Humans and animals give several impressions to their recipients with their postures. In this study, the influence of postures on a body was examined through the perspective of the endocrine system and the autonomic nervous system. The subjects were 18 healthy adults (7 males and 11 females). A slouching posture like arching back was defined as a low power pose (LP), and a posture straightening back and throwing out chest is defined as a high power pose (HP). Starting at rest, the subjects took LP posture and changed to HP posture, and their autonomic nervous functions were measured and their saliva was collected before and after taking each posture. In taking LP posture, the decrease of the parasympathetic nervous activity, the increase of the pathetic nervous activity and the increase of chromogranin A in saliva were observed. The increase of the autonomic nervous activity, and the decrease of chromogranin A which had been increased by taking LP posture were observed by taking HP posture. There was no influence on cortisol by taking either of the postures. This study suggested that bad postures such as curving back affected stress reactions through the perspective of the endocrine system and the automatic nervous system.
References
[1]
Carney, D.R. (2010) Power Posing; Brief Nonverbal Displays Affect Neuroendocrine Levels and Risk Tolerance. Physiological Science, 21, 1363-1368.
https://doi.org/10.1177/0956797610383437
[2]
Carney, D.R., Judith, A.H. and Lavonia, S.L. (2005) Beliefs about the Nonverbal Expression of Social Power. Journal of Nonverbal Behavior, 29, 105-123.
https://doi.org/10.1007/s10919-005-2743-z
[3]
Otomi, K. (2015) Effects of Yogurt Containing Lactobacillus Gasseri OLL2716 on Autonomic Nerve Activities and Physiological Functions. Health, 7, 397-405.
https://doi.org/10.4236/health.2015.73045
[4]
Malik, M., Bigger, J.T., Camm, A.J., Kleiger, R.E., Moss, A.J., and Schwartz, P.J. (1996) Task Force of the European Society of Cardiology the North American Society of Pacing Electrophysiology Heart Rate Variability: Standards of Measurements, Physiological Interpretation and Clinical Use. Circulation, 93, 1043-1065.
https://doi.org/10.1161/01.CIR.93.5.1043
[5]
Carney, D.R., Hall, J.A. and Lavonia, S.L. (2005) Beliefs about the Nonverbal Expression of Social Power. Journal of Nonverbal Behavior, 29, 105-123.
https://doi.org/10.1007/s10919-005-2743-z
[6]
Sapolsky, R.M., Alberts, S.C. and Altman, J. (1997) Hypercortisolism Associated with Social Subordinance or Social Isolation among Wild Baboons. Archives of General Psychiatry, 54, 1137-1143.
https://doi.org/10.1001/archpsyc.1997.01830240097014
[7]
Helle, K.B. (1966) Some Chemical and Physical Properties of the Soluble Protein Fraction of Bovine Adrenal Chromaffin Granules. Molecular Pharmacology, 2, 298-310.
[8]
Winkler, H. and Fischer-Colbrie, R. (1992) The Chromogranins A and B: The First 25 Years and Future Perspectives. Neuroscience, 49, 497-528.
https://doi.org/10.1016/0306-4522(92)90222-N
[9]
Nishikawa, Y., Li, J., Futai, Y., Yanaihara, N., Iguch, K., Mochizuki, T., Hoshino, M. and Yanaihara, C. (1998) Region-Specific Radioimmunoassay for Human Chromogranin A. Biomedical Research, 19, 245-251.
https://doi.org/10.2220/biomedres.19.245
[10]
Chrousos, G.P. and Gold, P.W. (1992) The Concepts of Stress and Stress System Disorders: Overview of Physical and Behavioral Homeostasis. JAMA, 267, 1244-1252. https://doi.org/10.1001/jama.1992.03480090092034
[11]
Tornhage, C.J. (2009) Salivary Cortisol for Assessment of Hypothalamic-Pituitary-Adrenal Axis Function. Neuroimmunomodulation, 16, 284-289.
https://doi.org/10.1159/000216186
[12]
Nakane, H., Asami, O., Yamada, Y., Harada, T., Marsui, N., Kanno, T. and Yanaihara, N. (1998) Salivary Chromogranin A as an Index of Psychosomatic Stress Response. Biomedical Research, 19, 401-406. https://doi.org/10.2220/biomedres.19.401
