Validation of accelerometry with ActiGraph GT3x to estimate physical activity intensity in older adults (55 – 75 years)

L.L. Lubs, N. Muldoon, U.C. Vural, C. Drell, I. Stalling, Chris Easton, K. Bammann

Research output: Contribution to journalMeeting Abstract

Abstract

Background: ActiGraph is widely used to measure physical activity in field studies. However, there is limited research on the validity in older adults. As the metabolic cost of ambulation is greater in older adults and their gait can be different, this research is needed. Therefore, the aims of this study are (1) to identify the best placement for the accelerometer (ACC) and (2) to create novel equations to predict intensity of physical activity with ActiGraph. Methods: 20 participants (9 female, 11 male) performed 20 minutes of treadmill walking with increasing speed of 0.5 km/h every 4 minutes (3.0 to 5.0 km/h) and five typical daily activities (reading newspaper, shopping, brushing, cycling and aerobics) in older adults for 4 minutes each. Indirect calorimetry was used to validate the ActiGraph estimates of physical activity intensity. ACC were worn on both ankles, both wrists and at the hip. Included were cardiorespiratory healthy Scots aged 55 – 75 years living near Glasgow. Bland-Altman-Plots, Pearson's correlation and linear regression were used to analyse the data. Results: Participants were on average 62.9 years old (SD 3.6) with a mean BMI of 26.7 kg/m2 (SD 5.4). With the treadmill walking, ACC measurements performed reasonably well, irrespective of placement. However, with daily activities the performance is dependent on activity type and placement, e.g. cycling was best measured on the ankle and brushing on the wrist. Measuring accuracy was dependent on age (p < 0.01) and sex (p < 0.001) for ankle placement. Age and sex did not affect the measuring accuracy of hip or wrist placement. In daily and treadmill activities is a high positive correlation between dominant and non-dominant ankle (daily: r = 1.00; treadmill: r = 0.96) and both wrists (daily: r = 0.95; treadmill r = 0.85). Conclusion: In daily activities, the best placement of the ACC depends on the type of activity. It is irrelevant, whether the device is worn on the dominant or non-dominant wrist or ankle.
Original languageEnglish
Pages (from-to)656-804
JournalDeutsche Gesundheitswesen
Volume79
Issue number8/9
DOIs
Publication statusE-pub ahead of print - 1 Sep 2017

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Accelerometry
Wrist
Ankle
Walking
Hip
Indirect Calorimetry
Newspapers
Gait
Research
Reading
Linear Models
Costs and Cost Analysis
Equipment and Supplies

Cite this

@article{30d7eca4a63c469289dcf1a0ce251ea6,
title = "Validation of accelerometry with ActiGraph GT3x to estimate physical activity intensity in older adults (55 – 75 years)",
abstract = "Background: ActiGraph is widely used to measure physical activity in field studies. However, there is limited research on the validity in older adults. As the metabolic cost of ambulation is greater in older adults and their gait can be different, this research is needed. Therefore, the aims of this study are (1) to identify the best placement for the accelerometer (ACC) and (2) to create novel equations to predict intensity of physical activity with ActiGraph. Methods: 20 participants (9 female, 11 male) performed 20 minutes of treadmill walking with increasing speed of 0.5 km/h every 4 minutes (3.0 to 5.0 km/h) and five typical daily activities (reading newspaper, shopping, brushing, cycling and aerobics) in older adults for 4 minutes each. Indirect calorimetry was used to validate the ActiGraph estimates of physical activity intensity. ACC were worn on both ankles, both wrists and at the hip. Included were cardiorespiratory healthy Scots aged 55 – 75 years living near Glasgow. Bland-Altman-Plots, Pearson's correlation and linear regression were used to analyse the data. Results: Participants were on average 62.9 years old (SD 3.6) with a mean BMI of 26.7 kg/m2 (SD 5.4). With the treadmill walking, ACC measurements performed reasonably well, irrespective of placement. However, with daily activities the performance is dependent on activity type and placement, e.g. cycling was best measured on the ankle and brushing on the wrist. Measuring accuracy was dependent on age (p < 0.01) and sex (p < 0.001) for ankle placement. Age and sex did not affect the measuring accuracy of hip or wrist placement. In daily and treadmill activities is a high positive correlation between dominant and non-dominant ankle (daily: r = 1.00; treadmill: r = 0.96) and both wrists (daily: r = 0.95; treadmill r = 0.85). Conclusion: In daily activities, the best placement of the ACC depends on the type of activity. It is irrelevant, whether the device is worn on the dominant or non-dominant wrist or ankle.",
author = "L.L. Lubs and N. Muldoon and U.C. Vural and C. Drell and I. Stalling and Chris Easton and K. Bammann",
year = "2017",
month = "9",
day = "1",
doi = "10.1055/s-0037-1605795",
language = "English",
volume = "79",
pages = "656--804",
journal = "Deutsche Gesundheitswesen",
issn = "0012-0219",
publisher = "Verlag Volk und Gesundheit",
number = "8/9",

}

Validation of accelerometry with ActiGraph GT3x to estimate physical activity intensity in older adults (55 – 75 years). / Lubs, L.L.; Muldoon, N.; Vural, U.C.; Drell, C.; Stalling, I.; Easton, Chris; Bammann, K.

In: Deutsche Gesundheitswesen, Vol. 79, No. 8/9, 01.09.2017, p. 656-804.

Research output: Contribution to journalMeeting Abstract

TY - JOUR

T1 - Validation of accelerometry with ActiGraph GT3x to estimate physical activity intensity in older adults (55 – 75 years)

AU - Lubs, L.L.

AU - Muldoon, N.

AU - Vural, U.C.

AU - Drell, C.

AU - Stalling, I.

AU - Easton, Chris

AU - Bammann, K.

PY - 2017/9/1

Y1 - 2017/9/1

N2 - Background: ActiGraph is widely used to measure physical activity in field studies. However, there is limited research on the validity in older adults. As the metabolic cost of ambulation is greater in older adults and their gait can be different, this research is needed. Therefore, the aims of this study are (1) to identify the best placement for the accelerometer (ACC) and (2) to create novel equations to predict intensity of physical activity with ActiGraph. Methods: 20 participants (9 female, 11 male) performed 20 minutes of treadmill walking with increasing speed of 0.5 km/h every 4 minutes (3.0 to 5.0 km/h) and five typical daily activities (reading newspaper, shopping, brushing, cycling and aerobics) in older adults for 4 minutes each. Indirect calorimetry was used to validate the ActiGraph estimates of physical activity intensity. ACC were worn on both ankles, both wrists and at the hip. Included were cardiorespiratory healthy Scots aged 55 – 75 years living near Glasgow. Bland-Altman-Plots, Pearson's correlation and linear regression were used to analyse the data. Results: Participants were on average 62.9 years old (SD 3.6) with a mean BMI of 26.7 kg/m2 (SD 5.4). With the treadmill walking, ACC measurements performed reasonably well, irrespective of placement. However, with daily activities the performance is dependent on activity type and placement, e.g. cycling was best measured on the ankle and brushing on the wrist. Measuring accuracy was dependent on age (p < 0.01) and sex (p < 0.001) for ankle placement. Age and sex did not affect the measuring accuracy of hip or wrist placement. In daily and treadmill activities is a high positive correlation between dominant and non-dominant ankle (daily: r = 1.00; treadmill: r = 0.96) and both wrists (daily: r = 0.95; treadmill r = 0.85). Conclusion: In daily activities, the best placement of the ACC depends on the type of activity. It is irrelevant, whether the device is worn on the dominant or non-dominant wrist or ankle.

AB - Background: ActiGraph is widely used to measure physical activity in field studies. However, there is limited research on the validity in older adults. As the metabolic cost of ambulation is greater in older adults and their gait can be different, this research is needed. Therefore, the aims of this study are (1) to identify the best placement for the accelerometer (ACC) and (2) to create novel equations to predict intensity of physical activity with ActiGraph. Methods: 20 participants (9 female, 11 male) performed 20 minutes of treadmill walking with increasing speed of 0.5 km/h every 4 minutes (3.0 to 5.0 km/h) and five typical daily activities (reading newspaper, shopping, brushing, cycling and aerobics) in older adults for 4 minutes each. Indirect calorimetry was used to validate the ActiGraph estimates of physical activity intensity. ACC were worn on both ankles, both wrists and at the hip. Included were cardiorespiratory healthy Scots aged 55 – 75 years living near Glasgow. Bland-Altman-Plots, Pearson's correlation and linear regression were used to analyse the data. Results: Participants were on average 62.9 years old (SD 3.6) with a mean BMI of 26.7 kg/m2 (SD 5.4). With the treadmill walking, ACC measurements performed reasonably well, irrespective of placement. However, with daily activities the performance is dependent on activity type and placement, e.g. cycling was best measured on the ankle and brushing on the wrist. Measuring accuracy was dependent on age (p < 0.01) and sex (p < 0.001) for ankle placement. Age and sex did not affect the measuring accuracy of hip or wrist placement. In daily and treadmill activities is a high positive correlation between dominant and non-dominant ankle (daily: r = 1.00; treadmill: r = 0.96) and both wrists (daily: r = 0.95; treadmill r = 0.85). Conclusion: In daily activities, the best placement of the ACC depends on the type of activity. It is irrelevant, whether the device is worn on the dominant or non-dominant wrist or ankle.

U2 - 10.1055/s-0037-1605795

DO - 10.1055/s-0037-1605795

M3 - Meeting Abstract

VL - 79

SP - 656

EP - 804

JO - Deutsche Gesundheitswesen

JF - Deutsche Gesundheitswesen

SN - 0012-0219

IS - 8/9

ER -