Validity and reliability of cardiorespiratory measurements recorded by the LifeShirt during exercise tests
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Abstract
The LifeShirt is a novel ambulatory monitoring system that records cardiorespiratory measurements outside the laboratory. Validity and reliability of cardiorespiratory measurements recorded by the LifeShirt were assessed and two methods of calibrating the LifeShirt were compared. Participants performed an incremental treadmill test and a constantwork rate test (65% peak oxygen uptake) on four occasions (>48 h apart) and wore the LifeShirt, COSMED system and Polar Sport Tester simultaneously. The LifeShirt was calibrated using two methods: comparison to a spirometer; and 800ml fixed-volume bag. Ventilation, respiratory rate, expiratory time and heart rate recorded by the LifeShirtwere compared to measurements recorded by laboratory equipment. Sixteen adults participated (6M:10F); mean (SD) age 23.1 (2.9) years. Agreement between the LifeShirt and laboratory equipment was acceptable. Agreement for ventilation was improved by calibrating the LifeShirt using a spirometer. Reliability was similar for the LifeShirt and the laboratory equipment. This study suggests that the LifeShirt provides a valid and reliable method of ambulatory monitoring.Citation
Respiratory Physiology & Neurobiology 167 (2009) 162–167Publisher
ElsevierJournal
Respiratory Physiology & NeurobiologyAdditional Links
http://www.elsevier.com/locate/resphysiolType
Journal articleLanguage
enISSN
15699048ae974a485f413a2113503eed53cd6c53
10.1016/j.resp.2009.03.013