Isometric exercise induces analgesia and reduces inhibition in patellar tendinopathy

Ebonie Rio, Dawson Kidgell, Craig Purdam, Jamie GAIDA, G Lorimer Moseley, Alan Pearce, Jill Cook

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    Abstract

    Few interventions reduce patellar tendinopathy (PT) pain in the short term. Eccentric exercises are painful and have limited effectiveness during the competitive season. Isometric and isotonic muscle contractions may have an immediate effect on PT pain. This single-blinded, randomised cross-over study compared immediate and 45 min effects following a bout of isometric and isotonic muscle contractions. Outcome measures were PT pain during the single-leg decline squat (SLDS, 0-10), quadriceps strength on maximal voluntary isometric contraction (MVIC), and measures of corticospinal excitability and inhibition. Data were analysed using a split-plot in time-repeated measures analysis of variance (ANOVA). 6 volleyball players with PT participated. Condition effects were detected with greater pain relief immediately from isometric contractions: isometric contractions reduced SLDS (mean±SD) from 7.0±2.04 to 0.17±0.41, and isotonic contractions reduced SLDS (mean±SD) from 6.33±2.80 to 3.75±3.28 (p
    Original languageEnglish
    Pages (from-to)1277-1283
    Number of pages7
    JournalBritish Journal of Sports Medicine
    Volume49
    Issue number19
    DOIs
    Publication statusPublished - 2015

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    Rio, E., Kidgell, D., Purdam, C., GAIDA, J., Moseley, G. L., Pearce, A., & Cook, J. (2015). Isometric exercise induces analgesia and reduces inhibition in patellar tendinopathy. British Journal of Sports Medicine, 49(19), 1277-1283. https://doi.org/10.1136/bjsports-2014-094386