McClenaghan B, Hill S, Koheil R, Okazaki C
Motor Rehabilitation Laboratory, University of South Carolina, Columbia 29208.
Arch Phys Med Rehabil. 1988 Jul;69(7):548-51.
The purpose of this study was to design, construct, and validate an alternative subject/instrument interface to collect metabolic data for individuals who, because of impairment, are unable to use a mouthpiece. An industrial designer directed the development of an interface design which would facilitate subject acceptance. A total of 13 subjects (eight children with cerebral palsy and five nonneurologically impaired) participated in the validation study. Metabolic data were collected at rest and during three levels of exercise, using both the traditional mouthpiece and the interface designed for this study. Exercise intensities were matched for both experimental conditions. Subjects exercised using an electrically braked ergometer configured for arm pedaling. A modification in a Beckman Metabolic Cart allowed for the collection of values with a standard mouthpiece and low-flow interface. Validity of the interface was evaluated using a concurrent, criterion procedure. Correlations of mouthpiece vs interface data during rest and across each exercise level for oxygen consumption were high (r = 0.94 to 0.84; p less than 0.05). Similar results were obtained for carbon dioxide production (r = 0.92 to 0.85; p less than 0.05).
本研究的目的是设计、构建并验证一种替代的受试者/仪器接口，用于为因身体损伤而无法使用咬嘴的个体收集代谢数据。一名工业设计师指导了旨在促进受试者接受度的接口设计开发。共有13名受试者（8名脑瘫儿童和5名无神经损伤者）参与了验证研究。使用传统咬嘴和本研究设计的接口，在静息状态和三个运动水平下收集代谢数据。两种实验条件下的运动强度相匹配。受试者使用配置为手臂蹬踏的电动刹车测力计进行运动。对贝克曼代谢分析仪进行了一项改进，以便使用标准咬嘴和低流量接口收集数据。使用同步标准程序评估接口的有效性。静息状态下以及每个运动水平上咬嘴与接口数据在耗氧量方面的相关性很高（r = 0.94至0.84；p < 0.05）。二氧化碳产生量方面也得到了类似结果（r = 0.92至0.85；p < 0.05）。
