School of Exercise and Nutritional Sciences, San Diego State University, San Diego, United States.
Int J Sports Med. 2020 Jul;41(8):505-511. doi: 10.1055/a-1088-5629. Epub 2020 Mar 16.
The objective of this study was to investigate the validity of measured caloric expenditure from a fitness smartwatch designed to measured values in wheelchair users against criterion values from a portable metabolic system. 15 wheelchair users and 15 able-bodied participants completed multiple tasks; wheelchair treadmill routine at 30, 45, and 60 strokes per minute, arm cycle ergometry at 45, 60, and 80 revolutions per minute, and arm cycle ergometry VOPeak test. There were no interactions for device or task and group (wheelchair users vs. able bodied, p=0.375-0.944) therefore results were pooled across groups for all measures. The smartwatch exhibited poor to moderate caloric expenditure association during wheelchair treadmill routine (ICC<0.39) and arm cycle ergometry (ICC<0.541). Smartwatch underestimated caloric expenditure during the wheelchair treadmill task (Mean differences (Limits of Agreement)) (-2.11 (-8.19-3.96), -3.68 (-12.64-5.28), and -4.51 (-15.05-6.02)) and overestimated during the arm cycle ergometry task (0.89 (-3.10-4.88), 3.40 (-0.31-7.12), and 2.81 (-1.71-7.32)). The smartwatch is currently not well suited to calculate caloric expenditure when performing exercise tasks on a wheelchair treadmill and arm cycle ergometry.
本研究旨在探究一款旨在测量轮椅使用者热量消耗值的健身智能手表与便携式代谢系统的测量值相比，其在测量轮椅使用者热量消耗值时的有效性。15 名轮椅使用者和 15 名健全参与者完成了多项任务，包括在 30、45 和 60 划/分钟的轮椅跑步机常规训练、45、60 和 80 转/分钟的手臂循环测功计和手臂循环测功计 VOPeak 测试。由于设备或任务与组之间没有交互作用（轮椅使用者与健全者，p=0.375-0.944），因此所有测量结果均在组间进行了汇总。智能手表在轮椅跑步机常规训练（ICC<0.39）和手臂循环测功计（ICC<0.541）中显示出较差到中等的热量消耗相关性。智能手表在轮椅跑步机任务中低估了热量消耗（均值差异（界限协议））（-2.11（-8.19-3.96），-3.68（-12.64-5.28）和-4.51（-15.05-6.02）），而在手臂循环测功计任务中则高估了热量消耗（0.89（-3.10-4.88），3.40（-0.31-7.12）和 2.81（-1.71-7.32））。目前，智能手表不太适合在轮椅跑步机和手臂循环测功计上进行运动任务时计算热量消耗。
