Jamia Hamdard.
*Corresponding Author: Pallavi Khanna, M.P.Th (Sports Medicine), M.I.A.P 44E, Reading Road, Edison, New Jersey - 08817. U.S.A, Ph: 001-732-666-5181, E-mail: physio_pallavi@yahoo.co.in.
Balance is affected after fatigue protocol consisting of aerobic and anaerobic exercises and balance recovers within 20 minutes. The purpose of this study is to evaluate what is the effect of various fatigue protocols i.e. aerobic, anaerobic and mixed fatigue protocol on balance and recovery time line for balance.
30 active, normal subjects participated in the study. Each subject performed aerobic, anaerobic and mixed fatigue protocol on different days. Balance was assessed by balance error scoring system (BESS) for three stances, double leg, single leg and tandem on two surfaces, firm and foam.
Each trial lasted 20 seconds. Using the Borg scale rating of perceived exertion (RPE) was also measured for level of physical exertion. Pretest balance reading was taken then the subject performed the specific fatigue protocol and then balance was assessed immediately after the protocol (Posttest 1), 5 minutes after the protocol (Posttest 2), 10 minutes (Posttest 3), 15 minutes (Posttest 4) and 20 minutes (Posttest 5) after the protocol.
The General Linear Model Repeated Measures Analysis of Variance (ANOVA) was used to examine the conditions separately for balance and perceived exertion. Bonferroni Post hoc analysis was done if there was significant difference. One-way ANOVA was used to compare balance and exertion scores between conditions. Post hoc analysis for between conditions was done for comparison. The significance level set for this study was p<0.05.
The results show that balance is affected after different fatigue protocols as evident in BESS posttest reading 1 which is increased after fatigue in all the protocols and balance recovers in 15 minutes after aerobic fatigue protocol, 10 minutes after anaerobic fatigue protocol and 20 minutes after mixed fatigue protocol. Similarly rating of perceived exertion score is also increased after fatigue and recovers the same way as balance.
Aerobic, anaerobic and mixed fatigue protocols all had effect on balance and balance recovers from these protocols within 20 minutes of rest. This information can be applied to the athletic population where the coaches can design a training program in such a way that fatigue does not interfere with performance ability and does not increase the chances of injuries.
Balance, fatigue, aerobic protocol, anaerobic protocol, mixed protocol, recovery
