Stress hormones and placental steroids in physical exercise during pregnancy

Rauramo, Ilkka; Andersson, Björn; Laatikainen, Timo; Pettersson, J

doi:10.1111/j.1471-0528.1982.tb05058.x

Cited by 39 publications

(18 citation statements)

References 17 publications

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“…there is a greater activation of sympathetic nerves than the adrenal medulla (8). In this study, a similar response has been found in pregnant women consistent with the results of other workers (6,9). The detected decrease in noradrenaline with increasing gestation may be due to a dilutional effect from the continued expansion by approximately 15% of plasma volume from midpregnancy until the 32nd week of gestation.…”

Section: Discussionsupporting

confidence: 92%

Fetal Heart Race and Maternal Cardiovascular and Catecholamine Responses to Dynamic Exercise

Cooper¹,

Hunyor²,

Boyce

et al. 1987

Aust NZ J Obst Gynaeco

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Fourteen women performed treadmill exercise for continuous 10-minute periods at levels of 2, 3 and 4 mets in the second and third trimester of pregnancy and again postpartum. The percentage increase in heart rate in response to exercise was similar during pregnancy and postpartum while systolic blood pressure was increased only during pregnancy. Maternal plasma noradrenaline levels at peak exercise increased 64% (p less than 0.005), 42% (p less than 0.005) and 29% (NS) in the 3 studies respectively compared to resting levels at these times. Ten women experienced increased uterine activity during the exercise or recovery periods. Fetal heart rate was increased (p less than 0.05) by exercise but this was independent of uterine contractions and plasma noradrenaline levels.

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Section: Discussionsupporting

confidence: 92%

Fetal Heart Race and Maternal Cardiovascular and Catecholamine Responses to Dynamic Exercise

Cooper¹,

Hunyor²,

Boyce

et al. 1987

Aust NZ J Obst Gynaeco

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“…The role of catecholamines has been debated (7,8). Physical exercise during pregnancy has been shown to release both adrenaline and noradrenaline (8,9), but little is known about the correlation between catecholamines and uterine or placental blood flow.…”

Section: Introductionmentioning

confidence: 99%

Effect of exercise on Maternal Hemodynamics and Placental Blood Flow in Healthy Women

Rauramo

Forss

1988

Acta Obstet Gynecol Scand

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Intervillous placental blood flow responses to standardized exercise during late pregnancy were studied using a Xenon technique in 25 healthy women. Thirteen of them were studied twice between the 32nd and 38th weeks of pregnancy, with mean 32 (range 22 to 40) days between the studies. At the end of a 6-min exercise, mean maternal heart rate had risen from 77 +/- 10 (SD) to 154 +/- 11 beats/min, amounting to 63% of maximal oxygen uptake. Stroke volume rose by 9%, cardiac output by 65% and cardiac index by 71% as a consequence of exercise, but peripheral vascular resistance declined by 41%. The placental blood flow was at a similar level after the exercise as before the exercise, being 95 +/- 19 (mean +/- SD) ml/min/100 ml of intervillous space before, 98 +/- 24 one min after, and 93 +/- 16 30 min after the cessation of exercise. No change was found in the level of placental blood flow between the 32-34th and 37-38th weeks of pregnancy. The placental blood flow had a positive correlation with maternal weight, mean arterial blood pressure and with diastolic blood pressure. Maternal heart rate, cardiac output, cardiac index, placental weight and the birth weight of the infant was not correlated with placental blood flow. It is concluded that in normal pregnancy a short submaximal exercise has little effect on placental blood flow measured after exercise.

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“…The effect of physical activity on E 3 level of pregnant women is controversial. Some reported that E 3 level after exercise was increased and other reported it was decreased after an increase 38,39) . In this study, urinary E 3 level of the pregnant subjects seems to be lower during physical activity or work rather than at rest.…”

Section: Ementioning

confidence: 99%

Effects of Night Work on Urinary Excretion Rates of 6-Sulfatoxymelatonin, Norepinephrine and Estriol in Pregnant Women.

Yamauchi

2004

INDUSTRIAL HEALTH

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It has been suggested that shift work, night work in particular, affects worker's psychophysical health. However, the effects of night work on the health of pregnant women are not physiologically well elucidated. The effects of night work on the biological function of pregnant women were studied in the present study. Three pregnant and six non-pregnant nurses that engaged in fastrotating shift system cooperated for the study. The 24-h urine samples were collected in two time frames, daytime (07:00 to 23:00) and nighttime (23:00 to 07:00) on the day shift, the night shift and the days off. Urinary concentrations of 6-sulfatoxymelatonin and norepinephrine were measured by enzyme-linked immunosorbent assay and estriol by radioimmunoassay. The excretion profiles of urinary 6-sulfatoxymelatonin in the pregnant and the non-pregnant women were altered on the night shift, which might relate the derangement of circadian rhythm of melatonin secretion. The urinary norepinephrine level during the night work was considerably higher in the pregnant women, which indicated the presence of higher physical burden in them due to the night work. The urinary estriol level was not significantly affected by shift, day/night and individual factors, and the effect of night work on urinary estriol level of the pregnant women remained uncertain. The results of the present study suggested that the night work of the pregnant shift workers should be much more relieved.

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Stress hormones and placental steroids in physical exercise during pregnancy

Cited by 39 publications

References 17 publications

Fetal Heart Race and Maternal Cardiovascular and Catecholamine Responses to Dynamic Exercise

Fetal Heart Race and Maternal Cardiovascular and Catecholamine Responses to Dynamic Exercise

Effect of exercise on Maternal Hemodynamics and Placental Blood Flow in Healthy Women

Effects of Night Work on Urinary Excretion Rates of 6-Sulfatoxymelatonin, Norepinephrine and Estriol in Pregnant Women.

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