Institute of Biochemistry, German Sport University Cologne, Cologne, Germany.
Med Sci Sports Exerc. 2011 Jul;43(7):1328-33. doi: 10.1249/MSS.0b013e31820750f5.
The correct assessment of energy expenditure (EE) in athletes is important to ensure that dietary energy intake is sufficient. In general, athletes are individuals with especially high levels of total EE (TEE) and exercise-related EE (ExEE). The SenseWear Pro3 Armband (SWA) is a multisensor device for the individual assessment of EE, but data on the validity for higher exercise intensities are missing. The aim of the study was to validate the SWA for the assessment of TEE and ExEE in endurance athletes.
The SWA was worn by 14 male endurance athletes for 7 d during a regular training period, and TEE was measured in parallel with the doubly labeled water method. Two controlled exercise trials (treadmill running=2.4-4.8 m·s, stationary bicycling=140-380 W) were performed, during which indirect calorimetry was used to assess ExEE.
TEE assessed with the SWA and TEE measured with the doubly labeled water method were significantly correlated (r=0.73, P<0.01), but there were a proportional bias and considerably wide limits of agreement (-1368 to 1238 kcal·d). The error of TEE assessed with the SWA was related to the athletes' individual lactate thresholds (P<0.05). During running and bicycling, ExEE was significantly underestimated for most exercise intensities, and the underestimation increased with exercise intensity (P<0.001).
According to our results, the SWA does not provide valid results of TEE and ExEE in endurance athletes because of the underestimation of EE at higher exercise intensities. It seems necessary to develop exercise-specific prediction equations to improve EE measurements in athletes.
正确评估运动员的能量消耗（EE）对于确保膳食能量摄入充足非常重要。一般来说，运动员是总 EE（TEE）和与运动相关的 EE（ExEE）水平特别高的个体。SenseWear Pro3 臂带（SWA）是一种用于个体 EE 评估的多传感器设备，但缺乏关于更高运动强度下数据有效性的信息。本研究的目的是验证 SWA 用于评估耐力运动员的 TEE 和 ExEE。
14 名男性耐力运动员在常规训练期间佩戴 SWA 7 天，并同时使用双标记水法测量 TEE。进行了两次受控运动试验（跑步机跑步=2.4-4.8 m·s，固定自行车=140-380 W），在此期间使用间接测热法评估 ExEE。
SWA 评估的 TEE 与双标记水法测量的 TEE 显著相关（r=0.73，P<0.01），但存在比例偏差和相当宽的一致性界限（-1368 至 1238 kcal·d）。SWA 评估的 TEE 误差与运动员个体的乳酸阈值相关（P<0.05）。在跑步和骑自行车时，大多数运动强度下 ExEE 都被显著低估，并且低估程度随着运动强度的增加而增加（P<0.001）。
根据我们的结果，由于在更高运动强度下 EE 被低估，SWA 不能为耐力运动员提供 TEE 和 ExEE 的有效结果。似乎有必要开发特定运动的预测方程，以提高运动员的 EE 测量。
