title: Recovery of time on limits of stability from functional fatigue in Division II collegiate athletes.
abstract: Health and fitness professionals working with athletes could establish effective and safe practice and training programs if recovery time on dynamic balance from exertion was available. Research investigating the time needed to recover dynamic limits of stability (LOS) from exertion has not been reported. The purpose of this study was to determine the recovery timeline on LOS from functional fatigue in collegiate athletes. Eighteen athletes (11 men, 7 women) from Division II collegiate soccer team who passed prescreening tests to identify their fitness levels were randomly tested on 2 different days by condition (fatigue or nonfatigue). Functional fatigue was determined by using the Borg 15-point rating of perceived exertion (RPE) scale. Subjects were tested on LOS on the Biodex Balance System pre, post, 10, 15, and 20 minutes for each condition. The main effect for condition was not significant (F() = 0.004, p = 0.948), whereas the main effect for time was significant (F(4,64) = 6.167, p < 0.001). The RPE scoring revealed the significant main effect in FATIGUE (F(2.69, 45.73) = 234.8, p < 0.001). In conclusion, 20 minutes of functional activity will likely have a negative influence on dynamic balance, with balance recovery occurring within 10 minutes after the cessation of exercise in Division II collegiate soccer athletes. Moreover, the level of exertion measured by RPE would correspond to athletes' ability to control their center of mass.
authors.affiliation: Laboratory of Sports Medicine, Faculty of Sports and Health Science, Fukuoka University, Fukuoka, Japan. ishizuka@fukuoka-u.ac.jp
authors.forename: Toshimitsu
authors.initials: T
authors.lastname: Ishizuka
authors.forename: Rebecca A
authors.initials: RA
authors.lastname: Hess
authors.forename: Ben
authors.initials: B
authors.lastname: Reuter
authors.forename: Marc S
authors.initials: MS
authors.lastname: Federico
authors.forename: Yosuke
authors.initials: Y
authors.lastname: Yamada
mesh_terms: D000328:Adult; D000704:Analysis of Variance; D005260:Female; D006801:Humans; D008297:Male; D018763:Muscle Fatigue / Q000502:physiology*; D010465:Perception; D010807:Physical Endurance / Q000502:physiology*; D005082:Physical Exertion / Q000502:physiology; D004856:Postural Balance / Q000502:physiology*; D011434:Proprioception; D020127:Recovery of Function / Q000502:physiology*; D012737:Sex Factors; D013997:Time Factors; D055815:Young Adult