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Landing biomechanics are not immediately altered by a single-dose patellar tendon isometric exercise protocol in male athletes with patellar tendinopathy: A single-blinded randomized cross-over trial.

Publication ,  Journal Article
Pietrosimone, LS; Blackburn, JT; Wikstrom, EA; Berkoff, DJ; Docking, SI; Cook, J; Padua, DA
Published in: Phys Ther Sport
November 2020

OBJECTIVES: To a) determine the acute effects of a single-dose patellar tendon isometric exercise protocol on involved limb landing biomechanics in individuals with patellar tendinopathy and asymptomatic patellar tendon pathology, and b) determine if individuals with patellar tendinopathy demonstrated changes in pain following a single-dose patellar tendon isometric exercise protocol. DESIGN: Single-blinded randomized cross-over trial. SETTING: Laboratory; PARTICIPANTS: 28 young male athletes with symptomatic (n = 13, age: 19.62 ± 1.61) and asymptomatic (n = 15, age: 21.13 ± 1.88) patellar tendinopathy. MAIN OUTCOME MEASURES: Participants completed a single-dose patellar tendon isometric exercise protocol and a sham-TENS protocol, randomized and separated by 7-10 days. Pain-levels during a single-limb decline squat (SLDS) and three-dimensional biomechanics were collected during a double-limb jump-landing task before and after each intervention protocol. A mixed-model repeated measures ANOVA was conducted to compare change scores for all dependent variables. RESULTS: There were no group × intervention interactions for change in pain (F(1, 26) = 0.555, p = 0.463). There was one significant group × intervention interaction for vertical ground reaction force (VGRF) (F(1, 26) = 5.33, p = 0.029). However, post-hoc testing with Bonferroni correction demonstrated no statistical significance for group (SYM: t = -1.679, p = 0.119; ASYM: t = -1.7, p = 0.107) or intervention condition (isometric: t = -2.58, p = 0.016; sham-TENS: 0.72, p = 0.460). There were no further significant group × intervention interactions (p > 0.05). CONCLUSIONS: A single-dose patellar tendon isometric exercise protocol did not have acute effects on landing biomechanics or pain levels in male athletes with patellar tendinopathy or asymptomatic patellar tendon pathology.

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Published In

Phys Ther Sport

DOI

EISSN

1873-1600

Publication Date

November 2020

Volume

46

Start / End Page

177 / 185

Location

England

Related Subject Headings

  • Young Adult
  • Tendinopathy
  • Sport Sciences
  • Single-Blind Method
  • Patellar Ligament
  • Pain
  • Male
  • Humans
  • Exercise Therapy
  • Cross-Over Studies
 

Citation

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Pietrosimone, L. S., Blackburn, J. T., Wikstrom, E. A., Berkoff, D. J., Docking, S. I., Cook, J., & Padua, D. A. (2020). Landing biomechanics are not immediately altered by a single-dose patellar tendon isometric exercise protocol in male athletes with patellar tendinopathy: A single-blinded randomized cross-over trial. Phys Ther Sport, 46, 177–185. https://doi.org/10.1016/j.ptsp.2020.09.003
Pietrosimone, Laura S., J Troy Blackburn, Erik A. Wikstrom, David J. Berkoff, Sean I. Docking, Jill Cook, and Darin A. Padua. “Landing biomechanics are not immediately altered by a single-dose patellar tendon isometric exercise protocol in male athletes with patellar tendinopathy: A single-blinded randomized cross-over trial.Phys Ther Sport 46 (November 2020): 177–85. https://doi.org/10.1016/j.ptsp.2020.09.003.
Journal cover image

Published In

Phys Ther Sport

DOI

EISSN

1873-1600

Publication Date

November 2020

Volume

46

Start / End Page

177 / 185

Location

England

Related Subject Headings

  • Young Adult
  • Tendinopathy
  • Sport Sciences
  • Single-Blind Method
  • Patellar Ligament
  • Pain
  • Male
  • Humans
  • Exercise Therapy
  • Cross-Over Studies