Exercise stress response

Bloomer RJ, Goldfarb AH and McKenzie MJ. 2006. Oxidative stress response to aerobic exercise comparison of antioxidant supplements. Med Sci Sports Exercise 38(6) 1098-1105. 

Laboratory tests are affected by many factors, such as recent intake of food, alcohol, or drugs, and by smoking, exercise, stress, sleep, posture during specimen collection, and other variables (see Chapter 17). Proper patient preparation is essential for the test results to be meaningful. Although responsibility for this usually resides with personnel outside the laboratory, the laboratory must define the instructions and procedures for patient preparation and specimen acquisition. These procedures should be included in hospital procedure manuals and should be transmitted to patients in both oral and written instructions. Compliance with these instructions is monitored directly when the laboratory employs its own phlebotomists. Specific inquiry should be made regarding patient preparation before specimens are collected, and efforts should be made to correct noncompli-ance. For tests in which standardization of the collection is very important (such as for plasma catecholamines), specimens should be collected in a controlled environment, such as a clinical testing unit. 

Lauer MS, Francis GS, Okin PM, et al. Impaired chronotropic response to exercise stress testing as a predictor of mortality. JAMA 1999 281(6) 524—9. 

The effect of stress on the serum cholesterol level and on the atherosclerotic process varies with the kind, intensity, and duration of the stress condition. Exercise stress (physical exertion) has been reported to have prophylactic, as well as therapeutic, implications in atherosclerosis, whereas, emotional stress produces a variety of responses. Physical exercise may retard development atherosclerosis by increasing the removal of cholesterol by oxidation. In man, immediately after running exercigg, serum cholesterol value may be increased but decreases by 12 hours. Cholesterol levels of men who became unemployed rose and then showed a drop later when they found work. Cholesterol in the blood apgjr-ently can vary with the duration and severity of the emotional stress. 

Gulati M, Shaw LJ, Thisted RA, Black HR, Bairey Merz CN, Arnsdorf MR Heart rate response to exercise stress testing in asymptomatic women The st. James women take heart project. CIRC 2010 122(2) 130-7. 

The evolution of T, is just an exercise in mesoscale thermodynamics [13]. These expressions, in combination with (7.54), incorporate concepts of heterogeneous deformation into a eonsistent mierostruetural model. Aspects of local material response under extremely rapid heating and cooling rates are still open to question. An important contribution to the micromechanical basis for heterogeneous deformation would certainly be to establish appropriate laws of flow-stress evolution due to rapid thermal cycling that would provide a physical basis for (7.54). 

It therefore seems likely that the anti-hypertensive action of the -blocking drugs is in some way associated with the decline in peripheral resistance which had initially been elevated as a response to a reduction in cardiac output. The precise mechanism responsible for the fall in total peripheral resistance is as yet unknown. We do know however that the majority of untreated hypertensives show an excessive sympathetic response to stimulae such as stress and exercise. It has been clearly shown that the substantial rise in blood pressure experienced by hypertensive patients following exercise is prevented by 8-blocking drugs (20). It could be therefore that it is simply the blockade of surges in cardiac output and blood pressure which leads to a relaxation of the vascular bed and the... 

Full-scale exercise The purpose of a full-scale exercise is to test the effectiveness of the emergency response plan. A full-scale exercise should incorporate a high degree of realism, extensive involvement of resources and personnel, and an increased level of stress. The exercise should involve mutual aid groups, agencies, and outside responders. 24-36 months... 

Adrenal medulla. On the one hand, release of epinephrine elicits cardiovascular effects, such as increases in heart rate und peripheral vascular resistance. On the other, it evokes metabolic responses, such as glycogenolysis and li-polysis, that generate energy-rich substrates. The sensation of hunger is suppressed. The metabolic state corresponds to that associated with physical exercise - silent stress . 

Compounds that stimu late insulin secretion One that decreases insulin secretion A rise in blood glucose is the most important signal for increased insulin secretion. Plasma amino acid levels and the intestinal peptide secretin also stimulate insulin secre tion. Its synthesis and release are decreased by epinephrine, which is secreted in response to stress, trauma, or extreme exercise. 

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