The relationship between cell phone use, physical and sedentary activity, and cardiorespiratory fitness in a sample of U.S. college students

International Journal of Behavioral Nutrition and Physical Activity

Peter Gates²  Michael Rebold²  Gabriel J Sanders¹  Jacob E Barkley²  Andrew Lepp² 

[1] Department of Kinesiology and Health, Northern Kentucky University, Highland Heights, KY 41099, USA;College of Education, Health and Human Services, Kent State University, Kent, OH 44242-000, USA

关键词: Health;    mHealth;    Physical fitness;    Physical activity;    Sedentary behavior;    VO₂ peak;    Mobile phones;   

Others  :  806838
DOI  :  10.1186/1479-5868-10-79

 received in 2013-02-08, accepted in 2013-06-12,  发布年份 2013

【 摘 要 】

Background

Today’s cell phones increase opportunities for activities traditionally defined as sedentary behaviors (e.g., surfing the internet, playing video games). People who participate in large amounts of sedentary behaviors, relative to those who do not, tend to be less physically active, less physically fit, and at greater risk for health problems. However, cell phone use does not have to be a sedentary behavior as these devices are portable. It can occur while standing or during mild-to-moderate intensity physical activity. Thus, the relationship between cell phone use, physical and sedentary activity, and physical fitness is unclear. The purpose of this study was to investigate these relationships among a sample of healthy college students.

Methods

Participants were first interviewed about their physical activity behavior and cell phone use. Then body composition was assessed and the validated self-efficacy survey for exercise behaviors completed. This was followed by a progressive exercise test on a treadmill to exhaustion. Peak oxygen consumption (VO₂ peak) during exercise was used to measure cardiorespiratory fitness. Hierarchical regression was used to assess the relationship between cell phone use and cardiorespiratory fitness after controlling for sex, self-efficacy, and percent body fat. Interview data was transcribed, coded, and Chi-square analysis was used to compare the responses of low and high frequency cell phone users.

Results

Cell phone use was significantly (p = 0.047) and negatively (β = −0.25) related to cardio respiratory fitness independent of sex, self-efficacy, and percent fat which were also significant predictors (p < 0.05). Interview data offered several possible explanations for this relationship. First, high frequency users were more likely than low frequency users to report forgoing opportunities for physical activity in order to use their cell phones for sedentary behaviors. Second, low frequency users were more likely to report being connected to active peer groups through their cell phones and to cite this as a motivation for physical activity. Third, high levels of cell phone use indicated a broader pattern of sedentary behaviors apart from cell phone use, such as watching television.

Conclusion

Cell phone use, like traditional sedentary behaviors, may disrupt physical activity and reduce cardiorespiratory fitness.

【 授权许可】

   
2013 Lepp et al.; licensee BioMed Central Ltd.

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