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  • Title: Efficacy of instrument-assisted soft tissue mobilization in comparison to gastrocnemius-soleus stretching for dorsiflexion range of motion: A randomized controlled trial.
    Author: Rowlett CA, Hanney WJ, Pabian PS, McArthur JH, Rothschild CE, Kolber MJ.
    Journal: J Bodyw Mov Ther; 2019 Apr; 23(2):233-240. PubMed ID: 31103101.
    Abstract:
    OBJECTIVES: To determine the efficacy of IASTM of the gastrocnemius-soleus complex in comparison to a traditional stretching intervention on dorsiflexion ROM. METHODS: Sixty healthy participants were randomly allocated to one of 3 groups: IASTM (n = 20), stretching (n = 20), or control group (n = 20). The dependent variables for this study was dorsiflexion range of motion (ROM) via three measurement methods which included Modified root position 1- knee extended (MRP1), Modified root position 2- knee flexed (MRP2), and weight bearing lunge test (WBLT). A multivariate analysis of variance (MANOVA) was utilized to analyze the ROM differences between the groups (IASTM, stretching, and control groups), with a post-hoc Tukey and pairwise least significant difference tests to assess individual pairwise differences between the groups. RESULTS: The MANOVA found significant ROM differences between the three intervention groups (F6,110 = 2.40, p = .032). Statistically significant differences were identified between both the IASTM and control as well as the stretching and control group through the WBLT and MRP2 assessments, but not in the MRP1 assessment. Further, there was no statistically significant difference between the IASTM and stretching groups using any of the three methods. CONCLUSION: A single session of IASTM or stretching increased ankle dorsiflexion ROM in WBLT and MRP2. No significant difference was noted in the MRP1. Both IASTM and stretching appear to have a greater effect on soleus muscle flexibility as evidenced by ROM gains measured with the knee in a flexed position. No clinically significant difference was identified between the intervention groups in weight-bearing conditions; thus empowering patients with the use of self-stretching would seemingly be reasonable and efficient. Combined effects of stretching and IASTM warrant further investigation for increasing dorsiflexion range of motion as a summative effect is unknown.
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