Physiological, responses exercise

Tarnopolsky, M. A., Atkinson, S. A., Macdougall, J. D., Sale, D. G., and Sutton, J. R., Physiological responses to caffeine during endurance running in habitual caffeine users, Medicine and Science in Sports and Exercise, 21, 418, 1989. 

Bhambhani Y, Burnham R, Snydmiller G, et al. 1994. Comparative physiological responses of exercising men and women to 5 ppm hydrogen sulfide exposure. Am Ind Hyg Assoc J 55 1030-1035. 

Home JA, Pettitt AN. Sleep deprivation and the physiological response to exercise under steady state conditions in untrained subjects. Sleep 1984 7 168-179. 

These criteria are partially fulfilled in insulin-deficient diabetes. But the natural modulation of insulin secretion in response to need (food, exercise) does not operate with injected insulin and even sophisticated technology cannot yet exactly mimic the normal physiological responses. The criteria are still further from realisation in, for example, some cancers and schizophrenia. 

Deno NS, Kamon E and Kiser DM (1981). Physiological response to resistance breathing during short and prolonged exercise. Am Ind Hyg Assoc J, 42, 616-623. 

A double-blind study investigated the effects of multiple-dose oral PB on physiological responses to heat stress tests in a hot, dry environment (42°C and 20% relative humidity) in seven male soldiers. The authors found that a 7 day oral PB course caused very mild effects on physiological responses in men undergoing moderate treadmill exercise in a hot environment. 

Wenger, C.B. and Latzka, W.A., Effects of pyridostigmine bromide on physiological responses to heat, exercise and hypohydration, Aviat. Space Environ. Med., 63,37,1992. 

Carbon dioxide can contribute to fire-related deaths. At low concentrations, it is not harmful. It is a normal product of combustion in the cell metabolism of the body. An increased respiration rate is a physiological response to increasing carbon dioxide in the blood. When one exercises, the increase in carbon dioxide tells the body there is a need for more oxygen for the exercising muscles. Externally supplied carbon dioxide produces the same effect. However, in a fire, increased rates of breathing lead to inhalation of other combustion products that create danger for a person. 

Some differences are variable. Some differences take care of themselves. The heart and respiratory rates elevate when people exercise. After resting, their physiological responses remm to normal. 

Volek, J.S., S.A. Mazzetti, W.B. Farquhar, B.R. Barnes, A.L. Gomez, and W.J. Kraemer, Physiological responses to short-term exercise in the heat after creatine loading. Med Sci Sports Exerc, 33 1101-1108, 2001. 

The existence and the extent of glucose production from the small intestine, the muscle and the brain, therefore continues to be a matter of debate. Any advancement in this field, however, will have the potential to change the way we consider the concept of liver and kidney reciprocity, the physiological response to exercise and to feeding, and the pathogenesis of many conditions like diabetes, hypoglycecemia, liver and hepatic failure, ischemic and nerrrodegenerative diseases. 

Normal physiologic response to fever, exercise, anxiety, pain, dehydration may also accompany shock, left-sided heart failure, cardiac tamponade, hyperthyroidism, anemia, hypovolemia, pulmonary embolism, and anterior-wall myocardial infarction (Ml). 

Graham, T. E. and Spriet, L. L., Performance and metabolic responses to a high caffeine dose during prolonged exercise, Journal of Applied Physiology, 71, 2292, 1991. 

The study of physiology includes study not only of how each of these systems carries out its functions, but also of the mechanisms involved that regulate these activities in order to maintain homeostasis under a variety of conditions. For example, the body s needs are very different during a resting state compared to that of exercise. How do organ systems adjust their activities in response to varied levels of physical exertion or when confronted with altered internal and external environments In order to maintain homeostasis, the body must be able to monitor and sense changes in the internal environment. It must also be able to compensate, or make adjustments, for these changes. 

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