Enhanced physiological tremor deteriorates plantar flexor torque steadiness after bed rest

E.R. Mulder; A.M.H. Horstman; H.L. Gerrits; M Massa; B Kleine; A. de Haan; D.L. Belavy; D. Felsenberg; M. Zwarts; D.F. Stegeman

doi:10.1016/j.jelekin.2010.10.009

Enhanced physiological tremor deteriorates plantar flexor torque steadiness after bed rest

E.R. Mulder, A.M.H. Horstman, H.L. Gerrits, M Massa, B Kleine, A. de Haan, D.L. Belavy, D. Felsenberg, M. Zwarts, D.F. Stegeman

Research output: Contribution to Journal › Article › Academic › peer-review

Abstract

This study evaluated the effectiveness of resistance training to preserve submaximal plantar flexor (PF) torque steadiness following 60days of bed rest (BR). Twenty-two healthy male subjects underwent either BR only (CTR, n=8), or BR plus resistance training (RT, n=14). The magnitude of torque fluctuations during steady submaximal isometric PF contractions (20%, 40%, 60% and 80% of maximum) were assessed before and after BR. Across contraction intensities, torque fluctuations (coefficient of variation, CV) increased more (P<0.05) after BR for CTR (from 0.31±0.10 to 0.92±0.63; P<0.001), than for RT (from 0.30±0.09 to 0.54±0.27; P<0.01). A shift in the spectral content of torque fluctuations towards increased rhythmic activity between 6.5 and 20Hz was observed in CTR only (P<0.05). H-reflex amplitude (H

Original language	English
Pages (from-to)	384-393
Number of pages	10
Journal	Journal of Electromyography and Kinesiology
Volume	21
Issue number	2
DOIs	https://doi.org/10.1016/j.jelekin.2010.10.009
Publication status	Published - 2011

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title = "Enhanced physiological tremor deteriorates plantar flexor torque steadiness after bed rest",

abstract = "This study evaluated the effectiveness of resistance training to preserve submaximal plantar flexor (PF) torque steadiness following 60days of bed rest (BR). Twenty-two healthy male subjects underwent either BR only (CTR, n=8), or BR plus resistance training (RT, n=14). The magnitude of torque fluctuations during steady submaximal isometric PF contractions (20%, 40%, 60% and 80% of maximum) were assessed before and after BR. Across contraction intensities, torque fluctuations (coefficient of variation, CV) increased more (P<0.05) after BR for CTR (from 0.31±0.10 to 0.92±0.63; P<0.001), than for RT (from 0.30±0.09 to 0.54±0.27; P<0.01). A shift in the spectral content of torque fluctuations towards increased rhythmic activity between 6.5 and 20Hz was observed in CTR only (P<0.05). H-reflex amplitude (H",

author = "E.R. Mulder and A.M.H. Horstman and H.L. Gerrits and M Massa and B Kleine and {de Haan}, A. and D.L. Belavy and D. Felsenberg and M. Zwarts and D.F. Stegeman",

year = "2011",

doi = "10.1016/j.jelekin.2010.10.009",

language = "English",

volume = "21",

pages = "384--393",

journal = "Journal of Electromyography and Kinesiology",

issn = "1050-6411",

publisher = "Elsevier Limited",

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TY - JOUR

T1 - Enhanced physiological tremor deteriorates plantar flexor torque steadiness after bed rest

AU - Mulder, E.R.

AU - Horstman, A.M.H.

AU - Gerrits, H.L.

AU - Massa, M

AU - Kleine, B

AU - de Haan, A.

AU - Belavy, D.L.

AU - Felsenberg, D.

AU - Zwarts, M.

AU - Stegeman, D.F.

PY - 2011

Y1 - 2011

N2 - This study evaluated the effectiveness of resistance training to preserve submaximal plantar flexor (PF) torque steadiness following 60days of bed rest (BR). Twenty-two healthy male subjects underwent either BR only (CTR, n=8), or BR plus resistance training (RT, n=14). The magnitude of torque fluctuations during steady submaximal isometric PF contractions (20%, 40%, 60% and 80% of maximum) were assessed before and after BR. Across contraction intensities, torque fluctuations (coefficient of variation, CV) increased more (P<0.05) after BR for CTR (from 0.31±0.10 to 0.92±0.63; P<0.001), than for RT (from 0.30±0.09 to 0.54±0.27; P<0.01). A shift in the spectral content of torque fluctuations towards increased rhythmic activity between 6.5 and 20Hz was observed in CTR only (P<0.05). H-reflex amplitude (H

AB - This study evaluated the effectiveness of resistance training to preserve submaximal plantar flexor (PF) torque steadiness following 60days of bed rest (BR). Twenty-two healthy male subjects underwent either BR only (CTR, n=8), or BR plus resistance training (RT, n=14). The magnitude of torque fluctuations during steady submaximal isometric PF contractions (20%, 40%, 60% and 80% of maximum) were assessed before and after BR. Across contraction intensities, torque fluctuations (coefficient of variation, CV) increased more (P<0.05) after BR for CTR (from 0.31±0.10 to 0.92±0.63; P<0.001), than for RT (from 0.30±0.09 to 0.54±0.27; P<0.01). A shift in the spectral content of torque fluctuations towards increased rhythmic activity between 6.5 and 20Hz was observed in CTR only (P<0.05). H-reflex amplitude (H

U2 - 10.1016/j.jelekin.2010.10.009

DO - 10.1016/j.jelekin.2010.10.009

M3 - Article

SN - 1050-6411

VL - 21

SP - 384

EP - 393

JO - Journal of Electromyography and Kinesiology

JF - Journal of Electromyography and Kinesiology

IS - 2

ER -

Enhanced physiological tremor deteriorates plantar flexor torque steadiness after bed rest

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