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Abstract

OBJECTIVES: The aim of this study was to compare the acute effects of isometric versus dynamic resistance exercise on pain during a pain-provoking activity, and exercise-induced hypoalgesia in participants with patellar tendinopathy.

DESIGN: This study was a pre-registered randomised crossover study. Participants were blinded to the study hypothesis.

METHODS: Participants (N = 21) performed a single session of high load isometric resistance exercise or dynamic resistance exercise, in a randomised order separated by a 7-day washout period. Outcomes were assessed before, immediately after, and 45 min post-exercise. The primary outcome was pain intensity scored on a numeric pain rating scale (NRS; 0-10) during a pain-provoking single leg decline squat (SLDS). Secondary outcomes were pressure pain thresholds (PPTs) locally, distally and remotely, as well as tendon thickness.

RESULTS: There was a significant decrease in pain NRS scores (mean reduction 0.9, NRS 95%CI 0.1-1.7; p = 0.028), and increase in PPTs at the tibialis anterior muscle (mean increase 34 kPa 95%CI 9.5-58.5; p = 0.009) immediately post-exercise. These were not sustained 45 min post-exercise for pain (NRS) or PPTs (p > 0.05). There were no differences between exercise on any outcome.

CONCLUSIONS: While patients with patellar tendinopathy decreased pain during SLDS in response to resistance training, but the magnitude was small. Contraction mode may not be the most important factor in determining the magnitude of pain relieving effects. Similarly, there were only small increases in PPTs at the tibialis anterior which were not superior for isometric exercise.

OriginalsprogEngelsk
TidsskriftJournal of Science and Medicine in Sport
Vol/bind23
Udgave nummer3
Sider (fra-til)208-214
Antal sider7
ISSN1440-2440
DOI
StatusUdgivet - mar. 2020

Bibliografisk note

Copyright © 2019 Sports Medicine Australia. Published by Elsevier Ltd. All rights reserved.

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