Department Physical Education and Sports, Faculty of Sport Sciences, University of Granada, 18011 Granada, Spain.
Department of Nursing, Physiotherapy and Occupational Therapy, Faculty of Nursing, Group of Preventive Activities in the University Health Sciences Setting, University of Castilla-La Mancha (Universidad de Castilla-La Mancha/UCLM), 02071 Albacete, Spain.
Int J Environ Res Public Health. 2020 Nov 27;17(23):8824. doi: 10.3390/ijerph17238824.
The objective of this study was to establish the reliability of the Humon Hex near-infrared reflectance spectroscopy (NIRS) in determining muscle oxygen saturation (SmO) and hemoglobin concentration (Hgb) at rest and during isometric and dynamic strength exercises using a functional electromechanical dynamometer (FEMD).
The SmO and Hgb values of sixteen healthy adults (mean ± standard deviation (SD): Age = 36.1 ± 6.4 years) were recorded at rest and during isometry (8 s), dynamic strength I (initial load of 40% of the average isometric load, with 2 kg increments until muscle failure) and dynamic strength II (same as I, but with an initial load of 40% of the maximum isometric load) activity. To evaluate the reliability in the determination of SmO and Hgb of this device, intraclass correlation coefficient (ICC), standard error of measurement (SEM) and coefficient of variation (CV) were obtained.
The main results obtained are SmO at rest (CV = 5.76%, SEM = 3.81, ICC = 0.90), isometric strength (CV = 3.03%, SEM = 2.08, ICC = 0.92), dynamic strength I (CV = 10.6, SEM = 7.17, ICC = 0.22) and dynamic strength II (CV = 9.69, SEM = 6.75, ICC = 0.32); Hgb at rest (CV = 1.97%, SEM = 0.24, ICC = 0.65), isometric strength (CV = 0.98%, SEM = 0.12, ICC = 0.96), dynamic strength I (CV = 3.25, SEM = 0.40, ICC = 0.54) and dynamic strength II (CV = 2.74, SEM = 0.34, ICC = 0.65).
The study shows that Humon Hex is a reliable device to obtain SmO and Hgb data in healthy adult subjects at rest and during isometric strength, providing precision for measurements made with this device.
本研究的目的是利用功能型机电测力计（FEMD）建立 Humon Hex 近红外反射光谱（NIRS）在测定静息和等长及动态力量练习时肌肉氧饱和度（SmO）和血红蛋白浓度（Hgb）的可靠性。
十六名健康成年人（平均±标准差（SD）：年龄=36.1±6.4 岁）在静息时以及等长（8 秒）、动态力量 I（初始负荷为平均等长负荷的 40%，每次增加 2 公斤，直至肌肉衰竭）和动态力量 II（与 I 相同，但初始负荷为最大等长负荷的 40%）活动时记录 SmO 和 Hgb 值。为评估该设备测定 SmO 和 Hgb 的可靠性，获得了组内相关系数（ICC）、测量标准误差（SEM）和变异系数（CV）。
主要结果为静息时的 SmO（CV=5.76%，SEM=3.81，ICC=0.90）、等长力量（CV=3.03%，SEM=2.08，ICC=0.92）、动态力量 I（CV=10.6，SEM=7.17，ICC=0.22）和动态力量 II（CV=9.69，SEM=6.75，ICC=0.32）；以及静息时的 Hgb（CV=1.97%，SEM=0.24，ICC=0.65）、等长力量（CV=0.98%，SEM=0.12，ICC=0.96）、动态力量 I（CV=3.25，SEM=0.40，ICC=0.54）和动态力量 II（CV=2.74，SEM=0.34，ICC=0.65）。
该研究表明，Humon Hex 是一种可靠的设备，可在健康成年受试者静息和等长力量时获得 SmO 和 Hgb 数据，为该设备的测量提供精度。
