Domene Pablo A, Easton Chris
Faculty of Science, Engineering and Computing, Kingston University, Kingston University, Penrhyn Road, Kingston upon Thames, KT1 2EE, UK.
Institute for Clinical Exercise and Health Science, University of the West of Scotland, Hamilton, UK.
J Dance Med Sci. 2014 Mar;18(1):29-36. doi: 10.12678/1089-313X.18.1.29.
The purpose of this study was to value calibrate, cross-validate, and determine the reliability of a combined triaxial accelerometry and heart rate telemetry technique for characterizing the physiological and physical activity parameters of Latin dance. Twenty-two non-professional adult Latin dancers attended two laboratory-based dance trials each. After familiarization and a standardized warm-up, a multi-stage (3 x 5-minute) incremental (based on song tempo) Afro-Cuban salsa choreography was performed while following a video displayed on a projection screen. Data were collected with a portable indirect calorimeter, a heart rate telemeter, and wrist-, hip-, and ankle-mounted ActiGraph GT3X+ accelerometers. Prediction equations for energy expenditure and step count were value calibrated using forced entry multiple regression and cross-validated using a delete-one jackknife approach with additional Bland-Altman analysis. The average dance intensity reached 6.09 ± 0.96 kcal/kg/h and demanded 45.9 ± 11.3% of the heart rate reserve. Predictive ability of the derived models was satisfactory, where R(2) = 0.80; SEE = 0.44 kcal/kg/h and R(2) = 0.74; SEE = 3 step/min for energy expenditure and step count, respectively. Dependent t-tests indicated no differences between predicted and measured values for both energy expenditure (t65 = -0.25, p = 0.80) and step count (t65 = -0.89, p = 0.38). The 95% limits of agreement for energy expenditure and step count were -0.98 to 0.95 kcal/kg/h and -7 to 7 step/min, respectively. Latin dance to salsa music elicits physiological responses representative of moderate to vigorous physical activity, and a wrist-worn accelerometer with simultaneous heart rate measurement constitutes a valid and reliable technique for the prediction of energy expenditure and step count during Latin dance.
本研究的目的是对一种结合三轴加速度测量和心率遥测技术进行赋值校准、交叉验证，并确定其可靠性，以表征拉丁舞的生理和身体活动参数。22名非专业成年拉丁舞舞者每人参加了两次基于实验室的舞蹈试验。在熟悉和标准化热身之后，舞者们在跟随投影屏幕上显示的视频的同时，表演了一个多阶段（3×5分钟）递增（基于歌曲节奏）的非洲古巴萨尔萨舞编排。使用便携式间接热量计、心率遥测仪以及佩戴在手腕、臀部和脚踝处的ActiGraph GT3X+加速度计收集数据。能量消耗和步数的预测方程通过强制进入多元回归进行赋值校准，并使用逐一剔除法交叉验证，同时进行额外的布兰德-奥特曼分析。平均舞蹈强度达到6.09±0.96千卡/千克/小时，需要心率储备的45.9±11.3%。推导模型的预测能力令人满意，能量消耗的R(2)=0.80；标准误=0.44千卡/千克/小时，步数的R(2)=0.74；标准误=3步/分钟。配对t检验表明，能量消耗（t65=-0.25，p=0.80）和步数（t65=-0.89，p=0.38）的预测值与测量值之间均无差异。能量消耗和步数的95%一致性界限分别为-0.98至0.95千卡/千克/小时和-7至7步/分钟。拉丁舞对萨尔萨音乐引发的生理反应代表了中度至剧烈的身体活动，同时测量心率的腕部佩戴式加速度计是预测拉丁舞期间能量消耗和步数的有效且可靠的技术。
