Similar maximal aerobic capacity but lower energy efficiency during low-to-moderate exercise in women with constitutional thinness: new results from the NUTRILEAN study.

Autor: Verney J; Laboratory of the Metabolic Adaptations to Exercise Under Physiological and Pathological Conditions (AME2P), Clermont Auvergne University, CS 60026, 63178, Aubière Cedex, France. julien.verney@uca.fr., Lambert C; Biostatistics Unit, DRCI, CHU Clermont-Ferrand, 63000, Clermont-Ferrand, France., Isacco L; Laboratory of the Metabolic Adaptations to Exercise Under Physiological and Pathological Conditions (AME2P), Clermont Auvergne University, CS 60026, 63178, Aubière Cedex, France., Beraud D; Laboratory of the Metabolic Adaptations to Exercise Under Physiological and Pathological Conditions (AME2P), Clermont Auvergne University, CS 60026, 63178, Aubière Cedex, France., Boscaro A; Laboratory of the Metabolic Adaptations to Exercise Under Physiological and Pathological Conditions (AME2P), Clermont Auvergne University, CS 60026, 63178, Aubière Cedex, France., Pereira B; Biostatistics Unit, DRCI, CHU Clermont-Ferrand, 63000, Clermont-Ferrand, France., Costes F; Department of Sport Medicine and Functional Explorations, CHU Clermont-Ferrand, CRNH, INRA, University of Clermont Auvergne, 63000, Clermont-Ferrand, France., Rannou F; Department of Sport Medicine and Functional Explorations, CHU Clermont-Ferrand, CRNH, INRA, University of Clermont Auvergne, 63000, Clermont-Ferrand, France., Julian V; Department of Sport Medicine and Functional Explorations, CHU Clermont-Ferrand, CRNH, INRA, University of Clermont Auvergne, 63000, Clermont-Ferrand, France., Duclos M; Department of Sport Medicine and Functional Explorations, CHU Clermont-Ferrand, CRNH, INRA, University of Clermont Auvergne, 63000, Clermont-Ferrand, France., Boirie Y; Department of Clinical Nutrition, CHU Clermont-Ferrand, Diet and Musculoskeletal Health Team, CRNH, INRA, University of Clermont Auvergne, 63000, Clermont-Ferrand, France., Thivel D; Laboratory of the Metabolic Adaptations to Exercise Under Physiological and Pathological Conditions (AME2P), Clermont Auvergne University, CS 60026, 63178, Aubière Cedex, France., Bailly M; Laboratory of the Metabolic Adaptations to Exercise Under Physiological and Pathological Conditions (AME2P), Clermont Auvergne University, CS 60026, 63178, Aubière Cedex, France.
Jazyk: angličtina
Zdroj: European journal of applied physiology [Eur J Appl Physiol] 2024 Jun 21. Date of Electronic Publication: 2024 Jun 21.
DOI: 10.1007/s00421-024-05540-0
Abstrakt: Purpose: Individuals with constitutional thinness have been presented with a lower muscular energy metabolism at the cellular level but their effective aerobic capacities and exercise-related energy efficiency remains unexplored. The present study compares maximal and sub-maximal aerobic capacities between subjects with constitutional thinness and age-matched normal-weight ones.
Methods: Anthropometric measures, body composition (Dual-X-ray absorptiometry), physical activity and sedentary time (GT3x actigraphs), and maximal aerobic capacities (cycling V ˙ O 2peak test) were assessed in 18 constitutionally thin (CT-body mass index < 17.5 kg m -2 ) and 17 normal-weight (NW-body mass index between 20 and 25 kg m -2 ) women. Energy efficiency was assessed during a submaximal cycling test and a walking exercise.
Results: CT had a lower body mass and body mass index compared to NW. Absolute peak oxygen uptake and maximal aerobic power were lower in CT subjects compared to NW (ES: - 1.63 [- 2.40; - 0.86] and - 1.32 [- 2.05; - 0.58], p < 0.001). V ˙ O 2peak related to body mass was not different between groups. Gross and net efficiency (ES: - 0.78 [- 1.48; - 0.06], p = 0.03 and ES: - 0.73 [- 1.43; - 0.01], p = 0.05) were lower in CT compared to NW during the submaximal cycling exercise. The gross energy cost of walking related to body mass was lower in subjects with CT (ES: - 1.80 [- 2.60; - 0.97, p = 0.05), with no difference for the net one. Perceived exertion was similar between groups in responses to both submaximal exercises.
Conclusion: Constitutionally thin women do not show impaired aerobic capacities at moderate to maximal intensities despite lower energy efficiency while cycling and walking at low-to-moderate intensities.
(© 2024. The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature.)
Databáze: MEDLINE
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