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BMC Musculoskeletal Disorders
Published in: BMC Musculoskeletal Disorders 1/2015

Open Access 01-12-2015 | Research article

The effect of Astym® Therapy on muscle strength: a blinded, randomized, clinically controlled trial

Authors: Benjamin R. Kivlan, Christopher R. Carcia, F. Richard Clemente, Amy L. Phelps, RobRoy L. Martin

Published in: BMC Musculoskeletal Disorders | Issue 1/2015

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Abstract

Background

Astym® therapy is a manual therapy intervention used to stimulate tissue healing, decrease pain, improve mobility, and improve muscle performance associated with musculoskeletal pathology. The purpose of this study was to determine if Astym therapy administered to the lower extremity would result in an immediate change of maximal force output during a unilateral isometric squat test among individuals with a lower extremity injury.

Methods

Forty-five subjects (14 males; 31females) between 18 and 65 years of age were randomized into 3 treatment groups: 1) Control group – received no treatment 2) Placebo group – received a sham Astym treatment 3) Astym therapy group– received Astym therapy to the lower extremity. A baseline measure of maximal force output (pre-test) during a unilateral isometric squat was performed. The subjects then received the designated treatment intervention. Immediately following the treatment intervention, maximal force output (post-test) was retested using identical testing procedures by an investigator who was blinded to the treatment intervention received by the subjects. The percent change of maximal force output from pre-test to post-test measures was compared using a one-way analysis of variance. A Tukey’s post-hoc analysis determined the statistical differences between the groups.

Results

The treatment intervention had a significant effect on the percent change of maximal force output [F(2,42) = 7.91, p = 0.001]. Tukey’s post hoc analysis demonstrated that the percent change of maximal force output was significantly greater in the Astym group (15 ± 18 % change of Newtons) compared to the placebo (−6 ± 11 % change of Newtons; p = 0.0001) and control (−1 ± 17 % change of Newtons; p = 0.0014) groups. No significant difference (p = 0.68) was noted between the control and placebo groups.

Conclusions

Astym therapy to the involved lower extremity increased maximum force output during an isometric squat test immediately following treatment. The results of this study suggest that Astym therapy can immediately improve muscle performance (maximal force output) for patients presenting with muscular weakness caused by a lower extremity musculoskeletal injury.

Trial registration

Clinicaltrials.gov NCT02349230. Registered 23 January 2015.
Appendix
Available only for authorised users
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Metadata
Title
The effect of Astym® Therapy on muscle strength: a blinded, randomized, clinically controlled trial
Authors
Benjamin R. Kivlan
Christopher R. Carcia
F. Richard Clemente
Amy L. Phelps
RobRoy L. Martin
Publication date
01-12-2015
Publisher
BioMed Central
Published in
BMC Musculoskeletal Disorders / Issue 1/2015
Electronic ISSN: 1471-2474
DOI
https://doi.org/10.1186/s12891-015-0778-9

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