Can a single question provide an accurate measure of physical activity?
Objective The 'single-item measure' was developed as a short self-report tool for assessing physical activity. The aim of this study was to test the criterion validity of the single-item measure against accelerometry. Design Participants (n=66, 65% female, age: 39±11 years) wore an acceler...
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rr-article-96115102013-01-01T00:00:00Z Can a single question provide an accurate measure of physical activity? Karen Milton (693874) Stacy Clemes (1256949) Fiona C. Bull (7238426) Other education not elsewhere classified Other health sciences not elsewhere classified untagged Education Medical and Health Sciences not elsewhere classified Objective The 'single-item measure' was developed as a short self-report tool for assessing physical activity. The aim of this study was to test the criterion validity of the single-item measure against accelerometry. Design Participants (n=66, 65% female, age: 39±11 years) wore an accelerometer (ActiGraph GT3X) over a 7-day period and on day 8, completed the single-item measure. The number of days of ≥30 min of accelerometer-determined moderate to vigorous intensity physical activity (MVPA) were calculated using two approaches; first by including all minutes of MVPA and second by including only MVPA accumulated in bouts of ≥10 min (counts/min ≥1952). Associations between the single-item measure and accelerometer were examined using Spearman correlations and 95% limits of agreement. Percent agreement and κ statistic were used to assess agreement between the tools in classifying participants as sufficiently/insufficiently active. Results Correlations between the number of days of ≥30 min MVPA recorded by the single-item and accelerometer ranged from 0.46 to 0.57. Participants underreported their activity on the single-item measure (-1.59 days) when compared with all objectively measured MVPA, but stronger congruence was observed when compared with MVPA accumulated in bouts of ≥10 min (0.38 days). Overall agreement between the single-item and accelerometry in classifying participants as sufficiently/insufficiently active was 58% (k=0.23, 95% CI 0.05 to 0.41) when including all MVPA and 76% (k=0.39, 95% CI 0.14 to 0.64) when including activity undertaken in bouts of ≥10 min. Conclusions The single-item measure is a valid screening tool to determine whether respondents are sufficiently active to benefit their health. 2013-01-01T00:00:00Z Text Journal contribution 2134/16676 https://figshare.com/articles/journal_contribution/Can_a_single_question_provide_an_accurate_measure_of_physical_activity_/9611510 CC BY-NC-ND 4.0 |
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Other education not elsewhere classified Other health sciences not elsewhere classified untagged Education Medical and Health Sciences not elsewhere classified |
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Other education not elsewhere classified Other health sciences not elsewhere classified untagged Education Medical and Health Sciences not elsewhere classified Karen Milton Stacy Clemes Fiona C. Bull Can a single question provide an accurate measure of physical activity? |
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Objective The 'single-item measure' was developed as a short self-report tool for assessing physical activity. The aim of this study was to test the criterion validity of the single-item measure against accelerometry. Design Participants (n=66, 65% female, age: 39±11 years) wore an accelerometer (ActiGraph GT3X) over a 7-day period and on day 8, completed the single-item measure. The number of days of ≥30 min of accelerometer-determined moderate to vigorous intensity physical activity (MVPA) were calculated using two approaches; first by including all minutes of MVPA and second by including only MVPA accumulated in bouts of ≥10 min (counts/min ≥1952). Associations between the single-item measure and accelerometer were examined using Spearman correlations and 95% limits of agreement. Percent agreement and κ statistic were used to assess agreement between the tools in classifying participants as sufficiently/insufficiently active. Results Correlations between the number of days of ≥30 min MVPA recorded by the single-item and accelerometer ranged from 0.46 to 0.57. Participants underreported their activity on the single-item measure (-1.59 days) when compared with all objectively measured MVPA, but stronger congruence was observed when compared with MVPA accumulated in bouts of ≥10 min (0.38 days). Overall agreement between the single-item and accelerometry in classifying participants as sufficiently/insufficiently active was 58% (k=0.23, 95% CI 0.05 to 0.41) when including all MVPA and 76% (k=0.39, 95% CI 0.14 to 0.64) when including activity undertaken in bouts of ≥10 min. Conclusions The single-item measure is a valid screening tool to determine whether respondents are sufficiently active to benefit their health. |
| format |
Default Article |
| author |
Karen Milton Stacy Clemes Fiona C. Bull |
| author_facet |
Karen Milton Stacy Clemes Fiona C. Bull |
| author_sort |
Karen Milton (693874) |
| title |
Can a single question provide an accurate measure of physical activity? |
| title_short |
Can a single question provide an accurate measure of physical activity? |
| title_full |
Can a single question provide an accurate measure of physical activity? |
| title_fullStr |
Can a single question provide an accurate measure of physical activity? |
| title_full_unstemmed |
Can a single question provide an accurate measure of physical activity? |
| title_sort |
can a single question provide an accurate measure of physical activity? |
| publishDate |
2013 |
| url |
https://hdl.handle.net/2134/16676 |
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1797737686593699840 |