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Related Concept Videos

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Breathing patterns during eccentric exercise.

J B Lechauve1, H Perrault2, B Aguilaniu3

  • 1Department of Sport Medicine and Functional Explorations, University-Hospital (CHU), Hôpital G. Montpied, Clermont-Ferrand, France; INRA, UMR 1019, CRNH-Auvergne, Clermont-Ferrand, France; University Clermont 1, UFR Médecine, Clermont-Ferrand, France; Department of Rehabilitation and Physical Medicine, University-Hospital (CHU), Hospital G. Montpied, Clermont-Ferrand, France; Clermont University, Blaise Pascal University, Laboratory of Metabolic Adaptations to Exercise in Physiological and Pathological Conditions (AME2P, EA 3533), CRNH Auvergne BP 10448, F-63000 Clermont-Ferrand, France.

Respiratory Physiology & Neurobiology
|August 2, 2014
PubMed
Summary
This summary is machine-generated.

Eccentric cycling is more efficient, requiring less oxygen and ventilation at similar power outputs. However, it may increase arm muscle activity, potentially impacting respiratory mechanics in rehabilitation settings.

Keywords:
Eccentric cyclingElectromyographyOperating lung volumesVentilation

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Area of Science:

  • Exercise Physiology
  • Rehabilitation Science

Background:

  • Eccentric (ECC) exercise is recognized for its higher efficiency compared to concentric (CON) exercise.
  • ECC's potential benefits in rehabilitation warrant a detailed understanding of its physiological demands.

Purpose of the Study:

  • To compare respiratory patterns and electromyographic (EMG) activity during ECC and CON cycling.
  • To evaluate these parameters at matched power outputs and oxygen consumption (VO2).

Main Methods:

  • Eight healthy males performed ECC and CON cycling.
  • Measurements included ventilation (VE), tidal volume (Vt), breathing frequency (Fb), arterial blood gases, and vastus lateralis (VL) and biceps brachii (BB) EMG.

Main Results:

  • At matched mechanical power, ECC cycling showed significantly lower VO2, VE, and VL EMG.
  • At matched VO2, VE was similar, but Vt was lower and Fb higher during ECC cycling.
  • Biceps brachii (BB) EMG was higher during ECC cycling at matched VO2, suggesting potential arm bracing.

Conclusions:

  • ECC cycling demonstrates greater metabolic and muscular efficiency for the primary cycling muscles.
  • Increased upper body muscle activity during ECC cycling may influence respiratory mechanics, necessitating caution in rehabilitation prescriptions.
  • Further research is needed to assess the implications of ECC cycling on dynamic hyperinflation in patient populations.