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Meta-Analysis of the Effect of Exercise on Neuropathic Pain Induced by Peripheral Nerve Injury in Rat Models.


ABSTRACT: Background: There is accumulating evidence showing that exercise therapy may play an active role in peripheral neuropathic pain (NP). However, there have been no meta-analysis to investigate the effects of exercise on NP induced by peripheral nerve injury in rat models. Methods: PubMed, EMBASE, and Web of Science were searched from inception to January 2019. A random-effect model was implemented to provide effect estimates for pain-related behavioral test outcome. Mean differences (MDs) with 95% confidence intervals (CIs) were calculated. Results: Fourteen studies were included. For the mechanical withdrawal threshold, rats in the exercised group exhibited significantly higher thresholds than those in the control group, with a MD of 0.91 (95% CI 0.11-1.71), 3.11 (95% CI 1.56-4.66), 3.48 (95% CI 2.70-4.26), 4.16 (95% CI 2.53-5.79), and 5.58 (95% CI 3.44-7.73) at 1, 2, 3, 4, and 5 weeks, respectively. Additionally, thermal withdrawal latency increased in the exercised group compared with the control group, with a MD of 2.48 (95% CI 0.59-4.38), 3.57 (95% CI 2.10-5.05), 3.92 (95% CI 2.82-5.03), and 2.84 (95% CI 1.29-4.39) at 1, 2, 3, and 4 weeks, respectively. Subgroup analyses were performed for pain models, exercise start point, exercise forms, and duration, which decreased heterogeneity to some extent. Conclusion: This meta-analysis indicated that exercise provoked an increase in mechanical withdrawal threshold and thermal withdrawal latency in animal NP models. Exercise therapy may be a promising non-pharmacologic therapy to prevent the development of NP. Further, preclinical studies focused on improving experiment design and reporting are still needed.

SUBMITTER: Guo JB 

PROVIDER: S-EPMC6587136 | biostudies-literature | 2019

REPOSITORIES: biostudies-literature

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Meta-Analysis of the Effect of Exercise on Neuropathic Pain Induced by Peripheral Nerve Injury in Rat Models.

Guo Jia-Bao JB   Chen Bing-Lin BL   Wang Ying Y   Zhu Yi Y   Song Ge G   Yang Zheng Z   Zheng Yi-Li YL   Wang Xue-Qiang XQ   Chen Pei-Jie PJ  

Frontiers in neurology 20190614


<b>Background:</b> There is accumulating evidence showing that exercise therapy may play an active role in peripheral neuropathic pain (NP). However, there have been no meta-analysis to investigate the effects of exercise on NP induced by peripheral nerve injury in rat models. <b>Methods:</b> PubMed, EMBASE, and Web of Science were searched from inception to January 2019. A random-effect model was implemented to provide effect estimates for pain-related behavioral test outcome. Mean differences  ...[more]

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