Ankle-Dorsiflexion Range of Motion After Ankle Self-Stretching Using a Strap

Abstract

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 (<20°) 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 α = .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 < .05).

Conclusions: Ankle SSS is recommended to improve ADFROM, PDFROM, and the lunge angle in individuals with limited DFROM.

Keywords: injury prevention; limited ankle dorsiflexion; rehabilitation.

Figures

Figure 1.

Flow chart of the participant-selection procedure. Abbreviation: ADFROM, active dorsiflexion range of motion.

Figure 2.

Ankle self-stretching using a strap.

Figure 3.

Measurement of passive dorsiflexion range of motion.

Figure 4.

Measurement of lunge angle.