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Corrective exercises improve movement efficiency and sensorimotor function but not fatigue sensitivity in chronic ankle instability patients: a randomized controlled trial
Bagherian S, Rahnama N, Wikstrom EA
Clinical Journal of Sport Medicine 2019 May;29(3):193-202
clinical trial
7/10 [Eligibility criteria: Yes; Random allocation: Yes; Concealed allocation: Yes; Baseline comparability: Yes; Blind subjects: No; Blind therapists: No; Blind assessors: No; 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*

OBJECTIVE: To investigate the effect of corrective exercises on functional movement patterns, sensorimotor function, self-reported function, and fatigue sensitivity in collegiate athletes with chronic ankle instability (CAI). DESIGN: A randomized controlled trial. SETTING: Laboratory of sports sciences. PARTICIPANTS: Forty male volunteers were randomly assigned to the experimental group (age 21.2 +/- 1.7 years, height 174.5 +/- 6.1 cm, and weight 69.6 +/- 6.9 kg) or the control group (age 20.9 +/- 1.8 years, height 178.2 +/- 6.6 cm, and weight 68.8 +/- 8.1 kg). INTERVENTION: Participants in the experimental group performed supervised corrective exercises 3 times per week for 8 weeks. Fatigue was induced with a progressive treadmill protocol before and after the 8-week intervention. MAIN OUTCOME MEASURES: Outcomes included movement efficiency during 3 squat tasks, static and dynamic postural control, strength of the ankle musculature, joint position sense, and self-reported function with the Foot and Ankle Ability Measure subscales. These outcomes were assessed before and immediately after fatiguing treadmill running both before and after 8-weeks of corrective exercises. RESULTS: Significant improvements in movement efficiency, sensorimotor function, and self-reported function were noted in the experimental group relative to the control group (p < 0.001), in a nonfatigued state. However, in a fatigued stated, the experimental intervention only improved static postural control (p = 0.016) relative to the control group. CONCLUSIONS: These findings demonstrate that 8-weeks of corrective exercises were effective at enhancing movement efficiency, sensorimotor function, and self-reported function in collegiate athletes with CAI. However, this intervention program has limited abilities at reducing the effects of fatigue.
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