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Effects of eccentric vs concentric cycling training on patients with moderate COPD

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Abstract

Purpose

The present study compared the effects of eccentric cycling (ECC) and conventional concentric cycling (CONC) training on muscle function, body composition, functional performance, and quality of life (QOL) of patients with moderate chronic obstructive pulmonary disease (COPD).

Methods

Twenty patients (age: 69.6 ± 10.1 years, forced expiratory volume in 1-s: 73.2 ± 11.4% of predicted) were randomly allocated to ECC (n = 10) or CONC (n = 10) group. They performed 12 weeks of ECC or CONC training at similar perceived exertion. The workload, heart rate (HR), blood oxygen saturation (SpO2), and dyspnea were monitored during cycling. Outcomes measures included maximal voluntary isometric contraction (MVC) strength of the knee extensors, rate of force development (RFD), lower limb fat-free (LLFFM) and fat (LLFM) mass, 6-min walking test (6MWT), timed up-and-go test (TUG), stairs ascending (SAWT) and descending walking time (SDWT), and QOL assessed by the Saint George's respiratory questionnaire.

Results

ECC produced on average threefold greater (P < 0.001) workload (211.8 ± 106.0 kJ) than CONC (78.1 ± 62.6 kJ) over 34 training sessions. ECC showed 1.5 ± 2.1% greater SpO2, 24.7 ± 4.1% lower HR, and 64.4 ± 29.6% lower dyspnea in average than CONC (P < 0.001). ECC increased LLFFM (4.5 ± 6.2%; P = 0.03), while CONC decreased LLFM (3.3 ± 6.4%; P = 0.04) after training. Both ECC and CONC reduced (P < 0.05) SAWT (− 16.1 ± 9.3% vs − 10.1 ± 14.4%) and SDWT (− 12.2 ± 12.6% vs − 14.4 ± 14.7%), and improved (P < 0.05) QOL (33.4 ± 38.8 vs 26.1 ± 36.6%) similarly, but only ECC improved (P < 0.05) RFD (69–199%), TUG (13.6 ± 13.6%), and 6MWT (25.3 ± 27.7%).

Conclusion

These results suggest that ECC training with less cardio-pulmonary demands was more effective in increasing functional performance and muscle mass for COPD patients than CONC training.

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Abbreviations

6MWT:

Six-minute walking test

ANOVA:

Analysis of variance

ATP:

Adenosine triphosphate

CONC:

Concentric cycling

COPD:

Chronic obstructive pulmonary disease

DEXA:

Dual-energy X-ray absorptiometry

DOMS:

Delayed onset muscle soreness

ECC:

Eccentric cycling

ES:

Effect size

FEV1 :

Forced expiratory air volume in the first second

FVC:

Forced vital capacity

GOLD:

Global initiative for chronic obstructive lung disease

HR:

Heart rate

kJ:

Kilojoule

LLFFM:

Lower limb fat-free mass

LLFM:

Lowe limb fat mass

LSD:

Fisher's least significance difference

MAP:

Maximal aerobic power

MVC:

Maximal voluntary isometric contraction

PO:

Power output

QOL:

Quality of life

RFD:

Rate of force development

RFD50 :

Rate of force Development at 50 ms

RDF100 :

Rate of force development at 100 ms

RPE:

Rating of perceived exertion

rpm:

Revolutions per minute

SAWT:

Stairs ascending walking time

SDWT:

Stairs descending walking time

SGRQ:

Saint George’s respiratory questionnaire for COPD patients

SpO2 :

Blood oxygen saturation

TUG:

Timed up-and-go test

VAS:

Visual analog scale

VO2peak :

Peak oxygen consumption

References

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Funding

This work was funded by research grant awarded to L.P. (#11150293) by CONICYT of Chile.

Author information

Authors and Affiliations

Authors

Contributions

The manuscript was drafted and written by MI, OV, KN, and LP. GT, ON, and MK conducted the exercise protocols. LP performed the statistical analysis. MI, OV, KN, and LP reviewed the final manuscript and contributed to the discussion. LP planned the overall experimental design. All authors have contributed parts of it, as well as read and edited the final submitted version.

Corresponding author

Correspondence to Luis Peñailillo.

Ethics declarations

Conflict of interest

There were no conflicts of interest.

Ethical approval

A written informed consent was obtained from all participants. The study was approved by the Institutional Ethics Committee and Eastern Metropolitan Health Service of the city (clinical trial registration number: DRKS00009755) and conducted according to the Helsinki declaration.

Additional information

Communicated by William J. Kraemer.

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Inostroza, M., Valdés, O., Tapia, G. et al. Effects of eccentric vs concentric cycling training on patients with moderate COPD. Eur J Appl Physiol 122, 489–502 (2022). https://doi.org/10.1007/s00421-021-04850-x

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  • DOI: https://doi.org/10.1007/s00421-021-04850-x

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