Cross-generational comparability of hip- and wrist-worn ActiGraph GT3X+, wGT3X-BT, and GT9X accelerometers during free-living in adults

Clevenger, Kimberly A.; Pfeiffer, Karin A.; Montoye, Alexander H.K.

doi:10.1080/02640414.2020.1801320

Cited by 29 publications

(16 citation statements)

References 43 publications

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“…This is supported by freeliving research in children that indicated strong correlations between waist-worn wGT3X-BT and GT9X monitors for mean VM counts and MAD (r=0.996 for both), but a lower (albeit still classified as moderately high) correlation for mean ENMO (r=0.618) and lack of equivalence for mean ENMO between monitors (Clevenger et al, 2020b). The equivalence of the accelerationbased metric MAD in the present study is supported by prior research in free-living adults wearing a wGT3X-BT and GT9X at the hip (Clevenger et al, 2020a). While interest in acceleration-based metrics from ActiGraph monitors is growing, comparability of specific metrics should be considered before widespread implementation as current evidence supports inter-monitor comparability of only the MAD metric.…”

Section: Discussionsupporting

confidence: 79%

“…indicating that greater caution should be taken when comparing estimates at epoch-level resolution. This difference was largest for the acceleration-based metric ENMO (92.8%) which is in line with prior research comparing two models of ActiGraph devices worn side-by-side in children (mean absolute percent difference in ENMO of 110.9%) (Clevenger et al, 2020b) and adults (80.9%) (Clevenger et al, 2020a). Conversely, the MAD metric had a lower percent difference (68.0%); it may be less impacted by epoch-level fluctuations because it is an indication of variability, not necessarily magnitude, of acceleration over the 5-s epoch.…”

supporting

confidence: 89%

“…In this method, 90% confidence intervals around the mean difference for each variable are constructed and if the confidence interval does not overlap or exceed the equivalence bounds, then the monitors are considered equivalent (p<0.05). Similar to prior research (Clevenger et al, 2020a(Clevenger et al, , 2020b, equivalence bounds were initially set as 5% of the mean value for each variable.…”

Section: Methodsmentioning

confidence: 99%

“…Perhaps more importantly, the free-living comparability of the ActiGraph in general has not been well researched for measuring acceleration-based metrics, like Euclidean Norm Minus One (ENMO) (Bakrania et al, 2016;van Hees et al, 2014;van Hees et al, 2013) or Mean Amplitude Deviation (MAD) (Aittasalo et al, 2015;Bakrania et al, 2016;. In children and adults, the acceleration-based metric ENMO has demonstrated poorer reliability than MAD, vector magnitude (VM) counts, or VM acceleration (Clevenger et al, 2020a(Clevenger et al, , 2020b.…”

Section: Introductionmentioning

confidence: 99%

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Impact of ActiGraph Sampling Rate and Intermonitor Comparability on Measures of Physical Activity in Adults

Clevenger

Brønd

Arvidsson

et al. 2021

Journal for the Measurement of Physical Behaviour

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Background: ActiGraph is a commonly used, research-grade accelerometer brand, but there is little information regarding intermonitor comparability of newer models. In addition, while sampling rate has been shown to influence accelerometer metrics, its influence on measures of free-living physical activity has not been directly studied. Purpose: To examine differences in physical activity metrics due to intermonitor variability and chosen sampling rate. Methods: Adults (n = 20) wore two hip-worn ActiGraph wGT3X-BT monitors for 1 week, with one accelerometer sampling at 30 Hz and the other at 100 Hz, which was downsampled to 30 Hz. Activity intensity was classified using vector magnitude, Euclidean Norm Minus One (ENMO), and mean amplitude deviation (MAD) cut points. Equivalence testing compared outcomes. Results: There was a lack of intermonitor equivalence for ENMO, time in sedentary/light- or moderate-intensity activity according to ENMO cut points, and time in moderate-intensity activity according to MAD cut points. Between sampling rates, differences existed for time in moderate-intensity activity according to vector magnitude, ENMO, and MAD cut points, and time in sedentary/light-intensity activity according to ENMO cut points. While mean differences were small (0.1–1.7 percentage points), this would equate to differences in moderate-to vigorous-intensity activity over a 10-hr wear day of 3.6 (MAD) to 10.8 (ENMO) min/day for intermonitor comparisons or 3.6 (vector magnitude) to 5.4 (ENMO) min/day for sampling rate. Conclusions: Epoch-level intermonitor differences were larger than differences due to sampling rate, but both may impact outcomes such as time spent in each activity intensity. ENMO was the least comparable metric between monitors or sampling rates.

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Section: Discussionsupporting

confidence: 79%

supporting

confidence: 89%

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Impact of ActiGraph Sampling Rate and Intermonitor Comparability on Measures of Physical Activity in Adults

Clevenger

Brønd

Arvidsson

et al. 2021

Journal for the Measurement of Physical Behaviour

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show abstract

“…Due to limited funding, two accelerometer models were used (ActiGraph GT3X and wGT3X-BT), which measured acceleration at a sampling rate of 30 Hz to generate activity counts/60s. Published research suggests comparability between accelerometer models [75]. Non-wear time was defined as 60 min of continuous zeros and at least four days, of at least 480 min of valid wear data, were required for inclusion in subsequent analysis [76,77].…”

Section: Physical Activity Levelsmentioning

confidence: 99%

Feelings of safety during daytime walking: associations with mental health, physical activity and cardiometabolic health in high vacancy, low-income neighborhoods in Detroit, Michigan

et al. 2021

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Introduction Individuals living in low-income neighborhoods have disproportionately high rates of obesity, Type-2 diabetes, and cardiometabolic conditions. Perceived safety in one’s neighborhood may influence stress and physical activity, with cascading effects on cardiometabolic health. Methods In this study, we examined relationships among feelings of safety while walking during the day and mental health [perceived stress (PSS), depression score], moderate-to-vigorous physical activity (PA), Body Mass Index (BMI), and hemoglobin A1C (A1C) in low-income, high-vacancy neighborhoods in Detroit, Michigan. We recruited 69 adults who wore accelerometers for one week and completed a survey on demographics, mental health, and neighborhood perceptions. Anthropometrics were collected and A1C was measured using A1CNow test strips. We compiled spatial data on vacant buildings and lots across the city. We fitted conventional and multilevel regression models to predict each outcome, using perceived safety during daytime walking as the independent variable of interest and individual or both individual and neighborhood-level covariates (e.g., number of vacant lots). Last, we examined trends in neighborhood features according to perceived safety. Results In this predominantly African American sample (91%), 47% felt unsafe during daytime walking. Feelings of perceived safety significantly predicted PSS (β = − 2.34, p = 0.017), depression scores (β = − 4.22, p = 0.006), and BMI (β = − 2.87, p = 0.01), after full adjustment. For PA, we detected a significant association for sex only. For A1C we detected significant associations with blighted lots near the home. Those feeling unsafe lived in neighborhoods with higher park area and number of blighted lots. Conclusion Future research is needed to assess a critical pathway through which neighborhood features, including vacant or poor-quality green spaces, may affect obesity—via stress reduction and concomitant effects on cardiometabolic health.

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Associations between physical activity, sedentary time, and neurocognitive function during adolescence: Evidence from accelerometry and the flanker P300

Brush,

Keith,

Santopetro

et al. 2024

Progress in Brain Research

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Cross-generational comparability of hip- and wrist-worn ActiGraph GT3X+, wGT3X-BT, and GT9X accelerometers during free-living in adults

Cited by 29 publications

References 43 publications

Impact of ActiGraph Sampling Rate and Intermonitor Comparability on Measures of Physical Activity in Adults

Impact of ActiGraph Sampling Rate and Intermonitor Comparability on Measures of Physical Activity in Adults

Feelings of safety during daytime walking: associations with mental health, physical activity and cardiometabolic health in high vacancy, low-income neighborhoods in Detroit, Michigan

Associations between physical activity, sedentary time, and neurocognitive function during adolescence: Evidence from accelerometry and the flanker P300

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