Validity and reliability of cardiorespiratory measurements recorded by the LifeShirt during exercise tests

Lisa Kent, Brenda O'Neill, Gareth Davison, Alan Nevill, J Stuart Elborn, Judy Bradley

Research output: Contribution to journalArticle

43 Citations (Scopus)

Abstract

The LifeShirt is a novel ambulatory monitoring system that records cardio respiratory 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 constant work rate test (65% peak oxygen uptake) on four occasions (>48 In apart) and wore the LifeShirt, COSMED system and Polar Sport Tester simultaneously. The LifeShirt was calibrated using two methods: comparison to a spirometer; and 800 ml fixed-volume bag. Ventilation, respiratory rate, expiratory time and heart rate recorded by the LifeShirt were 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.
Original languageEnglish
Pages (from-to)162-167
JournalRespiratory Physiology and Neurobiology
Volume167
Issue number2
DOIs
Publication statusPublished - 30 Jun 2009

Keywords

  • Calibration
  • Exercise
  • Respiratory inductive plethysmography
  • Respiratory physiology
  • Ambulatory monitoring

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