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Titre : | Wrist Accelerometry for Physical Activity Measurement in Individuals With Spinal Cord InjuryA Need for Individually Calibrated Cut-Points (2018) |
Auteurs : | Laura A. McCracken ; Jasmin K. Ma ; Christine Voss |
Type de document : | Article |
Dans : | Archives of Physical Medicine and Rehabilitation (Vol. 99, n° 4, 2018) |
Article en page(s) : | p. 684-689 |
Langues: | Anglais |
Descripteurs : |
HE Vinci Paraplégie ; Rééducation et réadaptation ; Tétraplégie |
Mots-clés: | Acceleration ; Accélération ; Paraplegia ; Quadriplegia ; Wheelchairs ; Fauteuils roulants |
Résumé : |
Objective To create and compare individual and group-based cut-points for wrist accelerometry that correspond to moderate-to-vigorous physical activity (MVPA) in people with spinal cord injury (SCI). Design Participants completed a graded treadmill-wheeling test while being assessed for oxygen consumption, wrist-acceleration vector magnitude, and spoke acceleration. Oxygen consumption was converted to SCI metabolic equivalents (METs), and linear regression was applied to determine an individualized vector magnitude cut-point (counts per minute, VM-CPM) corresponding with MVPA (≥3 SCI METs). Multilevel linear regression was applied to determine a group MVPA cut-point. Participants then completed a 6-day monitoring period while wearing the accelerometers. Setting A local SCI research center. Participants Manual wheelchair users (N=20; aged 3164y; injury levels, C5 to L2) with chronic (>1y) SCI. Interventions Not applicable. Main Outcome Measures Mean total daily MVPA, wheeled MVPA, and nonwheeled MVPA were calculated using both the individual and group cut-points. Agreement on measures of minutes per day of MVPA between the individual and group mean cut-point method was assessed using Bland-Altman plots. Results Individual cut-points for MVPA ranged from 6040 to 21,540 VM-CPM, with a group cut-point of 11,652 (95% confidence interval, 739515,909). For total daily MVPA, Bland-Altman analysis revealed a bias of .22+33.0 minutes, with 95% limits of agreement from −64.5 to 64.9 minutes, suggesting a large discrepancy between total MVPA calculated from individual and group mean cut-points. Conclusions Individual calibration of wrist-worn accelerometry is recommended for effective habitual PA monitoring in this population. |
Disponible en ligne : | Oui |
En ligne : | https://login.ezproxy.vinci.be/login?url=https://www.sciencedirect.com/journal/archives-of-physical-medicine-and-rehabilitation |