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Analysis of Human Body Suitability for Mattresses by Using the Level of PsychoPhysiological Relaxation and Development of Regression Model
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 Title & Authors
Analysis of Human Body Suitability for Mattresses by Using the Level of PsychoPhysiological Relaxation and Development of Regression Model
Min, Seung Nam; Kim, Jung Yong; Kim, Dong Joon; Park, Yong Duck; Kim, Seoung Eun; Lee, Ho Sang;
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Objective: The purpose of this study is to find the level of physical relaxation of individual subject by monitoring psychophysiological biofeedback to different types of mattresses. And, the study also aims to find a protocol to make a selection of the best mattress based on the measured information. Background: In Korea, there are an increasing number of people using western style bed. However, they are often fastidious in choosing the right mattress for them. In fact, people use their past experience with their old mattress as well as the spontaneous experience they encounter in a show room to finally decide to buy a bed. Method: Total five mattresses were tested in this study. After measuring the elasticity of the mattresses, they were sorted into five different classes. Physiological and psychological variables including Electromyography (EMG), heart rates (HR), oxygen saturations (SaO2) were used. In addition, the peak body pressure concentration rate was used to find uncomfortably pressured body part. Finally, the personal factors and subjective satisfaction were also examined. A protocol was made to select the best mattress for individual subject. The selection rule for the protocol considered all the variables tested in this study. Results: The result revealing psychological comfort range of 0.68 to 0.95, dermal comfort range of 3.15 to 6.07, back muscle relaxation range of 0.25 to 1.64 and personal habit range of 2.0 to 3.4 was drawn in this study. Also a regression model was developed to predict biofeedback with the minimal use of biofeedback devices. Moreover results from the proposed protocol with the regression equation and subjective satisfaction were compared with each other for validation. Ten out of twenty subjects recorded the same level of relaxation, and eight subjects showed one-level difference while two subjects showed two-levels difference. Conclusion: The psychophysiological variables and suitability selection process used in this study seem to be used for selecting and assessing ergonomic products mechanically or emotionally. Application: This regression model can be applied to the mattress industry to estimate back muscle relaxation using dermal, psychophysiology and personal habit values.
Mattress selection;Physical relaxation;Psychophysiological variables;Peak body pressure;
 Cited by
Addison, R.G. and Thorpy, M.J.T., A survey of the United States public concerning the quality of sleep, Sleep Research. 16, 244, 1986.

Bader, G.G. and Engdal, S., The influence of bed firmness on sleep quality, Applied Ergonomics, 31(5), 487-497, 2000. crossref(new window)

Cooper, R., Osselton, J.W. and Shaw, J.C., EEG Technology. butterworths 1, 1980.

Defloor, T., The effect of position and mattress on interface pressure, Applied Nursing Research, 13(1), 2-11, 2000. crossref(new window)

Donaldson, E. and Kennaway, D.J., Effects of temazepam on sleep, performance, and rhythmic 6-sulphatoxymelatonin and cortisol excretion after transmeridian travel, Aviation, Space, and Environmental Medicine, 62(7), 654-660, 1991.

Eden, M. and Carrington, R., The Philosophy of the bed, New York: Putnam's, 1961.

Higashi, Y., Yuji, T., Oikawa, D., Akihiro, M., Koudabashi, A., Fujimoto, T. and Tamura, T., Evaluation for mattress comfort by using MEG.In Neural Engineering, 2003. Conference Proceedings, First International IEEE EMBS Conference on, 63-66, 2003.

Kanz, E. and Gertis, W., Schlagtiefemessungenanverschiedenenpolsterwaren, Bekleidungsmedizin Vol.4, 6-14, 1964.

Kawabata, A. and Tokura, H., Effects of two different kinds of bed on thermophysiologicalreponses and heart rate during night sleep. J. Home Econ, JPN, 46(3), 235-240, 1995.

Kim, J.Y., Park, J.S., Yu, S.W., Lee, S.J. and Ko, T.S., Ergonomic Evaluation of "Air-Ball" Mattress by using Skin Pressure and Temperature Changes, Paper presented at the Fall Conference of the Ergonomics Society of Korea, 2007.

Kim, J.Y., Min, S.N., Lee, M.H., Jeong, J.H., An, J.H. and Shin, Y.S., Measurement of User Experience to Select a Comfortable Mattress.In Design, User Experience, and Usability, Theory, Methods, Tools and Practice, Springer Berlin Heidelberg, 449-458, 2011.

Kim, M.J. and Choi, J.H., A Study on the Bed Climate and the Physiological Responses in Sleep, Journal of the Korean Society of Clothing and Textiles, 15(2) 77-87, 1991.

Kim, W.S., Park, S.J. and Kim, K.H., Analysis of Sleep physiological signal for the Comfortable bed the development, Conference of the Ergonomics Society of Korea, 190-195, 1997.

Kim, W.S., Park, S.J., Kim, J,S., Hwang, J.H. and Kim, K.H., Study of Sleep stage classification using heart rate variation, Conference of the Ergonomics Society of Korea, 321-324, 1999.

Kovacs, F.M., Abraira, V., Pena, A., Martin-Rodriguez, J.G., Sanchez-Vera, M., Ferrer, E., et al. Effect of firmness of mattress on chronic non-specific low-back pain: randomised, double-blind, controlled, multicentre trial, The Lancet, 362(9396), 1599-1604, 2003. crossref(new window)

Lahm, R. and Iaizzo, P.A., Physiologic responses during rest on a sleep system at varied degrees of firmness in a normal population, Ergonomics, 45(11), 798-815, 2002. crossref(new window)

Lee, H.J. and Hong, K.H., Survey on the Use of Bed for Comfortable Sleeping, Korean Journal of Human Ecology, 10(4), 349-355, 2001.

Lee, H. and Park, S., Quantitative effects of mattress types (comfortable vs. uncomfortable) on sleep quality through polysomnography and skin temperature, International journal of industrial ergonomics, 36(11), 943-949, 2006. crossref(new window)

Lee, N.B., Lim, J.J., Geum, J.S., Lee, G.H. and Choi, H.S., Evaluation of Sleep Comfort for Indoor Thermal Environment based on the Physiological Signal Analysis, Korean Journal of the Science of Emotion & Sensibility, 3(2), 75-84, 2000.

Michael, B., Good Night: the sleep doctor's 4-week program to better sleep and better health, Penguin USA, 2007.

Na, Y.J., Analysis of the Sleep Environment, Seoul National University, Master's Thesis, 1989.

Nicol, K. and Rusteberg, D., Pressure distribution on mattress, Biomechanics, 26, 1479-1486, 1985.

Park, S.J., Lee, H.J. and Hong, K.H., Selection of Bed Mattress for Good Sleeping, KSCT/ITAA Joint World Conference, Seoul, 2001.

Park, S.J., Whang, M.C. and Kim, C.B., Measure and analysis of pressure distribution on a bed, Proceeding of the 39th Human Factors and Ergonomics Society Annual Meeting, SanDiego, 297-300, 1995.

Parsons, H.M., The bedroom, Human Factors, The Journal of the Human Factors and Ergonomics Society, 14(5), 421-450, 1972.

Peter, B. and Avaliono, F., Mattress evaluation-assessment of contact pressure, comfort and discomfort, Applied Ergonomics, 29(1), 35-39, 1998. crossref(new window)

Shin, S.M., A Study on the Use of Bedclothes, Journal of the Korean Home Economics Association, 39(10), 29-37, 1983.

Suckling, E., Koenig, E., Hoffman, B. and Brooks, C., The physiological effects of sleeping on hard or soft beds, Human Biology, 29(3), 274, 1957.

Tsai, L.L. and Liu, H.M., Effects of bedding systems selected by manual muscle testing on sleep and sleep-related respiratory disturbances, Applied ergonomics, 39(2), 261-270, 2008. crossref(new window)

Vanderwee, K., Grypdonck, M.H. and Defloor, T., Effectiveness of an alternating pressure air mattress for the prevention of pressure ulcers, Age and Ageing, 34(3), 261-267, 2005. crossref(new window)

Yang, C.K., Normal sleep physiology, Society of Otorhinolaryngology, 12(1), 3-14, 2001.

Yu, S.W., Kim, J.Y., Min, S.N. and Sung, S.H., Analysis of Suitability for Mattresses by Using Psycho-Physiological Measures, Spring Conference of Korean Journal of the Science of Emotion & Sensibility, 2009(5), 63-66, 2009.