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Published in: BMC Pulmonary Medicine 1/2014

Open Access 01-12-2014 | Research article

Metabolic load during strength training or NMES in individuals with COPD: results from the DICEStrial

Authors: Maurice JH Sillen, Frits ME Franssen, Anouk W Vaes, Jeannet ML Delbressine, Emiel FM Wouters, Martijn A Spruit

Published in: BMC Pulmonary Medicine | Issue 1/2014

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Abstract

Background

Strength training and neuromuscular electrical stimulation (NMES) are effective training modalities for improving muscle function, exercise performance and health status in individuals with COPD. The aim of the present study was to analyze the metabolic load of these training modalities at baseline, half-way, and at the end of an eight-week interdisciplinary pulmonary rehabilitation program in a subgroup of individuals with COPD of the DICES trial.

Methods

Of 24 individuals with COPD (FEV1: 34 ± 2% predicted, men: 58%, age: 66 (61–68) years), peak oxygen uptake (VO2), peak minute ventilation (VE), heart rate, oxygen saturation and symptom scores were assessed during HF-NMES (75 Hz), LF-NMES (15 Hz) and strength training at three moments during their pulmonary rehabilitation program.

Results

Intervention-related peak VO2 did not change over time during HF-NMES, LF-NMES or strength training. Intervention-related peak VE did not change over time during strength training or LF-NMES and increased slightly, but significantly over time during HF-NMES. Peak VO2 and VE were significantly higher during strength training compared to HF-NMES or LF-NMES. Oxygen saturation significantly decreased after the first measurements during HF-NMES and strength training group to baseline, while no significant changes in oxygen saturation were observed during the other measurements. Heart rate significantly increased compared to baseline in all groups at all moments and was significantly higher after strength training compared to HF-NMES or LF-NMES. Median end scores (points) for dyspnea, fatigue and muscle pain ranged from 1 to 3, from 0.5 to 2 and from 0 to 6 after HF-NMES, from 2 to 3, from 2 to 5 and from 0 to 9 after LF-NMES and from 2 to 5, from 1.5 to 4 and from 0 to 28 after strength training respectively.

Conclusions

To conclude, the metabolic load and symptom scores remain acceptable low over time with increasing training loads during HF-NMES, LF-NMES or strength training.

Trial registration

Trial registration: NTR2322
Appendix
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Metadata
Title
Metabolic load during strength training or NMES in individuals with COPD: results from the DICEStrial
Authors
Maurice JH Sillen
Frits ME Franssen
Anouk W Vaes
Jeannet ML Delbressine
Emiel FM Wouters
Martijn A Spruit
Publication date
01-12-2014
Publisher
BioMed Central
Published in
BMC Pulmonary Medicine / Issue 1/2014
Electronic ISSN: 1471-2466
DOI
https://doi.org/10.1186/1471-2466-14-146

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