Ankle Accelerometry for Assessing Physical Activity Among Adolescent Girls: Threshold Determination, Validity, Reliability, and Feasibility

Hager, Erin R.; Treuth, Margarita S.; Gormely, Candice; Epps, LaShawna; Snitker, Søren; Black, Maureen M.

doi:10.1080/02701367.2015.1063574

Cited by 24 publications

(32 citation statements)

References 35 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Although the hip is the most widely used accelerometer placement site, it is important to explore alternative sites as public health interventions aim to increase wear time compliance and accurate predictions of EE. Previous studies have explored the use of the ankle site in adults (Heil, 2006; Hibbing et al, 2017; Kim et al, 2014; Leenders et al, 2003; Melanson & Freedson, 1995) and youth (de Vries et al, 2011; Hager et al, 2015; Heil, 2006) and have shown conflicting results. de Vries et al (2011), using the ActiGraph accelerometer, showed that the hip, compared to the ankle, was more accurate for predicting PA type using artificial neural networks.…”

Section: Discussionmentioning

confidence: 99%

“…In comparison, NHANES 2003–2006, which used a hip worn accelerometer, had valid data across the same age range in 618 of 987 participants (62.6%), and on average had 61.8 fewer minutes of waking wear time than U.S. ISCOLE participants (Tudor-Locke et al, 2015). Hager and colleagues (Hager et al, 2015) used an ankle-worn Actical accelerometer for a 7-day free-living measurement in adolescent girls, using a 24-hr wear protocol and showed the Actical device to be valid, reliable, and feasible for use on the ankle in adolescent females. Of primary importance was that during the 7-day free-living measurement, 99.6% of the 459 eligible participants agreed to wear the Actical and 386 (84.1%) had valid data at the end of the 7-day measurement, with an average wear time of approximately 1437 min/d.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Estimating physical activity in youth using an ankle accelerometer

Crouter

Oody

Bassett

2018

Journal of Sports Sciences

View full text Add to dashboard Cite

This study developed and validated a vector magnitude (VM) two-regression model (2RM) for use with an ankle-worn ActiGraph accelerometer. For model development, 181 youth (mean ± SD; age, 12.0 ± 1.5 yr) completed 30 min of supine rest and 2-7 structured activities. For cross-validation, 42 youth (age, 12.6 ± 0.8 yr) completed approximately 2 hr of unstructured physical activity (PA). PA data were collected using an ActiGraph accelerometer, (non-dominant ankle) and the VM was expressed as counts/5-s. Measured energy expenditure (Cosmed K4b) was converted to youth METs (MET; activity VO divided by resting VO). A coefficient of variation (CV) was calculated for each activity to distinguish continuous walking/running from intermittent activity. The ankle VM sedentary behavior threshold was ≤10 counts/5-s, and a CV≤15 counts/5-s was used to identify walking/running. The ankle VM2RM was within 0.42 MET of measured MET during the unstructured PA (P > 0.05). The ankle VM2RM was within 5.7 min of measured time spent in sedentary, LPA, MPA, and VPA (P > 0.05). Compared to the K4b, the ankle VM2RM provided similar estimates to measured values during unstructured play and provides a feasible wear location for future studies.

show abstract

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Estimating physical activity in youth using an ankle accelerometer

Crouter

Oody

Bassett

2018

Journal of Sports Sciences

View full text Add to dashboard Cite

show abstract

“…The distribution of the means and standard deviations of the activity counts by intensity were examined graphically to identify clusters for each activity level [45]. Three researchers with accelerometry experience agreed upon thresholds for sedentary/light and light/MVPA to be tested.…”

Section: Methodsmentioning

confidence: 99%

Toddler physical activity study: laboratory and community studies to evaluate accelerometer validity and correlates

et al. 2016

Self Cite

View full text Add to dashboard Cite

BackgroundToddlerhood is an important age for physical activity (PA) promotion to prevent obesity and support a physically active lifestyle throughout childhood. Accurate assessment of PA is needed to determine trends/correlates of PA, time spent in sedentary, light, or moderate-vigorous PA (MVPA), and the effectiveness of PA promotion programs. Due to the limited availability of objective measures that have been validated and evaluated for feasibility in community studies, it is unclear which subgroups of toddlers are at the highest risk for inactivity. Using Actical ankle accelerometry, the objectives of this study are to develop valid thresholds, examine feasibility, and examine demographic/ anthropometric PA correlates of MVPA among toddlers from low-income families.MethodsTwo studies were conducted with toddlers (12–36 months). Laboratory Study (n = 24)- Two Actical accelerometers were placed on the ankle. PA was observed using the Child Activity Rating Scale (CARS, prescribed activities). Analyses included device equivalence reliability (correlation: activity counts of two Acticals), criterion-related validity (correlation: activity counts and CARS ratings), and sensitivity/specificity for thresholds. Community Study (n = 277, low-income mother-toddler dyads recruited)- An Actical was worn on the ankle for > 7 days (goal >5, 24-h days). Height/weight was measured. Mothers reported demographics. Analyses included frequencies (feasibility) and stepwise multiple linear regression (sMLR).ResultsLaboratory Study- Acticals demonstrated reliability (r = 0.980) and validity (r = 0.75). Thresholds demonstrated sensitivity (86 %) and specificity (88 %). Community Study- 86 % wore accelerometer, 69 % had valid data (mean = 5.2 days). Primary reasons for missing/invalid data: refusal (14 %) and wear-time ≤2 days (11 %). The MVPA threshold (>2200 cpm) yielded 54 min/day. In sMLR, MVPA was associated with age (older > younger, β = 32.8, p < 0.001), gender (boys > girls, β = −11.21, p = 0.032), maternal MVPA (β = 0.44, p = 0.002) and recruitment location (suburban > urban, β = 19.6, p < 0.001), or race (non-Black > Black, β = 18.5, p = 0.001). No association with toddler weight status.ConclusionsAnkle accelerometry is a valid, reliable, and feasible method of assessing PA in community studies of toddlers from low-income families. Sub-populations of toddlers may be at increased risk for inactivity, including toddlers that are younger, female, Black, those with less active mothers, and those living in an urban location.

show abstract

“…First and last days, and days with incomplete 24-hour data were removed. Validated Actical ankle accelerometry thresholds for moderate/ vigorous physical activity (MVPA) 25 were applied, yielding MVPA (minutes/day).…”

Section: Moderate/vigorous Physical Activitymentioning

confidence: 99%

A Dyadic Analysis on Source Discrepancy and a Mediation Analysis via Self-Efficacy in the Parental Support and Physical Activity Relationship among Black Girls

et al. 2019

Self Cite

View full text Add to dashboard Cite

Background: Physical activity (PA) declines in adolescence among black girls. This study assesses how moderate/vigorous physical activity (MVPA) relates to caregiver-vs. adolescent-reported parental support and whether the relationship is mediated by self-efficacy. Methods: MVPA was assessed through accelerometry. Parental support and encouragement on adolescents' PA were reported by caregivers and adolescents with a 10-item Social Support and Exercise Survey. Adolescent-reported self-efficacy related to PA was assessed with an 8-item scale. Structural equation modeling assessed source variation (caregiver vs. adolescent report) in the relationship between parental support and MVPA and mediation through adolescent self-efficacy. Results: The sample includes black adolescent girls (n = 272), with mean age of 11.6 years (standard deviation = 0.7), and average MVPA/day of 40.6 minutes. Caregiver/adolescent agreement on parental support was low (weighted Kappa <0.20). There was significant source variation in the parental support-MVPA relationship (Wald v 2 = 4.18, df = 1, p = 0.041); adolescent-reported support was related to MVPA (b = 0.40, standard error = 0.14, p = 0.003) and mediated through self-efficacy (95% bootstrapped confidence interval: 0.05-0.29). Caregiver-reported support or BMI z-score was not related to MVPA. Conclusions: The association between MVPA and adolescent-reported parental support among black adolescent girls is explained by positive self-efficacy. Findings suggest that effective adolescent/caregiver communication around parental support on PA relates to high adolescent self-efficacy and supports objectively measured PA. Additional research is merited to examine longitudinal patterns. Furthermore, although 51.5% of girls in the sample were overweight or obese, the lack of association between MVPA and body composition minimizes its implication for mitigating obesity among overweight/obese black adolescent girls.

show abstract

Ankle Accelerometry for Assessing Physical Activity Among Adolescent Girls: Threshold Determination, Validity, Reliability, and Feasibility

Cited by 24 publications

References 35 publications

Estimating physical activity in youth using an ankle accelerometer

Estimating physical activity in youth using an ankle accelerometer

Toddler physical activity study: laboratory and community studies to evaluate accelerometer validity and correlates

A Dyadic Analysis on Source Discrepancy and a Mediation Analysis via Self-Efficacy in the Parental Support and Physical Activity Relationship among Black Girls

Contact Info

Product

Resources

About