Schairer J R, Kostelnik T, Proffitt S M, Faitel K I, Windeler S, Rickman L B, Brawner C A, Keteyian S J
Cardiovascular Wellness Center, Sinai Health Center, Detroit, MI 48235-2899, USA.
J Cardiopulm Rehabil. 1998 Jul-Aug;18(4):290-4. doi: 10.1097/00008483-199807000-00006.
The purpose of this study was to describe estimated caloric expenditure among patients in a maintenance cardiac rehabilitation program relative to a stated goal of approximately 300 kcal/session or 1,000 kcal/week. Additionally, we assessed the validity of several different methods for estimating caloric expenditure.
The caloric expenditure for an exercise session was evaluated in 30 of 65 patients exercising in a maintenance cardiac rehabilitation program. Patients exercised using a treadmill, dual-action ergometer, upright stepper, or reclining stepper. The kilocalorie expenditure was assessed by three different techniques. The first used liquid crystal display (LCD) readings from the equipment (LCD method), the second combined both the American College of Sports Medicine metabolic equations for treadmill walking and the LCD values from the other equipment (Combined method), and the third measured oxygen consumption (VO2 method).
The caloric expenditure for the LCD, Combined, and VO2 methods were 247 +/- 83, 245 +/- 80, and 230 +/- 88 kcal, respectively. Agreement between methods using intraclass correlation analysis was r = 0.84 (0.68 to 0.92, 95% confidence intervals) for LCD versus VO2 and r = 0.88 (0.77 to 0.94, 95% confidence intervals) for Combined versus VO2 method.
Most patients (83%) in a maintenance cardiac rehabilitation program exercise below 300 kcal per session, a level believed to be necessary to illicit favorable changes in cardiovascular health. Additionally, the Combined method provides a reasonable estimate of kilocalorie expenditure. Use of kilocalorie expenditure should be considered in the cardiac rehabilitation setting as a fourth component in the exercise prescription.
本研究旨在描述维持性心脏康复项目患者的估计热量消耗，并与设定的每次约300千卡或每周1000千卡的目标进行对比。此外，我们评估了几种不同热量消耗估算方法的有效性。
在65名参与维持性心脏康复项目的患者中，对30名患者一次锻炼的热量消耗进行了评估。患者使用跑步机、双功能测力计、直立式踏步机或卧式踏步机进行锻炼。通过三种不同技术评估千卡消耗量。第一种方法使用设备的液晶显示屏（LCD）读数（LCD法），第二种方法结合了美国运动医学学院关于跑步机行走的代谢方程和其他设备的LCD值（联合法），第三种方法测量耗氧量（VO₂法）。
LCD法、联合法和VO₂法的热量消耗分别为247±83千卡、245±80千卡和230±88千卡。使用组内相关分析，LCD法与VO₂法之间的方法一致性r = 0.84（0.68至0.92，95%置信区间），联合法与VO₂法之间的方法一致性r = 0.88（0.77至0.94，95%置信区间）。
在维持性心脏康复项目中，大多数患者（83%）每次锻炼消耗的热量低于300千卡，而这一水平被认为是引发心血管健康产生有利变化所必需的。此外，联合法能合理估算千卡消耗量。在心脏康复环境中，应将千卡消耗量的使用视为运动处方的第四个组成部分。
