Ankle sprains are one of the most common sports injuries. In some people, they can lead to chronic ankle problems that affect daily life and sports performance. In this study, we want to see if combining neuromuscular electrical stimulation (NMES) with proprioceptive neuromuscular facilitation (PNF) can help improve these problems. We plan to recruit 60 participants, with 30 in the experimental group and 30 in the control group. The experimental group will receive PNF stretching with NMES, while the control group will only do PNF stretching. Both groups will have training three times a week for four weeks (12 sessions in total). We will test participants before and after the program, looking at pain, balance, range of motion, proprioception, strength, joint mobility, and functional limitations. We expect that 12 sessions will help improve chronic ankle problems, and that NMES combined with PNF will be more effective than PNF alone.
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Star Excursion Balance Test, SEBT
Timeframe: 1. Baseline (Day 1, prior to intervention) 2. Post-intervention (after 12 sessions, Week 4)
Proprioception - ankle dorsiflexion (degrees)
Timeframe: 1. Baseline (Day 1, prior to intervention) 2. Post-intervention (after 12 sessions, Week 4)
Proprioception - ankle plantarflexion (degrees)
Timeframe: 1. Baseline (Day 1, prior to intervention) 2. Post-intervention (after 12 sessions, Week 4)
Muscle strength - ankle dorsiflexors (kg)
Timeframe: 1. Baseline (Day 1, prior to intervention) 2. Post-intervention (after 12 sessions, Week 4)
Muscle strength - ankle plantarflexors (kg)
Timeframe: 1. Baseline (Day 1, prior to intervention) 2. Post-intervention (after 12 sessions, Week 4)
Range of motion - Ankle dorsiflexion (degrees)
Timeframe: 1. Baseline (Day 1, prior to intervention) 2. Post-intervention (after 12 sessions, Week 4)
Range of motion - Ankle plantarflexion (degrees)
Timeframe: 1. Baseline (Day 1, prior to intervention) 2. Post-intervention (after 12 sessions, Week 4)