CONTEXT: A variety of ankle self-stretching exercises have been recommended to improve ankle-dorsiflexion range of motion (DFROM) in individuals with limited ankle dorsiflexion. A strap can be applied to stabilize the talus and facilitate anterior glide of the distal tibia at the talocrural joint during ankle self-stretching exercises. Novel ankle self-stretching using a strap (SSS) may be a useful method of improving ankle DFROM. OBJECTIVE: To compare the effects of 2 ankle-stretching techniques (static stretching versus SSS) on ankle DFROM. DESIGN: Randomized controlled clinical trial. SETTING: University research laboratory. PATIENTS OR OTHER PARTICIPANTS: Thirty-two participants with limited active dorsiflexion (< 20degree) while sitting (14 women and 18 men) were recruited. MAIN OUTCOME MEASURE(S): The participants performed 2 ankle self-stretching techniques (static stretching and SSS) for 3 weeks. Active DFROM (ADFROM), passive DFROM (PDFROM), and the lunge angle were measured. An independent t test was used to compare the improvements in these values before and after the 2 stretching interventions. The level of statistical significance was set at alpha = 0.05. RESULTS: Active DFROM and PDFROM were greater in both stretching groups after the 3-week interventions. However, ADFROM, PDFROM, and the lunge angle were greater in the SSS group than in the static-stretching group (p < 0.05). CONCLUSIONS: Ankle SSS is recommended to improve ADFROM, PDFROM, and the lunge angle in individuals with limited DFROM.

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