Accelerometer-measured versus self-reported physical activity levels in women before and up to 48 months after Roux-en-Y Gastric Bypass
Abstract Background Roux-en-Y Gastric Bypass (RYGB) patients overestimate their time spent in moderate-to-vigorous physical activity (MVPA) to a greater extent post-surgery than pre-surgery. However, there is no data on discrepancy between self-reported and accelerometer-measured MVPA beyond nine mo...
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doaj-d76c217ab819433d91841635a1397d022020-11-25T02:38:27ZengBMCBMC Surgery1471-24822020-02-0120111010.1186/s12893-020-00699-7Accelerometer-measured versus self-reported physical activity levels in women before and up to 48 months after Roux-en-Y Gastric BypassSofie Possmark0Fanny Sellberg1Mikaela Willmer2Per Tynelius3Margareta Persson4Daniel Berglind5Department of Global Public Health, Karolinska InstitutetDepartment of Global Public Health, Karolinska InstitutetDepartment of Health and Caring Sciences, University of GävleDepartment of Global Public Health, Karolinska InstitutetDepartment of Nursing, Umeå UniversityDepartment of Global Public Health, Karolinska InstitutetAbstract Background Roux-en-Y Gastric Bypass (RYGB) patients overestimate their time spent in moderate-to-vigorous physical activity (MVPA) to a greater extent post-surgery than pre-surgery. However, there is no data on discrepancy between self-reported and accelerometer-measured MVPA beyond nine months post-RYGB. The aim was to investigate how the duration of MVPA (main outcome) differs when comparing a self-administered questionnaire to accelerometer-data from pre-surgery and up to 48 months post-RYGB. Methods Twenty-six (38%) RYGB-treated women with complete data from the original cohort (N = 69) were included. Participants were recruited from five Swedish hospitals. Mean pre-surgery BMI was 38.9 (standard deviation (SD) = 3.4) kg/m2 and mean age 39.9 (SD = 6.5) years. MVPA was subjectively measured by a self-administered questionnaire and objectively measured by the ActiGraph GT3X+ accelerometer at 3 months pre-RYGB and 9- and 48 months post-RYGB. Means and SD were calculated at 3 months pre- and 9- and 48 months post-RYGB. We calculated the P-values of the differences with Wilcoxon Signed-Rank test. For correlations between the self-administered questionnaire and the accelerometers, Spearman’s rank correlation was used. Results Participants significantly overestimated (i.e. self-reported more time spent in MVPA compared to accelerometry) their MVPA in a higher degree post- compared to pre-RYGB surgery. Compared to pre-surgery, self-reported MVPA increased with 46.9 and 36.5% from pre- to 9- and 48 months, respectively, whereas changes were a 6.1% increase and 3.5% decrease with accelerometers. Correlations between self-reported and accelerometer-measured MVPA-assessments were poor at all measurement points (r = 0.21–0.42) and only significant at 48 months post-RYGB (P = 0.032). Conclusions The discrepancy between self-reported and objectively assessed MVPA within the same individual is greater up to 48 months post-RYGB compared to before surgery. To help bariatric patients understand and hopefully increase their physical activity behaviors post-surgery, objective measures of physical activity should be used.http://link.springer.com/article/10.1186/s12893-020-00699-7Gastric bypassBariatric surgeryPhysical activityAccelerometerSelf-report |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Sofie Possmark Fanny Sellberg Mikaela Willmer Per Tynelius Margareta Persson Daniel Berglind |
spellingShingle |
Sofie Possmark Fanny Sellberg Mikaela Willmer Per Tynelius Margareta Persson Daniel Berglind Accelerometer-measured versus self-reported physical activity levels in women before and up to 48 months after Roux-en-Y Gastric Bypass BMC Surgery Gastric bypass Bariatric surgery Physical activity Accelerometer Self-report |
author_facet |
Sofie Possmark Fanny Sellberg Mikaela Willmer Per Tynelius Margareta Persson Daniel Berglind |
author_sort |
Sofie Possmark |
title |
Accelerometer-measured versus self-reported physical activity levels in women before and up to 48 months after Roux-en-Y Gastric Bypass |
title_short |
Accelerometer-measured versus self-reported physical activity levels in women before and up to 48 months after Roux-en-Y Gastric Bypass |
title_full |
Accelerometer-measured versus self-reported physical activity levels in women before and up to 48 months after Roux-en-Y Gastric Bypass |
title_fullStr |
Accelerometer-measured versus self-reported physical activity levels in women before and up to 48 months after Roux-en-Y Gastric Bypass |
title_full_unstemmed |
Accelerometer-measured versus self-reported physical activity levels in women before and up to 48 months after Roux-en-Y Gastric Bypass |
title_sort |
accelerometer-measured versus self-reported physical activity levels in women before and up to 48 months after roux-en-y gastric bypass |
publisher |
BMC |
series |
BMC Surgery |
issn |
1471-2482 |
publishDate |
2020-02-01 |
description |
Abstract Background Roux-en-Y Gastric Bypass (RYGB) patients overestimate their time spent in moderate-to-vigorous physical activity (MVPA) to a greater extent post-surgery than pre-surgery. However, there is no data on discrepancy between self-reported and accelerometer-measured MVPA beyond nine months post-RYGB. The aim was to investigate how the duration of MVPA (main outcome) differs when comparing a self-administered questionnaire to accelerometer-data from pre-surgery and up to 48 months post-RYGB. Methods Twenty-six (38%) RYGB-treated women with complete data from the original cohort (N = 69) were included. Participants were recruited from five Swedish hospitals. Mean pre-surgery BMI was 38.9 (standard deviation (SD) = 3.4) kg/m2 and mean age 39.9 (SD = 6.5) years. MVPA was subjectively measured by a self-administered questionnaire and objectively measured by the ActiGraph GT3X+ accelerometer at 3 months pre-RYGB and 9- and 48 months post-RYGB. Means and SD were calculated at 3 months pre- and 9- and 48 months post-RYGB. We calculated the P-values of the differences with Wilcoxon Signed-Rank test. For correlations between the self-administered questionnaire and the accelerometers, Spearman’s rank correlation was used. Results Participants significantly overestimated (i.e. self-reported more time spent in MVPA compared to accelerometry) their MVPA in a higher degree post- compared to pre-RYGB surgery. Compared to pre-surgery, self-reported MVPA increased with 46.9 and 36.5% from pre- to 9- and 48 months, respectively, whereas changes were a 6.1% increase and 3.5% decrease with accelerometers. Correlations between self-reported and accelerometer-measured MVPA-assessments were poor at all measurement points (r = 0.21–0.42) and only significant at 48 months post-RYGB (P = 0.032). Conclusions The discrepancy between self-reported and objectively assessed MVPA within the same individual is greater up to 48 months post-RYGB compared to before surgery. To help bariatric patients understand and hopefully increase their physical activity behaviors post-surgery, objective measures of physical activity should be used. |
topic |
Gastric bypass Bariatric surgery Physical activity Accelerometer Self-report |
url |
http://link.springer.com/article/10.1186/s12893-020-00699-7 |
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