Low-volume strength and endurance training prevent the decrease in exercise hyperemia induced by non-dominant forearm immobilization.

Published

Journal Article

We examined the effect of 3-week upper limb immobilization on conduit artery cross-sectional area and peak hyperemia (BF(peak)) after exhaustive dynamic handgrip exercise (Ex(dyn)), and that of low-volume strength and endurance training during immobilization. Healthy volunteers (n = 21; mean age, 22 years) were divided into 3 groups: immobilization only (IMM; n = 7), immobilization with training (STR + END; n = 7), and control (no immobilization or training, CNT; n = 7). Endurance training comprised Ex(dyn) at 30% maximum voluntary contraction (MVC) (duration of each session, ~60 s; twice weekly). Strength training involved intermittent isometric handgrip exercise at 70% MVC (duration of each session, 40 s; twice weekly), repeated 10 times. We used ultrasound methods to measure the brachial artery cross-sectional area and the BF(peak) after Ex(dyn) for 5 min pre- and post-immobilization. We found a significant group by time interaction in BF(peak) (p < 0.05). A significant decrease was found in BF(peak) in the IMM (p < 0.05) between pre- and post-immobilization and a protective effect in the STR + END. The 3-week upper limb immobilization did not influence the baseline artery cross-sectional area. In conclusion, BF(peak) decreased after 3-week upper limb immobilization and a combination of strength training and endurance training preserved the blunted BF(peak).

Full Text

Duke Authors

Cited Authors

  • Ohmori, F; Hamaoka, T; Shiroishi, K; Osada, T; Murase, N; Kurosawa, Y; Ichimura, S; Homma, T; Esaki, K; Kime, R; Katsumura, T

Published Date

  • November 2010

Published In

Volume / Issue

  • 110 / 4

Start / End Page

  • 845 - 851

PubMed ID

  • 20617333

Pubmed Central ID

  • 20617333

Electronic International Standard Serial Number (EISSN)

  • 1439-6327

Digital Object Identifier (DOI)

  • 10.1007/s00421-010-1566-8

Language

  • eng

Conference Location

  • Germany