Mondal Himel, Mishra Snigdha Prava
Postgraduate Student, Department of Physiology, Maharaja Krishna Chandra Gajapati Medical College, Ganjam, Odisha, India.
Associate Professor, Department of Physiology, Maharaja Krishna Chandra Gajapati Medical College, Ganjam, Odisha, India.
J Clin Diagn Res. 2017 Jun;11(6):CC17-CC20. doi: 10.7860/JCDR/2017/25465.10039. Epub 2017 Jun 1.
Maximal oxygen consumption (VO) is an important measure of cardiorespiratory capacity of an individual at a given degree of fitness and oxygen availability. Risk of cardiovascular diseases increases with increasing degree of obesity and a low level of VO has been established as an independent risk factor for cardiovascular mortality.
To determine VO in young adults and to find its correlation with Body Mass Index (BMI), Body Fat% and Fat Free Mass (FFM).
Fifty four (male=30, female=24) healthy young adults of age group18-25 years after screening by Physical Activity Readiness Questionnaire (PAR-Q) participated in the study. Height was measured by stadiometer. Weight was measured by digital weighing scale with 0.1 kg sensitivity. Body fat% was measured by Bioelectrical Impedance Analysis (BIA) method. FFM was calculated by subtracting fat mass from the body weight. VO (mL.kg.min) was obtained by Submaximal Exercise Test (SET) by first two stages of Bruce Protocol with the basis of linear relationship between Heart Rate (HR) and oxygen consumption (VO). Data were analysed statistically in GraphPad Prism software version 6.01 for windows.
VO (mL.kg.min) of male (43.25±7.25) was significantly (p<0.001) higher than female (31.65±2.10). BMI showed weak negative correlation (r= -0.3232, p=0.0171) with VO but Body Fat% showed strong negative correlation (r= -0.7505, p<0.001) with VO. FFM positively correlated (r=0.3727, p=0.0055) with VO.
Increased body fat is associated with decreased level of VO in young adults. Obesity in terms of Fat% is a better parameter than BMI for prediction of low VO.
最大摄氧量（VO）是衡量个体在特定健康程度和氧供应情况下心肺功能的一项重要指标。心血管疾病风险会随着肥胖程度的增加而上升，且低水平的VO已被确认为心血管疾病死亡率的一个独立风险因素。
测定年轻成年人的VO，并找出其与体重指数（BMI）、体脂百分比和去脂体重（FFM）之间的相关性。
通过体力活动准备情况问卷（PAR-Q）筛选出54名（男性30名，女性24名）年龄在18至25岁之间的健康年轻成年人参与本研究。身高用身高计测量。体重用灵敏度为0.1千克的数字秤测量。体脂百分比采用生物电阻抗分析（BIA）法测量。FFM通过体重减去脂肪量来计算。VO（毫升·千克·分钟）通过次极量运动试验（SET）获得，采用布鲁斯方案的前两个阶段，基于心率（HR）与氧消耗（VO）之间的线性关系。数据在适用于Windows的GraphPad Prism软件6.01版本中进行统计分析。
男性的VO（毫升·千克·分钟）为（43.25±7.25），显著高于女性（31.65±2.10）（p<0.001）。BMI与VO呈弱负相关（r = -0.3232，p = 0.0171），但体脂百分比与VO呈强负相关（r = -0.7505，p<0.001）。FFM与VO呈正相关（r = 0.3727，p = 0.0055）。
年轻成年人身体脂肪增加与VO水平降低有关。就预测低VO而言，以体脂百分比衡量的肥胖比BMI是一个更好的参数。
