Jensen M D, Braun J S, Vetter R J, Marsh H M
Endocrine Research-Unit, Mayo Clinic, Rochester, MN 55905.
Mayo Clin Proc. 1988 Sep;63(9):864-8. doi: 10.1016/s0025-6196(12)62688-3.
We conducted studies to determine whether the Mayo whole-body counter could be used to measure body potassium, and thus lean body mass (LBM), and whether moderate obesity alters resting energy expenditure when corrected for LBM. Twenty-four nonobese and 18 moderately obese adults underwent body potassium (40K) counting, as well as tritiated water space measurement and indirect calorimetry. LBM values predicted from 40K counting and tritiated water space measurements were highly correlated (P = 0.001; r = 0.88). Resting energy expenditure was closely related to LBM (P less than 0.0001; r = 0.78): kcal/day = 622 kcal + (LBM.20.0 kcal/kg LBM). In this relationship, the obese subjects did not differ from nonobese subjects. In summary, the Mayo whole-body counter can accurately measure LBM, and moderate obesity has no detectable effect on corrected resting energy expenditure.
我们开展了多项研究，以确定梅奥全身计数器是否可用于测量体内钾含量，进而测定瘦体重（LBM），以及中度肥胖在根据LBM校正后是否会改变静息能量消耗。24名非肥胖成年人及18名中度肥胖成年人接受了体内钾（40K）计数、氚水空间测量及间接量热法检测。通过40K计数和氚水空间测量预测的LBM值高度相关（P = 0.001；r = 0.88）。静息能量消耗与LBM密切相关（P < 0.0001；r = 0.78）：千卡/天 = 622千卡 + （LBM×20.0千卡/千克LBM）。在此关系中，肥胖受试者与非肥胖受试者并无差异。总之，梅奥全身计数器可准确测量LBM，且中度肥胖对校正后的静息能量消耗无明显影响。
