Download PDF
Int J Sports Med 2015; 36(01): 29-34
DOI: 10.1055/s-0034-1385864
Training & Testing
© Georg Thieme Verlag KG Stuttgart · New York

A Wearable Respiratory Monitoring Device – the Between-Days Variability of Calibration

C. Heyde
1   Albert Ludwigs Universtity Freiburg, Department of Sport and Sport Science, Freiburg, Germany
,
H. Mahler
1   Albert Ludwigs Universtity Freiburg, Department of Sport and Sport Science, Freiburg, Germany
,
K. Roecker
2   Furtwangen University, Applied Public Health, Furtwangen, Germany
,
A. Gollhofer
3   University of Freiburg, Institute of Sport and Sport Sciences, Freiburg, Germany
› Author Affiliations
Further Information

Publication History



accepted after revision 30 May 2014

Publication Date:
25 September 2014 (online)

Also available at
    Permissions and Reprints

Abstract

The between-days variability in ascertained gain factors for calibration of a wearable respiratory inductance plethysmograph (RIP) and validity thereof for the repeated use during exercise were examined. Consecutive 5-min periods of standing still, slow running at 8 km·h-1, fast running at 14 km·h-1 (male) or 12 km·h-1 (female) and recovery were repeated by 10 healthy subjects on 5 days. Breath-by-breath data were recorded simultaneously by flow meter and RIP. Gain factors were determined individually for each trial (CALIND) via least square regression. Reliability and variability in gain factors were quantified respectively by intraclass correlation coefficients (ICC) and limits of agreement. Within a predefined error range of ±20% the amount of RIP-derived tidal volumes after CALIND was compared to corresponding amounts when gain factors of the first trial were applied on the following 4 trials (CALFIRST). ICC ranged within 0.96 and 0.98. The variability in gain factors (up to ± 24.06%) was reduced compensatively by their sum. Amounts of breaths within the predefined error range did not differ between CALIND and (CALFIRST) (P>0.32). The between-days variability of gain factors for a wearable RIP-device does not show impaired reliability in further derived tidal volumes.

Key words

reproducibility - ventilation - running exercise - inductance plethysmography

Supplementary Material

 

  • References

  • 1 Atkinson G, Nevill AM. Statistical methods for assessing measurement error (reliability) in variables relevant to sports medicine. Sports Med 1998; 26: 217-238
    CrossrefPubMedGoogle Scholar
  • 2 Bland JM, Altman DG. Statistical methods for assessing agreement between two methods of clinical measurement. Lancet 1986; 1: 307-310
    PubMedGoogle Scholar
  • 3 Bradley JM, Kent L, O’Neill B, Nevill A, Boyle L, Elborn JS. Cardiorespiratory measurements during field tests in CF: Use of an ambulatory monitoring system. Pediatr Pulmonol 2011; 46: 253-260
    CrossrefPubMedGoogle Scholar
  • 4 Brüllmann G, Fritsch K, Thurnheer R, Bloch KE. Respiratory monitoring by inductive plethysmography in unrestrained subjects using position sensor-adjusted calibration. Respiration 2010; 79: 112-120
    CrossrefPubMedGoogle Scholar
  • 5 Caretti DM, Pullen PV, La Premo, Kuhlmann WD. Reliability of respiratory inductive plethysmography for measuring tidal volume during exercise. Am Ind Hyg Assoc J 1994; 55: 918-923
    CrossrefPubMedGoogle Scholar
  • 6 Chadha TS, Watson H, Birch S, Jenouri GA, Schneider AW, Cohn MA, Sackner MA. Validation of respiratory inductive plethysmography using different calibration procedures. Am Rev Respir Dis 1982; 125: 644-649
    PubMedGoogle Scholar
  • 7 Clarenbach CF, Senn O, Brack T, Kohler M, Bloch KE. Monitoring of ventilation during exercise by a portable respiratory inductive plethysmograph. Chest 2005; 128: 1282-1290
    CrossrefPubMedGoogle Scholar
  • 8 Grossman P, Wilhelm F, Brutsche M. Accuracy of ventilatory measurement employing ambulatory inductive plethysmography during tasks of everyday life. Biol Psychol 2010; 84: 121-128
    CrossrefPubMedGoogle Scholar
  • 9 Harriss DJ, Atkinson G. Ethical standards in sport and exercise science research: 2014 update. Int J Sports Med 2013; 34: 1025-1028
    Article in Thieme ConnectPubMedGoogle Scholar
  • 10 Heyde C, Leutheuser H, Eskofier B, Roecker K, Gollhofer A. Respiratory inductance plethysmography-a rationale for validity during exercise. Med Sci Sports Exerc 2014; 46: 488-495
    CrossrefPubMedGoogle Scholar
  • 11 Hopkins WG. Measures of reliability in sports medicine and science. Sports Med 2000; 30: 1-15
    CrossrefPubMedGoogle Scholar
  • 12 Jones B, Jarvis P, Lewis JA, Ebbutt AF. Trials to assess equivalence: the importance of rigorous methods. BMJ 1996; 313: 36-39
    CrossrefPubMedGoogle Scholar
  • 13 Kent L, O’Neill B, Davison G, Nevill A, Elborn JS, Bradley JM. Validity and reliability of cardiorespiratory measurements recorded by the LifeShirt during exercise tests. Respir Physiol Neurobiol 2009; 167: 162-167
    CrossrefPubMedGoogle Scholar
  • 14 Lafortuna CL, Passerini L. A new instrument for the measurement of rib cage and abdomen circumference variation in respiration at rest and during exercise. Eur J Appl Physiol 1995; 71: 259-265
    CrossrefPubMedGoogle Scholar
  • 15 Nevill AM, Atkinson G. Assessing agreement between measurements recorded on a ratio scale in sports medicine and sports science. Br J Sports Med 1997; 31: 314-318
    CrossrefPubMedGoogle Scholar
  • 16 Sackner JD, Nixon AJ, Davis B, Atkins N, Sackner MA. Non-invasive measurement of ventilation during exercise using a respiratory inductive plethysmograph. I. Am Rev Respir Dis 1980; 122: 867-871
    PubMedGoogle Scholar
  • 17 Wilhelm F, Roth W, Sackner M. The lifeShirt. An advanced system for ambulatory measurement of respiratory and cardiac function. Behav Modif 2003; 27: 671-691
    CrossrefPubMedGoogle Scholar
  • 18 Witt J, Fisher J, Guenette J, Cheong K, Wilson B, Sheel A. Measurement of exercise ventilation by a portable respiratory inductive plethysmograph. Respir Physiol Neurobiol 2006; 154: 389-395
    CrossrefPubMedGoogle Scholar