Advertisement

Combined effect of whole-body vibration and ambient lighting on human discomfort, heart rate, and reaction time

  • Mohammad Reza Monazzam
  • Esmaeil Shoja
  • Seyed Abolfazl Zakerian
  • Abbas Rahimi Foroushani
  • Mohsen Shoja
  • Masoumeh Gharaee
  • Amin Asgari
Original Article
  • 142 Downloads

Abstract

Purpose

This study aimed to investigate the effect of whole-body vibration and ambient lighting, as well as their combined effect on human discomfort, heart rate, and reaction time in laboratory conditions.

Methods

44 men were recruited with an average age of 25.4 ± 1.9 years. Each participant was subjected to 12 experimental steps, each step lasting five minutes for four different vibration accelerations in X, Y, and Z axes at a fixed frequency; three different lighting intensities of 50, 500, and 1000 lx were also considered. At each step, a visual computerized reaction test was taken from subjects and their heart rate recorded by pulse oximeter. In addition, the discomfort rate of subjects was measured using Borg scale.

Results

Increasing vibration acceleration significantly increased the discomfort rate and heart beat but not the reaction time. Lack of lighting caused more discomfort in the subjects, but there was no significant correlation between lighting intensity with heart rate and reaction time. The results also showed that the combined effect of vibration and lighting had no significant effect on any of the discomfort, heart rate, and reaction time variables.

Conclusions

Whole-body vibration is an important factor in the development of human subjective and physiological reactions compared to lighting. Therefore, consideration of the level of vibration to which an individual is exposed in workplaces subject to vibration plays an important role in reducing the level of human discomfort, but its interaction with ambient lighting does not have a significant effect on human subjective and physiological responses.

Keywords

Discomfort Whole-body vibration Reaction time Lighting intensity Heart rate 

Notes

Acknowledgements

The authors would like to express their gratitude to the students from the School of Health for contributing to the project. They also thank Tehran University of Medical Sciences (TUMS) who provided financial and scientific support for this research.

Funding

This study was funded by Grants from the Tehran University of Medical Sciences (TUMS) (Grant no.: 91-03-101-18152).

Compliance with ethical standards

Conflict of interest

The authors declare that they have no conflict of interest.

Ethical approval

All procedures involving human participants were approved for human subject protection by the Ethics Committee of Tehran University of Medical Sciences.

Informed consent

Informed consent was obtained from all individual participants included in the study.

References

  1. Aries MM (2005) Human lighting demands: healthy lighting in an office environment. Technische Universiteit Eindhoven, Eindhoven. http://repository.tue.nl/594257
  2. Banbury JR, Schmit VP, Gibson CP, Whitfield FB (1987) Visual perception of direct-view and collimated displays under vibration. Displays 8(1):3–16.  https://doi.org/10.1016/0141-9382(87)90002-3 CrossRefGoogle Scholar
  3. Basri B, Griffin MJ (2013) Predicting discomfort from whole-body vertical vibration when sitting with an inclined backrest. Appl Ergon 44(3):423–434.  https://doi.org/10.1016/j.apergo.2012.10.006 CrossRefGoogle Scholar
  4. Bhalchandra J (2008) Development of continuous subjective and physiological assessment techniques for the determination of discomfort and activity interference in transportation systems. Dissertation of Master of TechnologyGoogle Scholar
  5. Bhiwapurkar MK, Saran VH, Harsha SP (2011) Objective and subjective responses of seated subjects while reading Hindi newspaper under multi axis whole-body vibration. Int J Ind Ergon 41(6):625–633.  https://doi.org/10.1016/j.ergon.2011.06.004 CrossRefGoogle Scholar
  6. Bobick TG, Unger RL, Gallagher S, Doyle-Coombs DM (1988) Physiological responses and subjective discomfort of simulated whole-body vibration from a mobile underground mining machine. Proc Hum Factors Soc Annu Meet 32(11):719–723.  https://doi.org/10.1518/107118188786762559 CrossRefGoogle Scholar
  7. Borg G (1998) Borg’s perceived exertion and pain scales. Hum KinetGoogle Scholar
  8. Edwards C (2015) Lighting levels for isolated intersections: leading to safety improvements (MN/RC 2015-05). Retrieved from Minnesota Department of Transportation, Research Services and LibraryGoogle Scholar
  9. El Falou W, Duchene J, Grabisch M, Hewson D, Langeron Y, Lino F (2003) Evaluation of driver discomfort during long-duration car driving. Appl Ergon 34(3):249–255.  https://doi.org/10.1016/s0003-6870(03)00011-5 CrossRefGoogle Scholar
  10. Griffin MJ (1996) Handbook of human vibration. Academic Press, LondonGoogle Scholar
  11. Guignard JC (1972) Aeromedical aspects of vibration and noise, Part 2. Vibration (AGARD-AG-151), pp 114–203Google Scholar
  12. Jazani RK, Saremi M, Kavousi A, Monazam MR, Abedi M (2012) The effect of whole-body vibration on vehicle driver’s reaction time and mental and physiological workload. J Army Univ Med Sci 10(4):278–284Google Scholar
  13. Kang SR, Min J-Y, Yu C, Kwon T-K (2017) Effect of whole body vibration on lactate level recovery and heart rate recovery in rest after intense exercise. Technol Health Care 25(S1):115–123.  https://doi.org/10.3233/thc-171313 CrossRefGoogle Scholar
  14. Kittusamy NK, Buchholz B (2004) Whole-body vibration and postural stress among operators of construction equipment: a literature review. J Saf Res 35(3):255–261.  https://doi.org/10.1016/j.jsr.2004.03.014 CrossRefGoogle Scholar
  15. Kumar V, Saran VH (2014) Influence of reading format on reading activity under uniaxial whole body vibration. Int J Ind Ergon 44(4):520–527.  https://doi.org/10.1016/j.ergon.2014.05.004 CrossRefGoogle Scholar
  16. Mansfield NJ (2004) Human response to vibration. Taylor & Francis, Boca RatonCrossRefGoogle Scholar
  17. Mansfield N, Sammonds G, Nguyen L (2015) Driver discomfort in vehicle seats—effect of changing road conditions and seat foam composition. Appl Ergon 50:153–159.  https://doi.org/10.1016/j.apergo.2015.03.010 CrossRefGoogle Scholar
  18. Mulder M, Abbink DA (2016) Subjective perception of discomfort due to vehicle vibrations in the sagittal plane. IFAC Pap OnLine 49(19):494–499.  https://doi.org/10.1016/j.ifacol.2016.10.639 CrossRefGoogle Scholar
  19. Newell GS, Mansfield NJ (2008) Evaluation of reaction time performance and subjective workload during whole-body vibration exposure while seated in upright and twisted postures with and without armrests. Int J Ind Ergon 38(5–6):499–508.  https://doi.org/10.1016/j.ergon.2007.08.018 CrossRefGoogle Scholar
  20. Oborne DJ (1983) Whole-body vibration and International Standard ISO 2631: a critique. Hum Factors 25(1):55–69.  https://doi.org/10.1177/001872088302500106 doiCrossRefGoogle Scholar
  21. Rom WN, Markowitz SB (2007) Environmental and occupational medicine. Lippincott Williams & Wilkins, PhiladelphiaGoogle Scholar
  22. Schust M, Blüthner R, Seidel H (2006) Examination of perceptions (intensity, seat comfort, effort) and reaction times (brake and accelerator) during low-frequency vibration in x- or y-direction and biaxial (xy-) vibration of driver seats with activated and deactivated suspension. J Sound Vib 298(3):606–626.  https://doi.org/10.1016/j.jsv.2006.06.029 CrossRefGoogle Scholar
  23. Shibata N (2015) Subjective response of standing persons exposed to fore-aft, lateral and vertical whole-body vibration. Int J Ind Ergon 49:116–123.  https://doi.org/10.1016/j.ergon.2015.01.012 CrossRefGoogle Scholar
  24. Shin JY, Yun GY, Kim JT (2012) View types and luminance effects on discomfort glare assessment from windows. Energy Build 46:139–145.  https://doi.org/10.1016/j.enbuild.2011.10.036 CrossRefGoogle Scholar
  25. Torvinen S, Kannus P, Sievanen H, Jarvinen TA, Pasanen M, Kontulainen S, Vuori I (2002) Effect of four-month vertical whole body vibration on performance and balance. Med Sci Sports Exerc 34(9):1523–1528CrossRefGoogle Scholar
  26. Wang L, Zhao M, Ma J, Tian S, Xiang P, Yao W, Fan Y (2014) Effect of combining traction and vibration on back muscles, heart rate and blood pressure. Med Eng Phys 36(11):1443–1448.  https://doi.org/10.1016/j.medengphy.2014.08.008 CrossRefGoogle Scholar

Copyright information

© Springer-Verlag GmbH Germany, part of Springer Nature 2018

Authors and Affiliations

  1. 1.Occupational Hygiene Department, School of Public HealthTehran University of Medical SciencesTehranIran
  2. 2.Department of Occupational Hygiene EngineeringEsfarayen Faculty of Medical SciencesEsfarayenIran
  3. 3.Epidemiology and Biostatistics DepartmentTehran University of Medical SciencesTehranIran
  4. 4.Department of EpidemiologyEsfarayen Faculty of Medical SciencesEsfarayenIran
  5. 5.Department of Environmental Health Engineering, School of Public HealthArdabil University of Medical SciencesArdabilIran

Personalised recommendations