Physical activity monitoring: addressing the difficulties of accurately detecting slow walking speeds

Samantha L Harrison; Elizabeth J Horton; Robert David Smith; Carolyn J Sandland; Michael C Steiner; Mike D L Morgan; Sally J Singh

doi:10.1016/j.hrtlng.2013.06.004

Physical activity monitoring: addressing the difficulties of accurately detecting slow walking speeds

Samantha L Harrison, Elizabeth J Horton, Robert David Smith, Carolyn J Sandland, Michael C Steiner, Mike D L Morgan, Sally J Singh

Health Sciences

Research output: Contribution to journal › Article › peer-review

Abstract

OBJECTIVE: To test the accuracy of a multi-sensor activity monitor (SWM) in detecting slow walking speeds in patients with chronic obstructive pulmonary disease (COPD).

BACKGROUND: Concerns have been expressed regarding the use of pedometers in patient populations. Although activity monitors are more sophisticated devices, their accuracy at detecting slow walking speeds common in patients with COPD has yet to be proven.

METHODS: A prospective observational study design was employed. An incremental shuttle walk test (ISWT) was completed by 57 patients with COPD wearing an SWM. The ISWT was repeated by 20 patients wearing the same SWM.

RESULTS: Differences were identified between metabolic equivalents (METS) and between step-count across five levels of the ISWT (p < 0.001). Good within monitor reproducibility between two ISWT was identified for total energy expenditure and step-count (p < 0.001).

CONCLUSIONS: The SWM is able to detect slow (standardized) speeds of walking and is an acceptable method for measuring physical activity in individuals disabled by COPD.

Original language	English
Pages (from-to)	361-364.e1
Number of pages	5
Journal	Heart & lung
Volume	42
Issue number	5
Early online date	31 Aug 2013
DOIs	https://doi.org/10.1016/j.hrtlng.2013.06.004
Publication status	Published - 4 Sept 2013

Bibliographical note

Keywords

Aged
Energy Metabolism
Exercise Test
Female
Forced Expiratory Volume
Humans
Male
Metabolic Equivalent
Middle Aged
Monitoring, Ambulatory
Prospective Studies
Pulmonary Disease, Chronic Obstructive
Reproducibility of Results
Walking

Access to Document

10.1016/j.hrtlng.2013.06.004

Cite this

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title = "Physical activity monitoring: addressing the difficulties of accurately detecting slow walking speeds",

abstract = "OBJECTIVE: To test the accuracy of a multi-sensor activity monitor (SWM) in detecting slow walking speeds in patients with chronic obstructive pulmonary disease (COPD).BACKGROUND: Concerns have been expressed regarding the use of pedometers in patient populations. Although activity monitors are more sophisticated devices, their accuracy at detecting slow walking speeds common in patients with COPD has yet to be proven.METHODS: A prospective observational study design was employed. An incremental shuttle walk test (ISWT) was completed by 57 patients with COPD wearing an SWM. The ISWT was repeated by 20 patients wearing the same SWM.RESULTS: Differences were identified between metabolic equivalents (METS) and between step-count across five levels of the ISWT (p < 0.001). Good within monitor reproducibility between two ISWT was identified for total energy expenditure and step-count (p < 0.001).CONCLUSIONS: The SWM is able to detect slow (standardized) speeds of walking and is an acceptable method for measuring physical activity in individuals disabled by COPD.",

keywords = "Aged, Energy Metabolism, Exercise Test, Female, Forced Expiratory Volume, Humans, Male, Metabolic Equivalent, Middle Aged, Monitoring, Ambulatory, Prospective Studies, Pulmonary Disease, Chronic Obstructive, Reproducibility of Results, Walking",

author = "Harrison, {Samantha L} and Horton, {Elizabeth J} and Smith, {Robert David} and Sandland, {Carolyn J} and Steiner, {Michael C} and Morgan, {Mike D L} and Singh, {Sally J}",

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doi = "10.1016/j.hrtlng.2013.06.004",

language = "English",

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T2 - addressing the difficulties of accurately detecting slow walking speeds

AU - Harrison, Samantha L

AU - Horton, Elizabeth J

AU - Smith, Robert David

AU - Sandland, Carolyn J

AU - Steiner, Michael C

AU - Morgan, Mike D L

AU - Singh, Sally J

PY - 2013/9/4

Y1 - 2013/9/4

N2 - OBJECTIVE: To test the accuracy of a multi-sensor activity monitor (SWM) in detecting slow walking speeds in patients with chronic obstructive pulmonary disease (COPD).BACKGROUND: Concerns have been expressed regarding the use of pedometers in patient populations. Although activity monitors are more sophisticated devices, their accuracy at detecting slow walking speeds common in patients with COPD has yet to be proven.METHODS: A prospective observational study design was employed. An incremental shuttle walk test (ISWT) was completed by 57 patients with COPD wearing an SWM. The ISWT was repeated by 20 patients wearing the same SWM.RESULTS: Differences were identified between metabolic equivalents (METS) and between step-count across five levels of the ISWT (p < 0.001). Good within monitor reproducibility between two ISWT was identified for total energy expenditure and step-count (p < 0.001).CONCLUSIONS: The SWM is able to detect slow (standardized) speeds of walking and is an acceptable method for measuring physical activity in individuals disabled by COPD.

AB - OBJECTIVE: To test the accuracy of a multi-sensor activity monitor (SWM) in detecting slow walking speeds in patients with chronic obstructive pulmonary disease (COPD).BACKGROUND: Concerns have been expressed regarding the use of pedometers in patient populations. Although activity monitors are more sophisticated devices, their accuracy at detecting slow walking speeds common in patients with COPD has yet to be proven.METHODS: A prospective observational study design was employed. An incremental shuttle walk test (ISWT) was completed by 57 patients with COPD wearing an SWM. The ISWT was repeated by 20 patients wearing the same SWM.RESULTS: Differences were identified between metabolic equivalents (METS) and between step-count across five levels of the ISWT (p < 0.001). Good within monitor reproducibility between two ISWT was identified for total energy expenditure and step-count (p < 0.001).CONCLUSIONS: The SWM is able to detect slow (standardized) speeds of walking and is an acceptable method for measuring physical activity in individuals disabled by COPD.

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KW - Reproducibility of Results

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