There is a very complex relationship between stressful situations, our mind and body’s reaction to stress and the onset of depression. Some people develop depression after going through stressful events in their lives, such as the death of someone close, loss of job and other negative and traumatic problems that can cause large amount of stress (Prentiss, 2009). These problems make us experience a mixture of physical and emotional effects that can create stress as a positive or negative feeling. The human body is designed to experience and react to stress; it can be both a positive and negative influence. Positive stress can give a person the drive and motivation needed to stay focused and alert. Whereas negative stress is more common and can become a threat to a person’s physical and mental well-being. It can cause a number of feelings such as rejection, anger and depression, which can lead to health problems such as high blood pressure, insomnia, ulcers, heart disease and stroke (Stress management, 2009). This report will be looking at results from an experiment of six sessions of aerobic exercise, to see if there is a reduction in stress levels and will look at previous studies to find out if there is a relationship between exercise and reduced stress levels.
Stress is ‘the body's reaction to change that requires a physical, mental or emotional response’ (Morrow, 2009). Stress can come from an existing stressor, for example any situation that makes a person feel frustrated, angry, nervous or anxious. Stress consists of four interconnected stages:
Environmental demand, where a physical or psychological demand is placed on an individual.
Perception of demand, where high levels of anxiety influence an individual’s perception of the demand.
Stress response, where physiological and psychological response takes place from the perception of the situation.
Behavioural
References: Dimeo, F., Bauer, M., Varahram, I., Proest, G., and Halter, U. (2001) Benefits from aerobic exercise in patients with major depression: a pilot study. British Journal of Sports Medicine 35(2), 114-117. Dunn, A.L., Trivedi, M., and O’Neal, H.A. (2001) Physical activity dose-response effects on outcomes of depression and anxiety. Journal of the American College of Sports Medicine 33(6), 587-597. Harris, A., Cronkite,R., and Moos, R Lavalee, D., Williams, J.M., and Jones, M.V. (2008) Key studies in sport and exercise psychology: Exercise and psychological well-being. Maidenhead: Open University Press. Lawler, D.A., and Hopker, S.W. (2001) The effectiveness of exercise as an intervention in the management of depression: systematic review and meta-regression analysis of randomised controlled trials. British Medical Journal 322(763), 2-25. Morrow, A. (2009) Definition of Stress. Retrieved on 1st December 2009 from http://dying.about.com/od/glossary/g/stress.htm North, T.C., McCullagh, P., and Tran, Z Prentiss, P. (2009) Stress and Depression. Retrieved on 13th December 2009 from http://www.allaboutdepression.com/gen_05.html Salmon, P Sandlund, E.S., and Norlander, T. (2004) The Effects of Tai Chi Chuan Relaxation and Exercise on Stress Responses and Well-Being: An Overview of Research. International Journal of Stress Management 7(2), 139-149. Scott, S. (2005) Medical Report: Combating Depression with Exercise. American College of Sports Medicine 9(4), 31-33. Stress Management (2009) Dealing with stress. Retrieved on 13th December 2009 from http://www.stressmanagement.co.uk/details_about_stress/details_about_stress.html Weinberg, R.S., and Gould, D World Health Organization (2009) Depression: What is it? Retrieved on 4th December 2009 from http://www.who.int/mental_health/management/depression/definition/en/ Appendix 1