Test-Retest Reliability of the StepWatch Activity Monitor Outputs in Healthy Adults

Mudge, Suzie; Taylor, Denise; Chang, Olivia H.; Wong, Rosita

doi:10.1123/jpah.7.5.671

Cited by 43 publications

(37 citation statements)

References 20 publications

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“…The StepWatch was specifically chosen for this study as it is worn on the ankle, making it ideally suited for measuring pedalling and walking behaviour. Further, the StepWatch has been demonstrated as a reliable measure of walking behaviour (3 day agreements for steps per day (39.1%) and per cent inactive time (9.52%)) 23 and an accurate measure of sedentary behaviours (89.8-99.5% accurate) and light intensity walking (86.1% accurate). 24 The StepWatch has demonstrated superior ability for detecting pedalling time (23.5-54.4% accurate) when compared to hip-worn accelerometers (8.1-47.1% correct).…”

Section: Methodsmentioning

confidence: 99%

Multicomponent intervention to reduce daily sedentary time: a randomised controlled trial

et al. 2013

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ObjectivesTo test the efficacy of a multicomponent technology intervention for reducing daily sedentary time and improving cardiometabolic disease risk among sedentary, overweight university employees.DesignBlinded, randomised controlled trial.SettingA large south-eastern university in the USA.Participants49 middle-aged, primarily female, sedentary and overweight adults working in sedentary jobs enrolled in the study. A total of 40 participants completed the study.InterventionsParticipants were randomised to either: (1) an intervention group (N=23; 47.6+9.9 years; 94.1% female; 33.2+4.5 kg/m2); (2) or wait-list control group (N=17; 42.6+8.9 years; 86.9% female; 31.7+4.9 kg/m2). The intervention group received a theory-based, internet-delivered programme, a portable pedal machine at work and a pedometer for 12 weeks. The wait-list control group maintained their behaviours for 12 weeks.Outcome measuresPrimary (sedentary and physical activity behaviour measured objectively through StepWatch) and secondary (heart rate, blood pressure, height, weight, waist circumference, per cent body fat, cardiorespiratory fitness, fasting lipids) outcomes were measured at baseline and postintervention (12 weeks). Exploratory outcomes including intervention compliance and process evaluation measures were also assessed postintervention.ResultsCompared to controls, the intervention group reduced daily sedentary time (mean change (95%CI): −58.7 min/day (−118.4 to 0.99; p<0.01)) after adjusting for baseline values and monitor wear time. Intervention participants logged on to the website 71.3% of all intervention days, used the pedal machine 37.7% of all working intervention days and pedalled an average of 31.1 min/day.ConclusionsThese findings suggest that the intervention was engaging and resulted in reductions in daily sedentary time among full-time sedentary employees. These findings hold public health significance due to the growing number of sedentary jobs and the potential of these technologies in large-scale worksite programmes.Trial RegistrationClinicalTrials.gov #NCT01371084.

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Section: Methodsmentioning

confidence: 99%

Multicomponent intervention to reduce daily sedentary time: a randomised controlled trial

et al. 2013

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“…To exclude times that participants may have taken the StepWatch off during the day, we omitted minutes when the monitor registered no steps for 180 consecutive minutes during the day. (24) Finally, we restricted our sample to those participants who wore the instrument for at least 3 valid days, considered a minimum standard to establish a reliable estimate of PA. (25)…”

Section: Methodsmentioning

confidence: 99%

Daily Walking and the Risk of Incident Functional Limitation in Knee Osteoarthritis: An Observational Study

White

Tudor‐Locke

Zhang

et al. 2014

Arthritis Care & Research

122

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Background Physical activity is recommended to mitigate functional limitations associated with knee osteoarthritis (OA). However, it is unclear whether walking on its own protects against the development of functional limitation. Methods Walking over 7 days was objectively measured as steps/day within a cohort of people with or at risk of knee OA from the Multicenter Osteoarthritis Study. Incident functional limitation over two years was defined by performance-based (gait speed ≤ 1.0 m/s) and self-report (WOMAC physical function ≥ 28/68) measures. We evaluated the association of steps/day at baseline with developing functional limitation two years later by calculating risk ratios adjusted for potential confounders. The number of steps/day that best distinguished risk for developing functional limitation was estimated from the maximum distance from chance on Receiver Operator Characteristic curves. Results Among 1788 participants (mean age 67, mean BMI 31 kg/m2, female 60%), each additional 1000 steps/day was associated with a 16% and 18% reduction in incident functional limitation by performance-based and self-report measures, respectively. Walking < 6000 and < 5900 steps/day were the best thresholds to distinguish incident functional limitation by performance-based (67.3%/71.8% [sensitivity/specificity]) and self-report (58.7%/68.9%) measures, respectively. Conclusions More walking was associated with less risk of functional limitation over two years. Walking ≥ 6000 steps/day provides a preliminary estimate of the level of walking activity to protect against developing functional limitation in people with or at risk of knee OA.

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“…Further, the SAM has been shown to have good test-retest reliability among both older adult [17] and stroke patients [18] when measured over a 3 d monitoring period; it also correlates well with the 2 min walk test among patients with LL amputations [19]. The SAM measures ambulatory activity by recording the number of steps taken per day.…”

Section: Physical Activity Monitormentioning

confidence: 95%

Balance confidence and activity of community-dwelling patients with transtibial amputation

Mandel¹,

Paul

Paner

et al. 2016

J Rehabil Res Dev

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Abstract-The purpose of this study was to examine the relationship between balance confidence and community-based physical activity. Twenty-two community-dwelling patients with right or left unilateral transtibial amputation who reported no falls in the past 6 mo completed the Activities-Specific Balance Confidence Scale (ABC) and wore a StepWatch Activity Monitor for 7 consecutive d in the community. Subjects were subsequently stratified as low (<3,000 steps/d) or high (3,000 steps/ d) activity groups. Balance confidence was significantly lower among the low activity weekday group (LAG) (70.8 +/-12.0 vs 88.9 +/-8.7, t(20) = 3.97, p = 0.001). Further, correlation analysis revealed a positive correlation between ABC score and step total (r = 0.55, p < 0.01). It is unknown whether the LAG limited ambulation as an intentional strategy of fall-risk avoidance. Although clinicians routinely inquire about falls in the community among patients with lower-limb amputation, the results of this study emphasize the importance of contextualizing recent fall history relative to activity level. Clinicians can use this contextual information when considering the inclusion of appropriate fall-risk mediation strategies relative to activity levels and counseling patients on the benefits of physical exercise for maintaining functional capacity and general health.

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Test-Retest Reliability of the StepWatch Activity Monitor Outputs in Healthy Adults

Cited by 43 publications

References 20 publications

Multicomponent intervention to reduce daily sedentary time: a randomised controlled trial

Multicomponent intervention to reduce daily sedentary time: a randomised controlled trial

Daily Walking and the Risk of Incident Functional Limitation in Knee Osteoarthritis: An Observational Study

Balance confidence and activity of community-dwelling patients with transtibial amputation

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