Article

Determine validity and reliability of SenseWear Pro2 Armband (SWP2A) and
Yamax Digi-Walker SW-200 Pedometer (YDWP) in stroke and healthy adults. METHODS:
Fifteen stroke patients and 15 healthy participants wore SWP2A on upper arm and
YDWP at hip/knee. Different activities were performed: treadmill walking, walking
up/down a step, cycling and walking on an even surface. Steps and Energy
Expenditure (EE) were measured and compared to steps counted manually and
indirect calorimetry. Repeated measurements were compared to determine
reliability of both devices. RESULTS: Spearman correlation coefficients between
knee-worn YDWP and counted steps while walking on an even surface was >/=0.89 in
healthy and >/=0.95 in stroke. Treadmill walking revealed high Spearman
correlation coefficients in healthy individuals (rs >/= 0.90) and at 1.5 km/h in
stroke (rs = 0.69). During other activities YDWP often underestimated steps.
SWP2A data revealed inconsistent results in EE and steps. Reliability tested by
repeated measurements varied between 0.66 and 0.98 for YDWP and 0.61 and 0.97 for
SWP2A. CONCLUSION: YDWP and SWP2A are both reliable. Only knee-worn YDWP is a
valid device to measure steps except high intensity walking in stroke. YDWP
systematically undercounts steps during other activities of short duration. This
study could not demonstrate valid measurement of steps/EE in stroke using SWP2A.
Implications for Rehabilitation Stroke is a disabling disease with residual
neurologic deficits, which impairs mobility and predisposes them to sedentary
behavior. A Yamax Digi-Walker SW-200 knee-worn pedometer showed to be a valid and
reliable technique to measure ambulatory activity in stroke. A valid instrument
to measure energy expenditure in stroke needs to be explored.

Langue : ANGLAIS