Increasing walking speed to achieve a pre-training endurance shuttle walk time of 5-10 min may improve test responsiveness in people with chronic obstructive pulmonary disease

Kylie Hill, Yan Ling Chao, Vinicius Cavalheri, L. W. Cindy Ng, Sally L. Wootton, Zoe J. McKeough, Sue C. Jenkins, Peter R. Eastwood, David R. Hillman, Christine Jenkins, Nola Cecins, Lissa M. Spencer, Jennifer A. Alison

Research output: Contribution to journalArticlepeer-review

Abstract

Purpose: The endurance shuttle walk test (ESWT) was used to evaluate ground-based walking training in chronic obstructive pulmonary disease. During pre-training testing, those who walked 5-10 min on the first ESWT with minimal symptoms performed additional ESWTs at increasing speeds until they were at least moderately symptomatic and terminated the test between 5 and 10 min. This report compares participant characteristics and test responsiveness with participants grouped according to whether or not faster walking speeds were selected for the ESWT during pre-training testing. Methods: We conducted a retrospective analysis of data collected in the intervention group during a randomized controlled trial. The intervention was supervised ground-based walking training, performed two to three times/wk, for 8-10 wk. Prior to and immediately following completion of training, participants completed the 6-min walk test (6MWT), incremental shuttle walk test (ISWT), and ESWT. Results: Data were available on 77 participants (70 ± 9 yr, forced expiratory volume in the first second of expiration [FEV1] 43 ± 15 % predicted). For those whom a faster speed was selected during the pre-training ESWTs were characterized by milder dyspnea and leg fatigue on completion of the baseline 6MWT and ISWT (P <.05 for all). On training completion, the change in ESWT was greater in those for whom a faster speed was selected (376 ± 344 sec vs 176 ± 274 sec; P =.017). Conclusions: Participants who report modest symptoms on completion of the pre-training 6MWT or ISWT may achieve a long pre-training ESWT time. In this situation, repeating the pre-training ESWT at a faster walking speed to achieve an exercise time between 5 and 10 min with moderate symptoms may be advantageous.

Original languageEnglish
Pages (from-to)264-266
Number of pages3
JournalJournal of Cardiopulmonary Rehabilitation and Prevention
Volume41
Issue number4
DOIs
Publication statusPublished - Jul 2021
Externally publishedYes

Keywords

  • Chronic obstructive pulmonary disease
  • Exercise training
  • Field walk test
  • Responsiveness

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