Acute and delayed effects of concentric and eccentric exercise on quantitative muscle MRI

Szilvia A. Nagy, Márk Váczi, Gábor Perlaki, Gergely Orsi, Zsolt Illés, Péter Bogner

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

Background: Advanced magnetic resonance imaging (MRI) is capable of identifying subtle effects of exercise. However, it is unclear whether it is sensitive enough to differentiate between different contractions. Purpose: To compare the acute and delayed effects of concentric and eccentric exercise on quantitative MRI in hamstring muscles. Material and Methods: Participants performed eccentric and concentric leg curls. Quantitative T2 and magnetization transfer ratio (MTR) maps were calculated in the hamstring complex before exercise, 30 minutes, 24 hours, 7 days, and 14 days after exercise. Results: Compared to baseline, significant MTR reduction (–7.3%) and T2 elevation (72.2%) were observed in the semitendinosus muscle (ST) at 24 hours after eccentric exercise (P = 0.04). Concentric contractions induced T2 elevation in the ST (20.8%) and biceps femoris (5.1%) muscles at 30 minutes after exercise (P = 0.04) which normalized within 24 hours. Conclusions: Longitudinal effects of concentric and eccentric exercise can be detected by both T2 and MTR, but T2 is more sensitive to subtle alterations.

Original languageEnglish
Pages (from-to)902-907
Number of pages6
JournalActa Radiologica
Volume60
Issue number7
DOIs
Publication statusPublished - Jul 1 2019

Keywords

  • Quantitative MRI
  • T2 map
  • concentric exercise
  • eccentric exercise
  • magnetization transfer ratio (MTR)

ASJC Scopus subject areas

  • Radiological and Ultrasound Technology
  • Radiology Nuclear Medicine and imaging

Fingerprint Dive into the research topics of 'Acute and delayed effects of concentric and eccentric exercise on quantitative muscle MRI'. Together they form a unique fingerprint.

  • Cite this