title: The effect of exercise on motor performance tasks used in the neurological assessment of sports-related concussion.
abstract: Sports-related concussion is assessed using both cognitive and motor performance tasks. There is limited understanding of how exercise affects these measures. The purpose of this study was to investigate the effect of moderate-intensity exercise on three selected measures of motor performance. A repeated measures design was used to compare baseline motor performance scores with post-exercise scores with an exercise intervention modelled on the physiological demands of a team sport. 30 physically active subjects performed timed motor performance tasks: Finger-to-Nose (FTN), Tandem Gait (TG) and Single Leg Stance (SLS). The tasks were administered twice pre-exercise and twice post-exercise. FTN, TG and SLS demonstrated high test-retest reliability (ICC values >0.8). 15 minutes of moderate-intensity exercise caused a significant improvement in FTN (T2 = 2.66 (SD 0.38), T3 = 2.49 (0.32); p<0.001) and TG (T2 = 13.08 (2.84), T3 = 12.23 (2.22); p = 0.001), but not in SLS (T2 = 5.94 (4.99), T3 = 5.91 (5.54); p = 0.507). Improvement in the performance of motor tasks after exercise has implications for the immediate assessment of sports-related concussion, given that measures of motor performance are utilised in concussion assessment instruments.
authors.affiliation: Centre for Physiotherapy Research, School of Physiotherapy, University of Otago, PO Box 56, Dunedin 9054, New Zealand. tony.schneiders@otago.ac.nz
authors.forename: A G
authors.initials: AG
authors.lastname: Schneiders
authors.forename: S J
authors.initials: SJ
authors.lastname: Sullivan
authors.forename: P R
authors.initials: PR
authors.lastname: McCrory
authors.forename: A
authors.initials: A
authors.lastname: Gray
authors.forename: S
authors.initials: S
authors.lastname: Maruthayanar
authors.forename: P
authors.initials: P
authors.lastname: Singh
authors.forename: P
authors.initials: P
authors.lastname: Ranhotigammage
authors.forename: R
authors.initials: R
authors.lastname: Van der Salm
mesh_terms: D001265:Athletic Injuries / Q000150:complications / Q000503:physiopathology*; D001924:Brain Concussion / Q000209:etiology / Q000503:physiopathology*; D015331:Cohort Studies; D015444:Exercise / Q000502:physiology*; D005080:Exercise Test / Q000379:methods; D005260:Female; D006801:Humans; D008297:Male; D009048:Motor Skills / Q000502:physiology*; D009460:Neurologic Examination; D004856:Postural Balance / Q000502:physiology; D015203:Reproducibility of Results; D013647:Task Performance and Analysis; D055815:Young Adult