Fat mass is negatively associated with the physiological ability of tissue to consume oxygen

Motriz. Revista de Educacao Fisica

Lira, Claudio A. B. de¹  Vargas, Valentine Z.²  Vancini, Rodrigo L.³ 

[1] Universidade Federal de Goiás, Goiânia, Brazil;Universidade Federal de São Paulo, São Paulo, Brazil;Universidade Federal do Espírito Santo, Vitória, Brazil

关键词: aerobic physical fitness;    body composition;    peak oxygen uptake;    obesity;    fat free mass.;   

DOI  :  10.1590/s1980-6574201800040010

学科分类：社会科学、人文和艺术（综合）

来源: Universidade Estadual Paulista "Julio de Mesquita Filho" * Departamento de Educacao Fisica

【 摘 要 】

Aims:To describe the relationship between variables related to body composition and peak oxygen uptake ( V ˙O 2peak) and to verify whether fat mass can affect these relationships.Methods:Eighty participants underwent cardiopulmonary exercise testing to measureV ˙O 2peak and a body composition assessment to measure fat mass, fat free mass (FFM), and total body mass (BM).Results:There were significant relationships betweenV ˙O 2peak relative to FFM (fat free mass) (mL/kgFFM/min) and absolute fat mass (kg) (r=-0.50, p<0.001) and relative fat mass (%) (r=-0.56, p<0.001). AbsoluteV ˙O 2peak (L/min) had a high positive relationship with FFM (r=0.83, p<0.0001); the relationship betweenV ˙O 2peak (L/min) and FFM remained high and positive even when accounting for absolute fat mass (kg) (r=0.83, p<0.001).V ˙O 2peak relative to total body mass (mL/kgBM/min) showed a high negative relationship with relative fat mass (%) (r=-0.89, p<0.001) and a positive relationship with fat free mass (kg) (r=0.57, p<0.001), which did not change when accounting for fat mass (kg) (r=0.56, p<0.001).Conclusion:These data indicate that the physiological ability of tissue to consume oxygen ( V ˙O 2peak in mL/kgFFM/min) is negatively associated with fat mass. Moreover, the individual’s cardiorespiratory capacity to transport oxygen for working muscles ( V ˙O 2peak in L/min) is strongly related to absolute FFM, and this association is not affected by fat mass. Finally, a better body mass composition (high FFM and low fat mass) is important for aerobic physical fitness ( V ˙O 2peak in mL/kgBM/min) and improved physiological ability of tissue to consume oxygen ( V ˙O 2peak in mL/kgFFM/min).

【 授权许可】

CC BY