Department of Medicine of Sports and Exercise, The Faculty of Kinesiology, University of Zagreb, Horvacanski zavoj 15, 10 000 Zagreb, Croatia.
Eur J Appl Physiol. 2012 Mar;112(3):1183-8. doi: 10.1007/s00421-011-2045-6. Epub 2011 Jun 17.
Multi-sensor body monitors that combine accelerometry with other physiological data are designed to overcome drawbacks of accelerometers in assessing activities with little or no vertical movement. One of such devices is the Sensewear Armband (SWA) which has been extensively validated during various activities. However, very few of the validation studies included activities other than walking and running. The aim of this investigation was to assess the validity of the SWA during recreational in-line skating. Nineteen participants (11 females and 8 males), 28 (±6) years of age, performed in-line skating exercise on a circular track at a self-selected pace. Energy expenditure was measured with the SWA and the Cosmed K4b(2) breath-by-breath portable metabolic unit. The mean (SD) energy expenditure during in-line skating estimated by the SWA [25.5 (5.8) kJ/min] was significantly lower compared with indirect calorimetry [44.2 (9.7) kJ/min, P < 0.001]. Similarly, the mean (SD) MET values recorded by the SWA were also lower compared with IC [5.3 (1.0) METs vs. 9.1 (1.6) METs, P < 0.001]. The ratio limits of agreement suggest that in 95% of cases the SWA will underestimate the energy expenditure and MET values during in-line skating by as much as 24-56% compared with indirect calorimetry. In conclusion, the results of the present study indicate that the SWA is not able to overcome the drawbacks of accelerometry in assessing activities with limited vertical movement.
多传感器身体监测器结合加速度计和其他生理数据设计，旨在克服加速度计在评估垂直运动较少或没有垂直运动的活动时的缺点。其中一种这样的设备是 Sensewear 臂带 (SWA)，它在各种活动中已经得到了广泛的验证。然而，很少有验证研究包括除步行和跑步以外的活动。本研究旨在评估 SWA 在休闲直排轮滑中的有效性。19 名参与者（11 名女性和 8 名男性），28（±6）岁，以自选速度在圆形轨道上进行直排轮滑运动。能量消耗用 SWA 和 Cosmed K4b(2)呼吸便携式代谢单元进行测量。SWA 估计的直排轮滑期间的平均（SD）能量消耗[25.5（5.8）kJ/min]明显低于间接测热法[44.2（9.7）kJ/min，P < 0.001]。同样，SWA 记录的平均（SD）MET 值也低于间接测热法[5.3（1.0）METs 与 9.1（1.6）METs，P < 0.001]。比例一致性界限表明，在 95%的情况下，SWA 相对于间接测热法，将低估直排轮滑期间的能量消耗和 MET 值，低估幅度可达 24-56%。总之，本研究的结果表明，SWA 无法克服加速度计在评估垂直运动有限的活动时的缺点。
