Effects on Plantarflexor Strength, Calf Girth, and Dorsiflexion Range of Motion When Static Stretching is Implemented During Two Weeks of Immobilization

Abstract

This study examined the effects of chronic static stretching on dorsiflexion range of motion (ROM), calf strength, and calf girth when immobilized for two weeks. Thirty-six North Dakota State University students participated in this study and were divided into one of three groups: control group (CG), experimental group (EG), and experimental stretching group (ESG). All participants completed a pre-test of calf girth, strength, and dorsiflexion ROM. After the pretest, both experimental groups wore an immobilizer for two weeks. In addition, the ESG stretched for 10 minutes, twice daily. Data analysis indicated significant differences were found between groups for post-test measures of girth (F2,31=6.50, p=0.0048), dorsiflexion ROM (F2,31=29.06, p<0.0001), and strength (F2,31=6.74, p=0.0041). Post hoc testing indicated significant increases in dorsiflexion ROM and calf strength in the ESG and significant decreases in dorsiflexion ROM and calf strength in the EG. Also, the EG lost more girth than the ESG.