Effect of 2-week and 4-week wobble board exercise programme for improving the muscle onset latency and perceived stability in basketball players with recurrent ankle sprain

This study was carried out to find the effects of 4-week and 2-week wobble board training in improving of muscle onset latency and perceived stability in basketball players diagnosed with recurrent ankle sprain, as there is decreased muscle onset latency of peroneus longus and tibialis anterior muscle and perceived instability following ankle sprains.

Different subject experimental – Pre to Post test design.

Clinical setting.

Twenty seven male and three female recurrent lateral ankle sprain individuals.

Surface EMG of PL (peroneus longus) and TL(tibialis anterior),this was measured during sudden 20⁰ inversion using trap door mechanism, AJFAT(ankle joint functional assessment tool) questionnaire was used to rate each participant's perception of their ankle stability.

The outcome difference of PL latency between Group A (2 weeks) (15.73+_6.01) and Group B(4weeks) (30.20+_6.44) shows a strongly significant difference and effect size is VL (very large) i.e.2.26 (p<0.001**).

The outcome difference of TA latency between Group A (21.13+_11.47) and Group B (30.53+_8.48) shows a moderately significant difference and effect size is L (large) i.e.0.91 (p<0.016*).

The outcome difference of AJFAT between Group A (9.20+_3.29) and Group B (15.80+_3.45) shows a strongly significant difference and effect size is VL (very large) i.e.1.88 (p<0.001**).

Results demonstrated that the 4-weeks wobble board exercise programme significantly decreased muscle onset latency of the TA and PL in response to a sudden 20° ankle inversion as compared to 2 weeks wobble board exercise programme.

Hence this study concluded that 4 weeks wobble board exercise was better than 2 weeks wobble board exercise training for improving muscle onset latency and perceived stability in ankle sprains.