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106 results on '"NOVOTNY, ERIC"'

4. Agreement between Fitbit and ActiGraph Estimates of Physical Activity in Young Children

Author

Schmidt, Michael D., Rathbun, Stephen L., Chu, Zhixuan, Boudreaux, Benjamin D., Hahn, Lindsay, Novotny, Eric, Johnsen, Kyle, and Ahn, Sun Joo

Abstract

Physical activity (PA) estimates from the Fitbit Flex 2 were compared to those from the ActiGraph GT9X Link in 123 elementary school children. Steps and intensity-specific estimates of PA and 3-month PA change were calculated using two different ActiGraph cut-points (Evenson and Romanzini). Fitbit estimates were 35% higher for steps compared to the ActiGraph. Fitbit and ActiGraph intensity-specific estimates were closest for sedentary and light PA, while estimates of moderate and vigorous PA varied substantially depending upon the ActiGraph cut-points used. Spearman correlations between device estimates were higher for steps (r[subscript s] = 0.70) than for moderate (r[subscript s] = 0.54 to 0.55) or vigorous (r[subscript s] = 0.29 to 0.48) PA. There was low concordance between devices in assessing PA changes over time. Agreement between Fitbit Flex 2 and ActiGraph estimates may depend upon the cut-points used to classify PA intensity. However, there is fair to good agreement between devices in ranking children's steps and MVPA.

Published
2023
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26. Agreement between Fitbit and ActiGraph Estimates of Physical Activity in Young Children.

Author

Schmidt, Michael D, Rathbun, Stephen L., Chu, Zhixuan, Boudreaux, Benjamin D., Hahn, Lindsay, Novotny, Eric, Johnsen, Kyle, and Ahn, Sun Joo

Subjects
PHYSICAL fitness mobile apps, SEDENTARY lifestyles, STATISTICS, WEARABLE technology, ACTIGRAPHY, PHYSICAL activity, RESEARCH funding, EXERCISE intensity, DESCRIPTIVE statistics, SCHOOL children, DATA analysis, CHILDREN
Abstract

Physical activity (PA) estimates from the Fitbit Flex 2 were compared to those from the ActiGraph GT9X Link in 123 elementary school children. Steps and intensity-specific estimates of PA and 3-month PA change were calculated using two different ActiGraph cut-points (Evenson and Romanzini). Fitbit estimates were 35% higher for steps compared to the ActiGraph. Fitbit and ActiGraph intensity-specific estimates were closest for sedentary and light PA, while estimates of moderate and vigorous PA varied substantially depending upon the ActiGraph cut-points used. Spearman correlations between device estimates were higher for steps (rs =.70) than for moderate (rs =.54 to.55) or vigorous (rs =.29 to.48) PA. There was low concordance between devices in assessing PA changes over time. Agreement between Fitbit Flex 2 and ActiGraph estimates may depend upon the cut-points used to classify PA intensity. However, there is fair to good agreement between devices in ranking children's steps and MVPA. [ABSTRACT FROM AUTHOR]

Published
2023
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49. The effect of moral intuitions on decisions in video game play: The impact of chronic and temporary intuition accessibility.

Author

Tamborini, Ron, Bowman, Nicholas David, Prabhu, Sujay, Hahn, Lindsay, Klebig, Brian, Grall, Clare, and Novotny, Eric

Subjects
PSYCHOLOGY & ethics, VIDEO games & psychology, INTUITION, VIDEO games, MORAL agent (Philosophy), PSYCHOLOGICAL disengagement, VIDEO game design, ETHICS
Abstract

The model of intuitive morality and exemplars (MIME) highlights the central influence of innate moral instincts (or intuitions) in media use. Recent experimental research on the MIME found that moral intuitions that are chronically accessible in video gamers are likely to influence players to uphold related moral principles in the game. This study replicated and extended this research to examine the influence of both chronic and temporary accessibility of moral intuitions. Discussion focuses on the prospect that while chronic accessibility should be a better predictor of behavior in most cases, there are proximal in-game instances where environmental cues temporarily increase the accessibility of other moral intuitions. This suggests that (a) players do not necessarily disengage their morals during gameplay, and that moral intuitions influence their in-game decisions, and that (b) this influence is not fixed, but can be continuously modulated by game design features. [ABSTRACT FROM AUTHOR]

Published
2018
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