Effect of recreational exercise on midtrimester placental growth

Clapp, James F.; Rizk, K.

doi:10.1016/0002-9378(92)91730-x

Cited by 68 publications

(20 citation statements)

References 9 publications

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“…It is well known that maternal insulin resistance and the needs for an enhanced pancreatic ß-cell function normally present during late pregnancy [3,6,16] predispose the mother toward developing diabetes; thus strategies that decreased this risk without affecting fetal growth or metabolism, as is the case with moderate exercise protocols, would be highly desirable. This strategy is already being successfully applied in diabetic pregnant women [14], although it is still a controversial matter [4,5,12,19], since the possible effects on the fetus depend on the type and intensity of the exercise protocol followed. Studies in the rat have shown that maternal exercise may affect fetal metabolism, growth and even viability, depending on the type of exercise protocol followed.…”

Section: Discussionmentioning

confidence: 99%

Treadmill Training EnhancesGlucose Tole rance More in Pregnant than in Virgin Rats

Muñoz

López-Luna²,

Herrera³

1999

Neonatology

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To determine whether aerobic training throughout gestation modifies glucose tolerance, female Wistar rats were mated or kept nonpregnant and run or not on a 10° slope treadmill for 5 days/week at 20 m/min, starting with a 20-min run, and with a progressive daily increase of 5 min, reaching a 75-min run on the 20th day of protocol or gestation. The exercise protocol did not modify food intake, maternal and fetal weights, litter size or blood lactic acid levels. The rise in blood glucose after an oral glucose load (2 g/kg body weight) did not differ between trained and untrained nonpregnant rats but was lower in trained than in untrained pregnant rats. In the untrained rats the rise in plasma insulin levels after the glucose load was much greater in pregnant than in nonpregnant rats; in trained rats this difference between groups was attenuated by the greater effect of exercise decreasing the plasma insulin response to the glucose load in pregnant than in nonpregnant rats. Thus, an aerobic exercise protocol that does not modify the outcome of pregnancy does significantly reduce the altered oral glucose tolerance in pregnant rats and only has a minor effect in nonpregnant rats.

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Section: Discussionmentioning

confidence: 99%

Treadmill Training EnhancesGlucose Tole rance More in Pregnant than in Virgin Rats

Muñoz

López-Luna²,

Herrera³

1999

Neonatology

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“…]) e o tronco viloso (95% IC, 6,00 cm 3 [4,75] [12,68] [7,07]) y el tronco velloso (IC 95%, 6,00 cm 3 [4,75] …”

Section: O Exercício Físico Tem Demonstrado Efeito Positivo Nos Muitomentioning

confidence: 99%

“…Jackson and colleagues 3 showed villi, steam villi and total peripheral villi increase among women who continued moderate exercise training through pregnancy. Others also showed interesting placental morphology adjustments both trained and sedentary pregnant women [4][5][6] . However, many methodological issues such as few patients' number, gestational age at beginning and others might influence outcomes.…”

Section: Introductionmentioning

confidence: 99%

“…(95% IC, 39,73g [4,(66)(67)(68)(69)(70)(71)(72)(73)(74)80]), o volume placentário (IC 95%, 47,11 cm 3 [37,23]), o espaço interviloso (IC 95%, 16,76 cm 3 [12,68] [7,07]) e o tronco viloso (95% IC, 6,00 cm 3 [4,75] (IC del 95%, 39,73g [4,(66)(67)(68)(69)(70)(71)(72)(73)(74)80]), el volumen de la placenta (IC del 95%, 47,11 cm 3 [37,23]), el espacio intervelloso (IC del 95%, 16,76 cm 3 [12,68]), el volumen velloso (IC del 95%, 46,01 cm 3 [40,81]), el volumen vascular velloso (95 IC%,15,95 cm 3 [7,07]) y el tronco velloso (IC 95%,6,00 cm 3 [4,75] …”

Section: Introductionmentioning

confidence: 99%

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Exercise Effect on Placental Components: Systematic Review and Meta-Analysis

Neto

Gama

2015

Rev Bras Med Esporte

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Physical exercise has been demonstrated a positive effect on many pregnancy outcomes. Placental components are important for exchanging oxygen and nutrients between mother and fetus. This study aimed to systematic review and meta-analysis whether physical exercise could induce a morphological adjustment on placenta components. We systematically searched PubMed database until October 30 th , 2014. We included randomized and non-randomized studies with control group, which aimed to investigate the effect of the physical exercise (water, aerobic and resistance) on placental components (placental weight and volume, villous volume and vascular volume, intervillous space and stem villi). Initially, we identified 222 articles, of which 9 articles were used for full text analysis. Finally, four articles were included in the systematic review and meta-analysis. Meta-analysis demonstrated that exercise appeared to affect placental weight (95% CI, [4.25-7.75]). Apparently, physical exercise has a positive effect on placental components. However, this conclusion is based on a limited number of studies. Clearly, it stands the necessity of larger samples and better methodology quality.Keywords: placenta, chorionic villi, physical exertion, pregnancy. (95% IC, 39,73g [4,(66)(67)(68)(69)(70)(71)(72)(73)(74)80]), o volume placentário (IC 95%, 47,11 cm 3 [37,23]), o espaço interviloso (IC 95%, 16,76 cm 3 [12,68] [7,07]) e o tronco viloso (95% IC, 6,00 cm 3 [4,75] (IC del 95%, 39,73g [4,(66)(67)(68)(69)(70)(71)(72)(73)(74)80]), el volumen de la placenta (IC del 95%, 47,11 cm 3 [37,23]), el espacio intervelloso (IC del 95%, 16,76 cm 3 [12,68]), el volumen velloso (IC del 95%, 46,01 cm 3 [40,81]), el volumen vascular velloso (95 IC%,15,95 cm 3 [7,07]) y el tronco velloso (IC 95%,6,00 cm 3 [4,75] RESUMO O exercício físico tem demonstrado efeito positivo nos muitos desfechos da gravidez. Componentes da placenta são importantes para a troca de oxigênio e nutrientes entre mãe e feto. O objetivo deste estudo foi revisar de forma sistemática e realizar uma meta-análise para verificar se o exercício físico pode induzir um ajuste morfológico nos componentes da placenta. A pesquisa foi feita sistematicamente no banco de dados PubMed até 30 de outubro de 2014. Foram incluídos estudos randomizados e não-randomizados com grupo controle, que tiveram como objetivo investigar o efeito do exercício físico

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“…They are the offspring of mothers who were either anaemic in pregnancy, or who exercised dur ing pregnancy or who live at high altitude [40][41][42]. The fetus it seems attempts to overcome the deficiency in sup ply of nutrients to it by increasing the area of its attach ment to the mother [43], This, as with so much of the story of programming, is already known in animals.…”

mentioning

confidence: 99%

Outcome of Low Birthweight

Barker

1994

Horm Res

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Babies who are small at birth and during infancy are now known to be at an increased risk of developing coronary heart disease, hypertension and diabetes during adult life. This has led to the suggestion that these diseases are ‘programmed’ by an inadequate supply of nutrients or oxygen in utero or immediately after birth. The phenomenon of ‘programming’, whereby undernutrition in early life permanently changes body structure and function, is well documented in animals. As yet we know little about cellular and molecular changes which underlie it, but persisting changes in the secretion of hormones or in the sensitivity of tissues to them may be important in determining adult disease.

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Effect of recreational exercise on midtrimester placental growth

Cited by 68 publications

References 9 publications

Treadmill Training EnhancesGlucose Tole rance More in Pregnant than in Virgin Rats

Treadmill Training EnhancesGlucose Tole rance More in Pregnant than in Virgin Rats

Exercise Effect on Placental Components: Systematic Review and Meta-Analysis

Outcome of Low Birthweight

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