Additional Heart Rate

Strømme, S. B.; Wikeby, Per; Blix, Arnoldus Schytte; Ursin, Holger

doi:10.1016/b978-0-12-709250-8.50014-1

Cited by 17 publications

(10 citation statements)

References 4 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Moreover, the increase in f H during stress is generally beyond levels that can be predicted from measured oxygen uptake (Blix et al, 1974;Steptoe, 2000;McPhee et al, 2003). This 'additional f H ' is used as an indicator of emotional activation or arousal in humans (Stromme et al, 1978;Wilhelm and Roth, 1998). We suggest that this type of disproportionate stress effect on f H vs EE may explain why the f H corresponding to a given EE was higher in previous studies than in the present study.…”

Section: Does Stress Affect the Ee/f H Relationship?contrasting

confidence: 55%

Heart rate as a predictor of energy expenditure in undisturbed fasting and incubating penguins

Groscolas

Viera

Guérin

et al. 2010

Journal of Experimental Biology

View full text Add to dashboard Cite

SUMMARYHeart rate (f H ) measurement offers the possibility to monitor energy expenditure (EE) in wild animals if the EE/f H relationship for the species, physiological stages and activities of interest is known. This relationship has been extensively studied using oxygen consumption rate (V O2) measurement in captive, repeatedly handled king penguins (Aptenodytes patagonicus). Unfortunately, the potential effects of stress on the observed relationships resulting from handling and confinement were not considered. This study is the first involving undisturbed animals, and determines the EE/f H relationship in naturally fasting and freely incubating or captivity-acclimatized male and female king penguins. EE determination was based on (1) the measurement of body mass loss during periods of phase II fasting, and (2) the calculation of its energy equivalent from changes in body composition, i.e. 23.9kJg. f H levels in freely incubating and captivity-acclimatized birds were found to be 50-70% lower than those previously reported for resting king penguins during V O2 measurements. Significant EE/f H relationships were found in freely incubating and captive males and females (R

show abstract

Section: Does Stress Affect the Ee/f H Relationship?contrasting

confidence: 55%

Heart rate as a predictor of energy expenditure in undisturbed fasting and incubating penguins

Groscolas

Viera

Guérin

et al. 2010

Journal of Experimental Biology

View full text Add to dashboard Cite

show abstract

“…The earliest evidence emerged from two field studies, which set the methodological tone for future laboratory studies. Heart rate and oxygen consumption were recorded simultaneously in helicopter and transport aircraft pilots during difficult flight maneuvers (Blix, Stromme, & Ursin, 1974) and in novice parachutists just prior to jumping (Stromme, Wikeby, Blix, & Ursin, 1978). In both studies, cardiac and metabolic activity were also monitored during dynamic exercise.…”

mentioning

confidence: 99%

Metabolically exaggerated cardiac reactions to acute psychological stress revisited

2009

View full text Add to dashboard Cite

The reactivity hypothesis postulates that large magnitude cardiovascular reactions to psychological stress contribute to the development of pathology. A key but little tested assumption is that such reactions are metabolically exaggerated. Cardiac activity, using Doppler echocardiography, and oxygen consumption, using mass spectrometry, were measured at rest and during and after a mental stress task and during graded sub maximal cycling exercise. Cardiac activity and oxygen consumption showed the expected orderly association during exercise. However, during stress, large increases in cardiac activity were observed in the context of modest rises in energy expenditure; observed cardiac activity during stress substantially exceeded that predicted on the basis of contemporary levels of oxygen consumption. Thus, psychological stress can provoke increases in cardiac activity difficult to account for in terms of the metabolic demands of the stress task.

show abstract

“…There is now substantial evidence that acute psychological stress perturbs the cardiovascular system~Obrist, 1981;Turner, 1994;Turner, Sherwood, & Light, 1992!. Increases in cardiovascular activity that are excessive, relative to concurrent levels of energy expenditure, have been observed in response to both naturalistic~Blix, Stromme, & Ursin, 1974;Stromme, Wikeby, Blix, &Ursin, 1978! andlaboratory~Carroll, Harris, &Cross, 1991;Sherwood, Allen, Obrist, & Langar, 1986;Turner & Carroll, 1985;Turner, Carroll, & Courtney, 1983!…”

mentioning

confidence: 99%

The effects of competition and competitiveness on cardiovascular activity

et al. 2001

View full text Add to dashboard Cite

Cardiovascular activity was measured at resting baseline and in response to a car racing game, undertaken in competition or in cooperation with an experimenter, or individually. Competitiveness and win and goal orientations were assessed by questionnaire. Competition provoked increases in blood pressure and heart rate, and a significant shortening of the preejection period, an index of enhanced beta-adrenergic influences on the heart. The cooperation task was largely without effect, and although the solo task affected cardiovascular activity, it did so to a lesser extent and much less consistently than did the competition task. The three task conditions, then, were largely distinguishable by their capacity to activate beta-adrenergic processes. Participants high in competitiveness and desire to win showed higher blood pressure reactions and greater shortening of the preejection period to competition than those low in these characteristics.

show abstract

Additional Heart Rate

Cited by 17 publications

References 4 publications

Heart rate as a predictor of energy expenditure in undisturbed fasting and incubating penguins

Heart rate as a predictor of energy expenditure in undisturbed fasting and incubating penguins

Metabolically exaggerated cardiac reactions to acute psychological stress revisited

The effects of competition and competitiveness on cardiovascular activity

Contact Info

Product

Resources

About