A Prediction Model for Estimating Pulmonary Oxygen Uptake During the 6-Minute Walk Test in Organ Transplant Recipients

C. R. Tomczak, D. E R Warburton, K. J. Riess, N. G. Jendzjowsky, Y. Liang, Y. Bhambhani, R. G. Haennel, M. J. Haykowsky

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

We developed a multivariate prediction equation for estimating the highest obtainable pulmonary oxygen uptake (V̇O2p) during the 6-minute walk test (6-MWT) in 54 organ transplant recipients: heart/heart-double-lung (n = 14), kidney/kidney-pancreas (n = 16), liver (n = 14), double lung (n = 8), bone marrow (n = 2). They were of age, 48 ± 12 years. Participants performed a 6-MWT during which expired gases were collected and analyzed with a portable metabolic system interfaced with a wireless heart rate monitor. The following variables significantly contributed to the model for predicting the highest obtainable 6-MWT V̇O2p: 6-MWT distance (m), age (years), gender (male = 0, female = 1), resting heart rate, peak heart rate, weight (kg), and transplant type (kidney/kidney-pancreas = 1, other = 0), where: V̇O2p = 1.253 + 0.022 (6-MWT distance) + 0.112 (age) -3.192 (gender) -0.104 (resting heart rate) + 0.127 (peak 6-MWT heart rate) - 0.084 (weight) + 2.116 (transplant type). The explanatory variables in our final model accounted for 78% of the variance in 6-MWT V̇O2p. In conclusion, the addition of an easily estimated 6-MWT V̇O2p will provide added clinical information of functional capacity following an exercise rehabilitation intervention or during routine follow-up for organ transplant recipients.

Original languageEnglish (US)
Pages (from-to)3313-3316
Number of pages4
JournalTransplantation Proceedings
Volume39
Issue number10
DOIs
StatePublished - Dec 2007
Externally publishedYes

Fingerprint

Oxygen
Transplants
Lung
Heart Rate
Kidney
Pancreas
Weights and Measures
Exercise Therapy
Transplant Recipients
Walk Test
Gases
Bone Marrow
Liver

ASJC Scopus subject areas

  • Surgery
  • Transplantation

Cite this

Tomczak, C. R., Warburton, D. E. R., Riess, K. J., Jendzjowsky, N. G., Liang, Y., Bhambhani, Y., ... Haykowsky, M. J. (2007). A Prediction Model for Estimating Pulmonary Oxygen Uptake During the 6-Minute Walk Test in Organ Transplant Recipients. Transplantation Proceedings, 39(10), 3313-3316. https://doi.org/10.1016/j.transproceed.2007.10.004

A Prediction Model for Estimating Pulmonary Oxygen Uptake During the 6-Minute Walk Test in Organ Transplant Recipients. / Tomczak, C. R.; Warburton, D. E R; Riess, K. J.; Jendzjowsky, N. G.; Liang, Y.; Bhambhani, Y.; Haennel, R. G.; Haykowsky, M. J.

In: Transplantation Proceedings, Vol. 39, No. 10, 12.2007, p. 3313-3316.

Research output: Contribution to journalArticle

Tomczak, CR, Warburton, DER, Riess, KJ, Jendzjowsky, NG, Liang, Y, Bhambhani, Y, Haennel, RG & Haykowsky, MJ 2007, 'A Prediction Model for Estimating Pulmonary Oxygen Uptake During the 6-Minute Walk Test in Organ Transplant Recipients', Transplantation Proceedings, vol. 39, no. 10, pp. 3313-3316. https://doi.org/10.1016/j.transproceed.2007.10.004
Tomczak, C. R. ; Warburton, D. E R ; Riess, K. J. ; Jendzjowsky, N. G. ; Liang, Y. ; Bhambhani, Y. ; Haennel, R. G. ; Haykowsky, M. J. / A Prediction Model for Estimating Pulmonary Oxygen Uptake During the 6-Minute Walk Test in Organ Transplant Recipients. In: Transplantation Proceedings. 2007 ; Vol. 39, No. 10. pp. 3313-3316.
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abstract = "We developed a multivariate prediction equation for estimating the highest obtainable pulmonary oxygen uptake (V̇O2p) during the 6-minute walk test (6-MWT) in 54 organ transplant recipients: heart/heart-double-lung (n = 14), kidney/kidney-pancreas (n = 16), liver (n = 14), double lung (n = 8), bone marrow (n = 2). They were of age, 48 ± 12 years. Participants performed a 6-MWT during which expired gases were collected and analyzed with a portable metabolic system interfaced with a wireless heart rate monitor. The following variables significantly contributed to the model for predicting the highest obtainable 6-MWT V̇O2p: 6-MWT distance (m), age (years), gender (male = 0, female = 1), resting heart rate, peak heart rate, weight (kg), and transplant type (kidney/kidney-pancreas = 1, other = 0), where: V̇O2p = 1.253 + 0.022 (6-MWT distance) + 0.112 (age) -3.192 (gender) -0.104 (resting heart rate) + 0.127 (peak 6-MWT heart rate) - 0.084 (weight) + 2.116 (transplant type). The explanatory variables in our final model accounted for 78{\%} of the variance in 6-MWT V̇O2p. In conclusion, the addition of an easily estimated 6-MWT V̇O2p will provide added clinical information of functional capacity following an exercise rehabilitation intervention or during routine follow-up for organ transplant recipients.",
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AU - Jendzjowsky, N. G.

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AU - Bhambhani, Y.

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