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Hop stabilization training improves neuromuscular control in college basketball players with chronic ankle instability: a randomized controlled trial
Minoonejad H, Ardakani MK, Rajabi R, Wikstrom EA, Sharifnezhad A
Journal of Sport Rehabilitation 2019 Aug;28(6):576-583
clinical trial
8/10 [Eligibility criteria: No; Random allocation: Yes; Concealed allocation: Yes; Baseline comparability: Yes; Blind subjects: No; Blind therapists: No; Blind assessors: Yes; Adequate follow-up: Yes; Intention-to-treat analysis: Yes; Between-group comparisons: Yes; Point estimates and variability: Yes. Note: Eligibility criteria item does not contribute to total score] *This score has been confirmed*

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.
Copyright Human Kinetics. Reprinted with permission from Human Kinetics (Champaign, IL).

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