The Relationship between Physical Activity and Body Mass Index with Reaction Time in the University Administrative Staff



Background: Today, physical activity as an important topic in physiology has attracted the attention of many researchers. The reaction time (simple, diagnostic and selective) which depends on the time of stimulation of sensory receptors, is an important factor in many movement functions. In this study, the authors attempted to evaluate the relation between physical activity and reaction time in adults.
Methods: This cross-sectional study was carried out on 82 male administrative staff using simple random sampling. The Iranian version of the International Physical Activity Questionnaire (IPAQ) and a Reaction Timer were used to determine physical activity and reaction time, respectively. Data analysis was carried out by SPSS 20 and Pearson correlation coefficient.
Results: There was a significant relation between reaction times and physical activity with age (p <0.05), while there was no significant relation between selective reaction time and physical activity with work experience. Also, there was a significant correlation between simple reaction time and physical activity with body mass index (BMI) (p <0.05), but no significant correlation was found between diagnostic and selective reaction time with BMI. Moreover, a significant relation was found between the types of reaction times and physical activity (p <0.05).
Conclusion: According to the results, by increased physical activity the reaction time decreases. So, for employees whose jobs require rapid reaction and high precision, increasing physical activity for reducing the reaction time, and ultimately improving the job performance is recommended.


1. Lee PH, Macfarlane DJ, Lam TH, Stewart SM. Validity of the International Physical Activity Questionnaire Short Form (IPAQ-SF): a systematic review. Int J Behav Nutr Phys Act 2011;8:115. doi: 10.1186/1479-5868-8-115. 2. Grabara M, Nawrocka A, Powerska-Didkowska A. The relationship between physical activity and work ability - A cross-sectional study of teachers. Int J Occup Med Environ Health 2018;31(1):1-9. doi: 10.13075/ijomeh.1896.01043. 3. Ghasemi A, Ghaneie M, Asgari A. Measurement of maximum oxygen uptake and maximum heart rate in chemically injured individuals and comparison with predicted values. Quarterly Kowsar Medical Journal 2005;10(03):201-6. 4. Piccinno A, Colella D. Differences in cardiovascular fitness of Italian high-school adolescents according to different physical activity levels assessed by IPAQ-A: a cross-sectional study. Sport Sciences for Health 2017; 13(1):149-55. doi: 10.1007/s11332-016-0326-5 5. Ziaei M, Amiri S. The relationship between reaction time, intelligence, and anxiety. Developmental Psychology. Journal of Iranian Psychologists 2006; 3(9): 53 - 61. [In Persian] 6. Vasheghani-Farahani A, Tahmasbi M, Asheri H, Ashraf H, Nedjat S, Kordi R. The Persian, last 7-day, long form of the International Physical Activity Questionnaire: translation and validation study. Asian J Sports Med 2011;2(2):106-16. 7. Lee JK, Koh AC, Koh SX, Liu GJ, Nio AQ, Fan PW. Neck cooling and cognitive performance following exercise-induced hyperthermia. Eur J Appl Physiol 2014;114(2):375-84. doi: 10.1007/s00421-013-2774-9. 8. Kazemi R, Haidarimoghadam R, Motamedzadeh M, Golmohamadi R, Soltanian A, Zoghipaydar MR. Effects of shift work on cognitive performance, sleep quality, and sleepiness among petrochemical control room operators. J Circadian Rhythms 2016; 14: 1. doi: 10.5334/jcr.134 9. Haidarimoghadam R, Kazemi R, Motamedzadeh M, Golmohamadi R, Soltanian A, Zoghipaydar MR. The effects of consecutive night shifts and shift length on cognitive performance and sleepiness: a field study. Int J Occup Saf Ergon 2017;23(2):251-258. doi: 10.1080/10803548.2016.1244422. 10. Schwarz JF, Popp R, Haas J, Zulley J, Geisler P, Alpers GW, et al. Shortened night sleep impairs facial responsiveness to emotional stimuli. Biol Psychol 2013;93(1):41-4. doi: 10.1016/j.biopsycho.2013.01.008. 11. Nikam LH, Gadkari JV. Effect of age, gender and body mass index on visual and auditory reaction times in Indian population. Indian J Physiol Pharmacol 2012;56(1):94-9. 12. Kosinski RJ. A literature review on reaction time. Clemson University; 2008. [cited 2018 Apr 30]. 13. Deore DN, Surwase SP, Masroor S, Khan ST, Kathore V. A Cross sectional study on the relationship between the Body Mass Index (BMI) and the Audiovisual Reaction Time (ART). J Clin Diagn Res 2012;6(9):1466-8. doi: 10.7860/JCDR/2012/4440.2534. 14. Frolov AA, Prokopenko RA, Dufosse M, Ouezdou FB. Adjustment of the human arm viscoelastic properties to the direction of reaching. Biol Cybern 2006;94(2):97-109. doi: 10.1007/s00422-005-0018-8 15. Ghaderi A, Mostafavi F, Mahaki B, Sadeghi E, Afkhamzadeh A, Zarezadeh Y. Background determinants of physical activity among Iranian nurses: a cross sectional study. World Family Medicine 2018;7(10):152. doi: 10.5742/MEWFM.2018.93255 16. Gharlipour Gharghani Z, Sayarpour SM, Moeini B. Associated factors with regular physical activity among emergency medical personnel in Hamadan: Applying Health Belief Model. J Health Syst Res 2011;7(6):710-7. [In Persian] 17. Jalilian F, Emdadi S, Mirzaie M, Barati M. The survey physical activity status of employed women in Hamadan University of Medical Sciences: the relationship between the benefits, barriers, self- efficacy and stages of change. Toloo-E-Behdasht 2011;9(4):89-98. Persian 18. Moeini B, Jalilian F, Jalilian M, Barati M. Predicting factors associated with regular physical activity among college students applying BASNEF model. Avicenna Journal of Clinical Medicine 2011;18(3):70-6. [In Persian] 19. Vafaee Njar A, Vahedian Shahrvdy M, Dogonchi M, Dogonchi AM. The effectiveness of physical activity training on emotional exhaustion of employees in city of Agh Ghala -2013. Pajouhan Scientific Journal 2017;15(2):20-6. Persian 20. Skaal L, Pengpid S. The predictive validity and effects of using the transtheoretical model to increase the physical activity of healthcare workers in a public hospital in South Africa. Transl Behav Med 2012;2(4):384-391. doi:10.1007/s13142-012-0136-5 21. Burton NW, Turrell G. Occupation, hours worked, and leisure-time physical activity. Prev Med 2000;31(6):673-81. doi:10.1006/pmed.2000.0763 22. Kim Y, White T. Adiposity and grip strength as long-term predictors of objectively measured physical activity in 93 015 adults: the UK Biobank study. Int J Obes (Lond) 2017;41(9):1361-8. doi: 10.1038/ijo.2017.122. 23. Khezri A, Arab Ameri E, Hemayattalab R, Ebrahimi R. The effect of sports and physical activity on elderly reaction time and response time. Iranian Journal of Ageing 2014;9(2):106-13. Persian 24. Taheri M, Irandoost K, Yousefi S, Jamali A. Effect of 8-week lower extremity weight-bearing exercise protocol and acute caffeine consumption on reaction time in postmenopausal women. Iranian Journal of Ageing 2017;12(1):18-29. Persian doi: 10.21859/sija-120116