Gait Speed and Step-Count Monitor Accuracy in Community-Dwelling Older Adults

Storti, Kristi L.; Pettee, Kelley K.; Brach, Jennifer S.; Talkowski, Jaime B; Richardson, Caroline R.; Kriska, Andrea M.

doi:10.1249/mss.0b013e318158b504

Cited by 140 publications

(127 citation statements)

References 32 publications

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“…The SAM is a pager sized accelerometer worn around the ankle using a Velcro strap [6][7][8][9]. It provides no feedback to the wearer and is impervious to tampering.…”

Section: Assessment Of Ambulationmentioning

confidence: 99%

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Factors that differentiate level of ambulation in hospitalised older adults

Fisher¹,

Graham

Brown

et al. 2011

Age and Ageing

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“…The SAM is a pager sized accelerometer worn around the ankle using a Velcro strap [6][7][8][9]. It provides no feedback to the wearer and is impervious to tampering.…”

Section: Assessment Of Ambulationmentioning

confidence: 99%

“…Time spent sitting or lying affects muscle physiology [4], is thought to accelerate sarcopenia [5], and to be a determinant driver of the obesity epidemic [6]. These two effects of SB: obesity and low muscle strength appear to potentiate each other to increase risk of disablement and frailty in older adults [7].…”

mentioning

confidence: 99%

Factors that differentiate level of ambulation in hospitalised older adults

Fisher¹,

Graham

Brown

et al. 2011

Age and Ageing

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“…Some reports have indicated that a pedometer or accelerometer may underestimate the actual steps taken by elderly people who have disease and walk at a slow speed, as with the subjects in this study (Storti et al, 2008;Elsworth et al, 2009). However, it has also been reported that a triaxial accelerometer would be better suited than a pedometer to count shuffling steps and slow speed, such as patients with Parkinson's disease (Dijkstra et al, 2008) and, furthermore, that a piezoelectric sensor can accurately calculate the number of steps taken by an individual at slow speed (Melanson et al, 2004).…”

Section: Daily Ambulatory Activitymentioning

confidence: 59%

The Relationship between Physical Fitness and Ambulatory Activity in Very Elderly Women with Normal Functioning and Functional Limitations

Yoshida

Nakagaichi

Saito

et al. 2010

J Physiol Anthropol

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The effect of daily ambulatory activity on physical fitness has not yet been identified by quantitatively measuring the time spent on the intensity levels of ambulatory activity in elderly women over 75 with different functional capacity levels. The subjects consisted of 147 elderly women over 75 years old (82.8Ϯ4.3 years old) who were all capable of performing basic daily activities by themselves. Physical fitness was measured for 7 items (handgrip strength, knee extensor strength, postural stability, stepping, one-legged standing time with eyes open, 10 m walking, and the Timed Up and Go Test). The subjects wore a triaxial accelerometer for 2 consecutive weeks to measure their daily physical activities. The functional capacity level was assessed by the Tokyo Metropolitan Institute of Gerontology Index of Competence. The subjects were divided into two groups, a group with a score Ն10 points (high functional capacity group, nϭ59) and a score Ͻ10 points (low functional capacity group, nϭ88), and the relationship between physical fitness and physical activity was examined in both groups. In both the high and low functional capacity groups, 10 m walking, the Timed Up and Go Test, and one-legged standing time with eyes open significantly correlated with either the total steps/day or the ambulatory activity intensity. In the high functional capacity group, the knee extensor strength also significantly correlated with the total steps/day and moderate ambulatory activity. It is suggested that very elderly women with a reduced functional capacity should maintain their mobility by simply increasing their daily ambulatory activity.

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“…We evaluated three dependent variables (Storti et al, 2008): (a) the number of VM counts per day, which we interpreted as the total force applied on each day of testing; (b) the total number of steps per day; and (c) for each day, the mean number of VM counts/step, which we interpreted as the resultant force per step.…”

Section: Discussionmentioning

confidence: 99%

“…In the present study, we used wireless accelerometry to evaluate daily variations in gait before and during a sea voyage. Wireless accelerometry is a recent technology that has been validated as a monitor of human locomotor activity 88 in settings outside the laboratory (Cavanaugh, Kochi, & Stergiou, 2010;Storti et al, 2008).…”

mentioning

confidence: 99%