The Impact of E-diaries and Accelerometers on Young Adults' Perceived and Objectively Assessed Physical Activity.

Autor: Eisenberg MH; Health Behavior Branch, Division of Intramural Population Health Research, Eunice Kennedy Shriver National Institute of Child Health and Human Development, Bethesda, MD., Phillips LA; Iowa State University, Department of Psychology, Ames, Iowa., Fowler L; The George Washington University, Department of Psychology, Washington, DC., Moore PJ; The George Washington University, Department of Psychology, Washington, DC.
Jazyk: angličtina
Zdroj: Psychology of sport and exercise [Psychol Sport Exerc] 2017 May; Vol. 30, pp. 55-63. Date of Electronic Publication: 2017 Jan 31.
DOI: 10.1016/j.psychsport.2017.01.008
Abstrakt: Objective: E-diaries and accelerometers promise more objective, real-time measurements of health behavior. However, social-psychological theory suggests that using electronic behavioral monitoring may influence rather than just record physical activity (PA), especially when a device is novel.
Design: Participants (n=146) were randomly assigned to either an accelerometer-only, e-diary-only, accelerometer+e-diary, or a no-technology control group for one week to assess how these technologies influenced PA, both perceived and actual, in young adults.
Method: Participants reported their PA, overall and number of discrete exercise sessions (DES) at baseline and follow-up; accelerometers provided daily step counts and e-diaries captured daily reports of PA for the active week of the study.
Results: Average daily steps in the accelerometer-only and accelerometer+e-diary groups did not differ nor did daily reports of PA via e-diary compared to accelerometer+e-diary group, showing that neither technology affected actual PA. ANCOVAS tested group differences in perceived PA; The accelerometer-only group had increased perceived overall PA but not DES compared to no-technology control.
Conclusions: Accelerometers may increase perceived overall PA, but the tested technologies did not increase DES or actual PA, suggesting that they may be viable unbiased measures of PA.
Competing Interests: The authors declare that they have no conflicts of interest.
Databáze: MEDLINE
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