Effect of physical fitness on the adrenocortical response to exercise stress

Ja, White; Ah, Ismail; Gd, Bottoms

doi:10.1249/00005768-197600820-00019

Cited by 23 publications

(14 citation statements)

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“…aptation to exercise stress is normally observed with endurance training and glucocorticoid concentrations are reduced at absolute and relative power outputs compared with pretraining levels (32,34,35). Mice in this study did not exhibit adaptation of the glucocorticoid response to physical exercise.…”

Section: Discussionmentioning

confidence: 45%

Plasma Corticosterone Response to Chronic Ethanol Consumption and Exercise Stress

Sipp

Blank

Lee

et al. 1993

Experimental Biology and Medicine

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Acute exposure to ethanol induces a stress response in mice that is manifested by increased plasma corticosterone (PC) concentration. However, during chronic intake of 7.5% w/v ethanol, diurnal fluctuation of PC is dampened. Whether chronic consumption of 20% w/v ethanol alters normal diurnal fluctuation of plasma glucocorticoids is not known. Investigating the PC response in 20% w/v ethanol-consuming mice is of interest because glucocorticoids are known suppressants of natural killer (NK) cell activity and increased concentration or altered diurnal fluctuation of PC may have a modulatory role on NK cells in these mice. Mice given 20% w/v ethanol for at least 7 days and for as long as 10 weeks have suppressed splenic NK cell cytolytic activity. Thus, the purpose of this study was to examine whether mice given 20% w/v ethanol exhibited normal concentrations and diurnal variation of PC. To further define the glucocorticoid response in chronic ethanol-consuming mice, PC concentration was evaluated in response to a secondary stress of physical exercise. After 1 week, ethanol-consuming mice exhibited abnormal diurnal PC periodicity that was progressively dampened during the remaining 9 weeks. Acute physical exercise during Week 1 induced a 2-fold increase in PC concentration compared with pre-exercise values, a response that was independent of ethanol intake. After 6 and 10 weeks, the postexercise PC concentration was attenuated in ethanol-consuming compared with water-drinking mice. It was concluded that suppressed NK cell activity typically observed with this model of chronic ethanol intake is not directly associated with dampened diurnal fluctuation in PC.

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Section: Discussionmentioning

confidence: 45%

Plasma Corticosterone Response to Chronic Ethanol Consumption and Exercise Stress

Sipp

Blank

Lee

et al. 1993

Experimental Biology and Medicine

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“…There is evidence that physical exercise alleviates symptoms of depression among older people (Martinsen et al, 1989;Emery and Gatz, 1990;McNeil et al, 1991;Singh et al, 1997;Blumenthal et al, 1999;Babyak et al, 2000). Exercise is suggested to improve mood by multiple physiological and biological mechanisms, such as alterations in central monoamine activity (Ransford, 1982), reduced activity of hypothalamo-pituitary-adrenocortical axis (White et al, 1976) and increased secretion of beta endorphins (Thoren et al, 1990) as well as improved physical fitness (Blumenthal et al, 1999;McAuley et al, 2000a). Psychological mechanisms like enhanced self-esteem (Sonstroem and Morgan, 1989;McAuley et al, 1997), distraction from negative thoughts (Fennell and Teasdale, 1984;Morgan, 1985), improved sleep and adaptation to stress (Fox, 1999) are also suggested.…”

Section: Introductionmentioning

confidence: 99%

Effects of a group‐based exercise program on the mood state of frail older women after discharge from hospital

Timonen

Rantanen

Timonen

et al. 2002

Int J Geriat Psychiatry

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“…Trained individuals also have higher maximal oxygen uptake values when worked to exhaustion (8). In response to a standard work load, the trained, relative to the untrained, show the following: (a) less heart rate increase coupled with more rapid return to baseline following work termination (9), (b) less increase of norepinephrine (10) and cortisol (11), (c) less accumulation and faster elimination of lactic acid from the bloodstream (12). These physiological adaptations are thought to promote the efficiency of the body's response to physical stress (9).…”

Section: Introductionmentioning

confidence: 99%

Aerobic Fitness Level and Reactivity to Psychosocial Stress: Physiological, Biochemical, and Subjective Measures

Sinyor

Schwartz²,

Péronnet³

et al. 1983

Psychosomatic Medicine

167

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Aerobic fitness is associated with numerous physiological adaptations which permit physical stress to be coped with more efficiently. The present experiment examined whether aerobic fitness influences emotional response. Heart rate, biochemical measures (catecholamines, cortisol, prolactin, lactic acid), and self-reported arousal and anxiety were monitored in 15 highly trained and 15 untrained subjects at various points before, during and following exposure to a series of psychosocial stressors. Heart rate and subjective arousal level increased markedly during the stressors in both groups. Trained subjects showed higher levels of norepinephrine and prolactin early in the stress period, more rapid heart rate recovery following the stressors, and lower levels of anxiety at the conclusion of the session. This more rapid heart rate and subjective recovery from psychosocial stress, suggests that aerobically trained individuals may be capable of faster recovery in both physiological and subjective dimensions of emotionality. The differences in reactivity profiles between the aerobically trained and untrained were discussed in light of models that have dealt with the adaptiveness of emotional response.

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Effect of physical fitness on the adrenocortical response to exercise stress

Cited by 23 publications

References 0 publications

Plasma Corticosterone Response to Chronic Ethanol Consumption and Exercise Stress

Plasma Corticosterone Response to Chronic Ethanol Consumption and Exercise Stress

Effects of a group‐based exercise program on the mood state of frail older women after discharge from hospital

Aerobic Fitness Level and Reactivity to Psychosocial Stress: Physiological, Biochemical, and Subjective Measures

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