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Hop Stabilization Training Improves Neuromuscular Control in Collegiate Basketball Players with Chronic Ankle Instability: A Randomized Controlled Trial.

CONTEXT
Neuromuscular control deficit has been reported in people with chronic ankle instability (CAI) and hopping exercises have been recommended as a functional training tool to prevent lower limb injury, but its effects on lower extremity neuromuscular control in those with CAI are unclear.


OBJECTIVE
To investigate the effect of hop stabilization training on neuromuscular control and self-reported function in collegiate basketball players with CAI.


STUDY DESIGN
A randomized controlled trial.


SETTING
Research Laboratory. Patients (or Other Participants): Twenty-eight college basketball players with CAI were randomly assigned to the experimental hop stabilization group (age 22.78± 3.09 years, weight 82.59± 9.51 kg, height 187.96± 7.93 cm) or the control group (age 22.57± 2.76 years, weight 78.35± 7.02 kg, height 185.69± 7.28 cm).


INTERVENTION
Participants in the experimental group performed supervised hop stabilization exercises 3 times per week for 6 weeks. The control group received no intervention.


MAIN OUTCOME MEASURES
Preparatory and reactive muscle activation levels and muscle onset time were assessed from eight lower extremity muscles during a jump landing task before and after the 6-week training program.


RESULTS
Significant improvements in preparatory muscle activation, reactive muscle activation, and muscle onset time were noted across the lower extremity in the experimental group relative to the control group (p <0.05). Self-reported function also improved in the experimental group relative to the control group (p <0.05).


CONCLUSIONS
These findings demonstrate that 6-weeks of hop stabilization training is effective in improving neuromuscular control and self-reported function in collegiate basketball players with CAI. Hop stabilization exercises can be incorporated into rehabilitation program for CAI.