Confusion and conflict in assessing the physical activity status of middle-aged men

Hdl Handle:
http://hdl.handle.net/10149/94178
Title:
Confusion and conflict in assessing the physical activity status of middle-aged men
Authors:
Thompson, D. (Dylan); Batterham, A. M. (Alan); Markovitch, D. (Daniella); Dixon, N. C. (Natalie); Lund, A. J. S. (Adam); Walhin, J.-P. (Jean-Philippe)
Affiliation:
University of Teesside. Health and Social Care Institute.
Citation:
Thompson, D. et al. (2009) 'Confusion and conflict in assessing the physical activity status of middle-aged men', PLoS ONE, 4 (2), pp.1-8.
Publisher:
Public Library of Science
Journal:
PLoS ONE
Issue Date:
Feb-2009
URI:
http://hdl.handle.net/10149/94178
DOI:
10.1371/journal.pone.0004337
Abstract:
Background: Physical activity (including exercise) is prescribed for health and there are various recommendations that can be used to gauge physical activity status. The objective of the current study was to determine whether twelve commonly-used physical activity recommendations similarly classified middle-aged men as sufficiently active for general health. Methods and Findings: We examined the commonality in the classification of physical activity status between twelve variations of physical activity recommendations for general health in ninety men aged 45-64 years. Physical activity was assessed using synchronised accelerometry and heart rate. Using different guidelines but the same raw data, the proportion of men defined as active ranged from to 11% to 98% for individual recommendations (median 73%, IQR 30% to 87%). There was very poor absolute agreement between the recommendations, with an intraclass correlation coefficient (A,1) of 0.24 (95% CI, 0.15 to 0.34). Only 8% of men met all 12 recommendations and would therefore be unanimously classified as active and only one man failed to meet every recommendation and would therefore be unanimously classified as not sufficiently active. The wide variability in physical activity classification was explained by ostensibly subtle differences between the 12 recommendations for thresholds related to activity volume (time or energy), distribution (e.g., number of days of the week), moderate intensity cut-point (e.g., 3 vs. 4 metabolic equivalents or METs), and duration (including bout length). Conclusions: Physical activity status varies enormously depending on the physical activity recommendation that is applied and even ostensibly small differences have a major impact. Approximately nine out of every ten men in the present study could be variably described as either active or not sufficiently active. Either the effective dose or prescription that underlies each physical activity recommendation is different or each recommendation is seeking the same prescriptive outcome but with variable success.
Type:
Article
Language:
en
Keywords:
physical activity; exercise; middle-aged; men; physical activity status; recommendations
ISSN:
1932-6203
Rights:
Author can archive publisher's version/PDF. For full details see http://www.sherpa.ac.uk/romeo/ [Accessed 12/03/2010]
Citation Count:
0 [Scopus, 12/03/2010]

Full metadata record

DC FieldValue Language
dc.contributor.authorThompson, D. (Dylan)en
dc.contributor.authorBatterham, A. M. (Alan)en
dc.contributor.authorMarkovitch, D. (Daniella)en
dc.contributor.authorDixon, N. C. (Natalie)en
dc.contributor.authorLund, A. J. S. (Adam)en
dc.contributor.authorWalhin, J.-P. (Jean-Philippe)en
dc.date.accessioned2010-03-12T11:11:22Z-
dc.date.available2010-03-12T11:11:22Z-
dc.date.issued2009-02-
dc.identifier.citationPLoS ONE; 4 (2): Art. no. e4337en
dc.identifier.issn1932-6203-
dc.identifier.doi10.1371/journal.pone.0004337-
dc.identifier.urihttp://hdl.handle.net/10149/94178-
dc.description.abstractBackground: Physical activity (including exercise) is prescribed for health and there are various recommendations that can be used to gauge physical activity status. The objective of the current study was to determine whether twelve commonly-used physical activity recommendations similarly classified middle-aged men as sufficiently active for general health. Methods and Findings: We examined the commonality in the classification of physical activity status between twelve variations of physical activity recommendations for general health in ninety men aged 45-64 years. Physical activity was assessed using synchronised accelerometry and heart rate. Using different guidelines but the same raw data, the proportion of men defined as active ranged from to 11% to 98% for individual recommendations (median 73%, IQR 30% to 87%). There was very poor absolute agreement between the recommendations, with an intraclass correlation coefficient (A,1) of 0.24 (95% CI, 0.15 to 0.34). Only 8% of men met all 12 recommendations and would therefore be unanimously classified as active and only one man failed to meet every recommendation and would therefore be unanimously classified as not sufficiently active. The wide variability in physical activity classification was explained by ostensibly subtle differences between the 12 recommendations for thresholds related to activity volume (time or energy), distribution (e.g., number of days of the week), moderate intensity cut-point (e.g., 3 vs. 4 metabolic equivalents or METs), and duration (including bout length). Conclusions: Physical activity status varies enormously depending on the physical activity recommendation that is applied and even ostensibly small differences have a major impact. Approximately nine out of every ten men in the present study could be variably described as either active or not sufficiently active. Either the effective dose or prescription that underlies each physical activity recommendation is different or each recommendation is seeking the same prescriptive outcome but with variable success.en
dc.language.isoenen
dc.publisherPublic Library of Scienceen
dc.rightsAuthor can archive publisher's version/PDF. For full details see http://www.sherpa.ac.uk/romeo/ [Accessed 12/03/2010]en
dc.subjectphysical activityen
dc.subjectexerciseen
dc.subjectmiddle-ageden
dc.subjectmenen
dc.subjectphysical activity statusen
dc.subjectrecommendationsen
dc.titleConfusion and conflict in assessing the physical activity status of middle-aged menen
dc.typeArticleen
dc.contributor.departmentUniversity of Teesside. Health and Social Care Institute.en
dc.identifier.journalPLoS ONEen
ref.citationcount0 [Scopus, 12/03/2010]en
or.citation.harvardThompson, D. et al. (2009) 'Confusion and conflict in assessing the physical activity status of middle-aged men', PLoS ONE, 4 (2), pp.1-8.-
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