Physical activity and sedentary behavior in peritoneal dialysis patients: a comparative analysis of ActiGraph GT3X data collected via wrist and waist with placement-specific cut-points
Abstract Background The increasing adoption of accelerometers for the assessment of sedentary behaviour and physical activity among dialysis patients demands robust validation of these monitoring devices. This study aims to determine the comparability of wrist- versus waist-worn ActiGraph GT3X accel...
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BMC
2025-04-01
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| Series: | BMC Nephrology |
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| Online Access: | https://doi.org/10.1186/s12882-025-04100-8 |
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| author | Mingzi Chu Chun Hu Lin Zhu Jiajia Lyu Feng Wang Xingjuan Tao |
| author_facet | Mingzi Chu Chun Hu Lin Zhu Jiajia Lyu Feng Wang Xingjuan Tao |
| author_sort | Mingzi Chu |
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| description | Abstract Background The increasing adoption of accelerometers for the assessment of sedentary behaviour and physical activity among dialysis patients demands robust validation of these monitoring devices. This study aims to determine the comparability of wrist- versus waist-worn ActiGraph GT3X accelerometers, using placement-specific cut-points for peritoneal dialysis patients, to refine research and clinical practices. Methods This was a cross-sectional study. Thirty-one participants wore two ActiGraph GT3X accelerometers, positioned on the right waist and nondominant wrist, and monitored over a seven-day period in a naturalistic setting. Data were processed with ActiLife v6.13.3 and analysed using intraclass correlation coefficients (ICC), limits of agreement, and pairwise 90% equivalence test within a ± 10% threshold. Results The sedentary time measurements from both wrist- and waist-worn GT3X accelerometers were deemed equivalent, with high ICC values (0.98, 95% confidence intervals (CI) 0.97–0.99) and a ratio of 1.0 within the 90% CI of 0.9 to 1.0. Although agreement between accelerometers was good for classification of light-intensity activity (ICC = 0.76), the waist-worn device’s estimates exceeded the equivalence criteria compared to the wrist-worn device (ratio 1.4; 90% CI 1.2–1.6). Conversely, the waist-worn device reported a significantly lower duration of moderate-to-vigorous physical activity (MVPA) than the wrist-worn device (Ln transformed ratio 0.3; 90% CI 0.1–0.4). Conclusions The use of placement-specific cut-points did not ensure equivalence in physical activity parameter estimates between wrist- and waist-worn ActiGraph GT3X devices. The findings underscore the necessity for consistent accelerometer placement for reliable monitoring of physical activity in peritoneal dialysis patients. Clinical trial number Not applicable. |
| format | Article |
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| language | English |
| publishDate | 2025-04-01 |
| publisher | BMC |
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| series | BMC Nephrology |
| spelling | doaj-art-50d4d38b5ed0430aa1d4b7a40f200e992025-08-20T03:08:05ZengBMCBMC Nephrology1471-23692025-04-012611710.1186/s12882-025-04100-8Physical activity and sedentary behavior in peritoneal dialysis patients: a comparative analysis of ActiGraph GT3X data collected via wrist and waist with placement-specific cut-pointsMingzi Chu0Chun Hu1Lin Zhu2Jiajia Lyu3Feng Wang4Xingjuan Tao5Department of Nursing, Shanghai Ninth People’s Hospital, Shanghai Jiao Tong University School of MedicineDepartment of Nephrology, Shanghai Ninth People’s Hospital, Shanghai Jiao Tong University School of MedicineDepartment of Nursing, Shanghai Ninth People’s Hospital, Shanghai Jiao Tong University School of MedicineDepartment of Nursing, Shanghai Ninth People’s Hospital, Shanghai Jiao Tong University School of MedicineDepartment of Nursing, Shanghai Ninth People’s Hospital, Shanghai Jiao Tong University School of MedicineShanghai Jiao Tong University School of NursingAbstract Background The increasing adoption of accelerometers for the assessment of sedentary behaviour and physical activity among dialysis patients demands robust validation of these monitoring devices. This study aims to determine the comparability of wrist- versus waist-worn ActiGraph GT3X accelerometers, using placement-specific cut-points for peritoneal dialysis patients, to refine research and clinical practices. Methods This was a cross-sectional study. Thirty-one participants wore two ActiGraph GT3X accelerometers, positioned on the right waist and nondominant wrist, and monitored over a seven-day period in a naturalistic setting. Data were processed with ActiLife v6.13.3 and analysed using intraclass correlation coefficients (ICC), limits of agreement, and pairwise 90% equivalence test within a ± 10% threshold. Results The sedentary time measurements from both wrist- and waist-worn GT3X accelerometers were deemed equivalent, with high ICC values (0.98, 95% confidence intervals (CI) 0.97–0.99) and a ratio of 1.0 within the 90% CI of 0.9 to 1.0. Although agreement between accelerometers was good for classification of light-intensity activity (ICC = 0.76), the waist-worn device’s estimates exceeded the equivalence criteria compared to the wrist-worn device (ratio 1.4; 90% CI 1.2–1.6). Conversely, the waist-worn device reported a significantly lower duration of moderate-to-vigorous physical activity (MVPA) than the wrist-worn device (Ln transformed ratio 0.3; 90% CI 0.1–0.4). Conclusions The use of placement-specific cut-points did not ensure equivalence in physical activity parameter estimates between wrist- and waist-worn ActiGraph GT3X devices. The findings underscore the necessity for consistent accelerometer placement for reliable monitoring of physical activity in peritoneal dialysis patients. Clinical trial number Not applicable.https://doi.org/10.1186/s12882-025-04100-8Physical activitySedentaryPeritoneal dialysisAccelerometer |
| spellingShingle | Mingzi Chu Chun Hu Lin Zhu Jiajia Lyu Feng Wang Xingjuan Tao Physical activity and sedentary behavior in peritoneal dialysis patients: a comparative analysis of ActiGraph GT3X data collected via wrist and waist with placement-specific cut-points BMC Nephrology Physical activity Sedentary Peritoneal dialysis Accelerometer |
| title | Physical activity and sedentary behavior in peritoneal dialysis patients: a comparative analysis of ActiGraph GT3X data collected via wrist and waist with placement-specific cut-points |
| title_full | Physical activity and sedentary behavior in peritoneal dialysis patients: a comparative analysis of ActiGraph GT3X data collected via wrist and waist with placement-specific cut-points |
| title_fullStr | Physical activity and sedentary behavior in peritoneal dialysis patients: a comparative analysis of ActiGraph GT3X data collected via wrist and waist with placement-specific cut-points |
| title_full_unstemmed | Physical activity and sedentary behavior in peritoneal dialysis patients: a comparative analysis of ActiGraph GT3X data collected via wrist and waist with placement-specific cut-points |
| title_short | Physical activity and sedentary behavior in peritoneal dialysis patients: a comparative analysis of ActiGraph GT3X data collected via wrist and waist with placement-specific cut-points |
| title_sort | physical activity and sedentary behavior in peritoneal dialysis patients a comparative analysis of actigraph gt3x data collected via wrist and waist with placement specific cut points |
| topic | Physical activity Sedentary Peritoneal dialysis Accelerometer |
| url | https://doi.org/10.1186/s12882-025-04100-8 |
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