DE Campos João Octavio R P, Ribeiro Felipe A, Luches-Pereira Gabriel, Papoti Marcelo
School of Physical Education and Sport of Ribeirao Preto, University of Sao Paulo, Ribeirao Preto, SP, BRAZIL.
Ribeirao Preto Medical School, University of Sao Paulo, Ribeirao Preto, SP, BRAZIL.
Int J Exerc Sci. 2024 May 1;17(6):670-681. doi: 10.70252/SIYZ1237. eCollection 2024.
Smartpaddle is a novel wearable device based on inertial measurement units (IMU) for in-field arm-stroke kinetics and kinematics analysis in swimming. However, the lack of data regarding its agreement and reliability, coupled with restricted access to raw data, emphasizes the need to evaluate it against a well-established strain gauge (SG) reference method for assessing swimming forces. Thus, this study aimed to investigate the agreement and reliability between the Smartpaddle and strain gauge in a 30-s all-out arms-only tethered swimming test. Twelve trained young adult swimmers performed a test-retest 30-s all-out arms-only tethered swimming trial. Peak and mean forces were obtained from IMU (PF and MF) and SG (PF and MF) simultaneously. Statistical differences and correlations were found in both peak (PF = 158.46 ± 48.85 N, PF = 75.47 ± 12.05 N, < 0.001, = 0.88) and mean (MF = 69.62 ± 16.36 N, MF = 30.06 ± 5.42 N, < 0.001, = 0.84) forces between devices, presenting elevated systematic errors for both variables. No differences were found in IMU data between test-retest conditions in both peak (PF = 75.47 ± 12.05 N, PF = 75.45 ± 11.54 N, = 0.99, ICC = 0.96) and mean (MF = 30.06 ± 5.42 N, MF = 30.21 ± 5.83 N, = 0.80, ICC = 0.95) forces, with negligible systematic errors. In conclusion, although the Smartpaddle® device is not directly comparable to the strain gauge reference method, it has demonstrated high reliability levels in test-retest trials.
智能划水板是一种基于惯性测量单元（IMU）的新型可穿戴设备，用于现场分析游泳时手臂划水的动力学和运动学。然而，由于缺乏关于其一致性和可靠性的数据，再加上难以获取原始数据，因此有必要将其与一种成熟的应变片（SG）参考方法进行对比，以评估游泳力量。因此，本研究旨在调查在30秒全力仅靠手臂的系绳游泳测试中，智能划水板与应变片之间的一致性和可靠性。12名训练有素的年轻成年游泳者进行了一次重测的30秒全力仅靠手臂的系绳游泳试验。同时从IMU（峰值力和平均力）和SG（峰值力和平均力）获取峰值力和平均力。在两种设备的峰值力（峰值力 = 158.46 ± 48.85牛，峰值力 = 75.47 ± 12.05牛，<0.001，= 0.88）和平均力（平均力 = 69.62 ± 16.36牛，平均力 = 30.06 ± 5.42牛，<0.001，= 0.84）方面均发现了统计学差异和相关性，两个变量均存在较高的系统误差。在重测条件下，IMU数据在峰值力（峰值力 = 75.47 ± 12.05牛，峰值力 = 75.45 ± 11.54牛，= 0.99，组内相关系数 = 0.96）和平均力（平均力 = 30.06 ± 5.42牛，平均力 = 30.21 ± 5.83牛，= 0.80，组内相关系数 = 0.95）方面均未发现差异，系统误差可忽略不计。总之，尽管智能划水板设备不能直接与应变片参考方法进行比较，但它在重测试验中显示出了较高的可靠性水平。
