Karolinska Institutet, Department of Neurobiology, Care Sciences and Society, Division of Physiotherapy, 141 83 Huddinge, Sweden
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Comparison of Pedometer and Accelerometer Derived Steps in Elderly Individuals With Parkinson’s Disease or Osteoporosis Under Free-Living Conditions.
- Published on Dec. 4, 2013
Aim To compare self-reported pedometer steps with accelerometer steps under free-living conditions in individuals with Parkinson’s disease (PD) or osteoporosis (OP).
Methods Seventy-three individuals with PD and 71 individuals with OP wore a pedometer (Yamax LS2000) and an accelerometer (Actigraph GT1M/GT3X+) simultaneously for one week.
Results Fifty-one individuals with PD (72.6 ± 5.3 years) and 61 with OP (75.6 ± 5.3 years) provided simultaneously recorded data for 3–7 consecutive days. Pedometer steps were significantly lower than accelerometer steps in the PD-group (p = .002) but not in the OP-group (p = .956). Bland-Altman plots demonstrated wide limits of agreement between the instruments in both PD (range = 6,911 steps) and OP (range = 6,794 steps).
Conclusion These results suggest that the Actigraph GT1M/GT3X+ should be preferred over the Yamax LS2000 for the assessment of steps in both research and clinical evaluations, particularly in individuals with PD and/or altered gait.
- Martin Benka Wallén 1
- Ing-Mari Dohrn 1
- Agneta Ståhle 1, 2
- Erika Franzén 1, 2
- Maria Hagströmer 1
Karolinska University Hospital, Department of Physical Therapy, Stockholm, Sweden
Journal of Aging and Physical Activity