Please use this identifier to cite or link to this item: https://ahro.austin.org.au/austinjspui/handle/1/28114
Title: Physiological Responses During Field Walking Tests in Adults with Bronchiectasis.
Austin Authors: Corso, Simone Dal;Boldorini, Jacqueline C;de Camargo, Anderson A;José, Anderson;Rached, Samia Z;Athanazio, Rodrigo A;Stelmach, Rafael;Holland, Anne E 
Affiliation: Institute for Breathing and Sleep
Postgraduate Program in Rehabilitation Sciences, Universidade Nove de Julho, São Paulo, Brazil..
Department of Physiotherapy, Alfred Health, Melbourne, Australia..
Discipline of Physiotherapy, La Trobe University, Melbourne, Australia..
Pulmonary Division, Heart Institute, Hospital das Clinicas da Faculdade de Medicina da Universidade de São Paulo, São Paulo, Brazil..
Issue Date: May-2020
Date: 2020-01-28
Publication information: Respiratory care 2020-05; 65(5): 618-624
Abstract: Field walking tests are commonly used in patients with chronic pulmonary diseases for assessment of functional capacity. However, the physiological demands and magnitude of desaturation on 6-min walk test (6MWT), incremental shuttle walk test (ISWT), and endurance shuttle walk test (ESWT) have not been investigated in patients with bronchiectasis. The objective of this study was to compare the physiological responses and the magnitude of desaturation of subjects with bronchiectasis when performing the 6MWT, ISWT, and ESWT. Thirty-two subjects underwent the 6MWT, ISWT, and ESWT on 3 different days. Pulmonary gas exchange, heart rate, and [Formula: see text] were measured in all tests. There were no differences in the peak rate of oxygen uptake, ventilation, dyspnea, and leg fatigue between the tests. Equivalent cardiac demand (ie, heart rate at peak) was observed with the 6MWT (137 ± 21 beats/min) and the ESWT (142 ± 21 beats/min), but this was lower in the ISWT (135 ± 19 beats/min) compared to ESWT (P < .05). Most subjects achieved a vigorous exercise intensity (heart rate of 70-90% of predicted) in all tests. There was no difference in desaturation among the tests (6MWT: -6.8 ± 6.6%, ISWT: -6.1 ± 6.0%, and ESWT: -7.0 ± 5.4%). The 6MWT, ISWT, and ESWT induced similar physiological responses at the peak of exercise, eliciting a vigorous exercise intensity. The magnitude of desaturation was similar across tests. This means these tests can be used interchangeably for evaluation of exercise-induced desaturation.
URI: https://ahro.austin.org.au/austinjspui/handle/1/28114
DOI: 10.4187/respcare.07171
ORCID: 0000-0003-2061-845X
Journal: Respiratory care
PubMed URL: 31992670
PubMed URL: https://pubmed.ncbi.nlm.nih.gov/31992670/
Type: Journal Article
Subjects: bronchiectasis
exercise test
oxygen consumption
oxygen saturation
rehabilitation
walk test
Appears in Collections:Journal articles

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