Related Experiment Video
Updated: Aug 5, 2026
06:51
Physical Activity Measurement in Children Accepting Table Tennis Training
Published on: July 27, 2022
Measurement Reactivity to Hip-Worn Accelerometry Among Adolescent Females: A Concurrent Wear Approach
Jacob Carson1, Esmeralda Castro2, Michael Higgins3
1Herbert Wertheim School of Public Health and Human Longevity, University of California San Diego, La Jolla, California, USA.
Measurement in Physical Education and Exercise Science
|July 31, 2026
Summary
Physical activity measurement using devices like ActiGraph may cause reactivity, affecting step counts in adolescent females. Concurrent wear strategies could improve research validity.
Area of Science:
- Physical Activity Measurement
- Behavioral Reactivity
- Adolescent Health
Background:
- Device-based physical activity (PA) measurement is vital for research.
- Device reactivity can compromise the validity of PA research findings.
- Diverse populations and prior inconsistent findings necessitate novel research approaches.
Purpose of the Study:
- To assess measurement reactivity to the ActiGraph GT3X+ device.
- To examine reactivity through concurrent wear with the Fitbit Inspire HR.
- To investigate reactivity among Latina adolescents.
Main Methods:
- A person-day matched cross-sectional design was employed.
- Fitbit Inspire HR data estimated activity metrics (steps, PA, sedentary time).
- Linear models analyzed associations between ActiGraph wear and activity levels.
Main Results:
- A total of 2987 participant-days were analyzed.
- ActiGraph wear days showed a statistically significant increase of 248 average steps (p = .0499).
- Measurement reactivity to ActiGraph may influence step count data in adolescent females.
Conclusions:
- ActiGraph wear may induce reactivity, impacting step measurements in adolescent females.
- Concurrent device wear strategies are suggested for future research to enhance validity.
- Further investigation into device reactivity across diverse populations is warranted.
