paucity of research currently exists for upper extremity return to sport testing. The Upper Quarter Y-Balance Test (YBT-UQ) is a clinical test of closed kinetic chain performance with demonstrated reliability. Prior investigations of the YBT-UQ were conducted with individuals in a resting state and no comparison to performance in a fatigued state has been conducted. PURPOSE: To examine the effect of upper extremity fatigue on the performance of the YBT-UQ in recreational weightlifters. STUDY DESIGN: Randomized controlled trial. METHODS:24 participants who participated in recreational weight training three days per week were randomly allocated to a control or experimental group. Individuals in the control group were tested using the YBT-UQ and re-tested after a 20-minute rest period. Participants in the experimental group were tested with the YBT-UQ, performed an upper extremity exercise fatigue protocol, and immediately re-tested. Examiners were blinded to participant allocation. RESULTS: Differences from pre- to post-fatigue YBT-UQ testing revealed score reductions between 2.04cm - 12.16cm for both composite scores and individual reach directions. The repeated measures ANOVA revealed significant differences when comparing the pre- and post-testing results between the fatigue and non-fatigue groups for all individual directions (p ≤ .006) and composite scores both limbs (p<.035). CONCLUSION: The performance of an upper body fatigue protocol significantly reduces YBT-UQ scores in recreational weightlifters. LEVEL OF EVIDENCE: 1b.
RCT Entities:
BACKGROUND: A paucity of research currently exists for upper extremity return to sport testing. The Upper Quarter Y-Balance Test (YBT-UQ) is a clinical test of closed kinetic chain performance with demonstrated reliability. Prior investigations of the YBT-UQ were conducted with individuals in a resting state and no comparison to performance in a fatigued state has been conducted. PURPOSE: To examine the effect of upper extremity fatigue on the performance of the YBT-UQ in recreational weightlifters. STUDY DESIGN: Randomized controlled trial. METHODS: 24 participants who participated in recreational weight training three days per week were randomly allocated to a control or experimental group. Individuals in the control group were tested using the YBT-UQ and re-tested after a 20-minute rest period. Participants in the experimental group were tested with the YBT-UQ, performed an upper extremity exercise fatigue protocol, and immediately re-tested. Examiners were blinded to participant allocation. RESULTS: Differences from pre- to post-fatigue YBT-UQ testing revealed score reductions between 2.04cm - 12.16cm for both composite scores and individual reach directions. The repeated measures ANOVA revealed significant differences when comparing the pre- and post-testing results between the fatigue and non-fatigue groups for all individual directions (p ≤ .006) and composite scores both limbs (p<.035). CONCLUSION: The performance of an upper body fatigue protocol significantly reduces YBT-UQ scores in recreational weightlifters. LEVEL OF EVIDENCE: 1b.
Authors: Susan A Falsone; Michael T Gross; Kevin M Guskiewicz; Robert A Schneider Journal: J Orthop Sports Phys Ther Date: 2002-03 Impact factor: 4.751
Authors: Craig A Wassinger; Hayley McKinney; Stephanie Roane; Mary Jo Davenport; Bea Owens; Ute Breese; Geri Ann Sokell Journal: Int J Sports Phys Ther Date: 2014-02
Authors: Robert J Butler; Heather S Myers; Douglass Black; Kyle B Kiesel; Phillip J Plisky; Claude T Moorman; Robin M Queen Journal: Int J Sports Phys Ther Date: 2014-08
Authors: Alexis Ortiz; Sharon L Olson; Bruce Etnyre; Elaine E Trudelle-Jackson; William Bartlett; Heidi L Venegas-Rios Journal: J Strength Cond Res Date: 2010-04 Impact factor: 3.775
Authors: Robert Butler; Jennifer Arms; Michael Reiman; Phillip Plisky; Kyle Kiesel; Dean Taylor; Robin Queen Journal: J Athl Train Date: 2014-07-11 Impact factor: 2.860