The hormonal response to exercise

Galbo, H.

doi:10.1002/dmr.5610010404

Cited by 74 publications

(49 citation statements)

References 90 publications

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“…1). The increase in plasma GH after exercise has been well documented (Galbo 1985;Flanagan et al 1997;Wallace et al 1999). Plasma GH levels of controls showed no changes during pregnancy compared to on the D0 while those of exercise group were significantly higher on D14 ( p < 0.05).…”

Section: Discussionmentioning

confidence: 85%

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Increased Plasma Levels of Growth Hormone, Insulin-Like Growth Factor (IGF)-I and IGF-Binding Protein 3 in Pregnant Rats with Exercise

Turgut

Kaptanoǧlu

Emmungil

et al. 2006

Tohoku J. Exp. Med.

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Growth hormone (GH) and insulin-like growth factor-I (IGF-I) are closely related molecules. Insulinlike growth factor-binding protein-3 (IGFBP-3) is a main molecule that binds IGF-I. GH, IGF-I and IGFBP-3 have important roles in growth and development. In this study, we investigated the effects of exercise during pregnancy on maternal plasma levels of GH, IGF-I and IGFBP-3 and on fetal development. We also recorded the weights of placenta, lengths of umbilical cord, fetal body weights, fetal heights, and weights of fetal tissues. Pregnant Wistar Albino rats were divided into two groups: exercise and control groups (n = 7 for each). A treadmill exercise was performed as 20 m/min for 20 min/day, once per day for 19 days in exercise group. Blood samples were collected from pregnant rats on 0, 7th, 14th and 20th days of gestation (D) under anesthesia with intracardiac puncture, and maternal plasma levels of GH, IGF-I and IGFBP-3 were determined. Fetuses were taken with cesarean section on D20, and various parameters for fetal growth were measured. Plasma GH and IGF-I levels were elevated in exercising pregnant rats on D14 and D20, respectively, when compared to controls, and IGFBP-3 levels were increased on D14 and D20. Among the growth parameters examined, only fetal body weights and weights of fetal liver were significantly decreased in the exercise group ( p < 0.01 and p < 0.05, respectively). These results indicate that maternal exercise significantly increases plasma levels of GH, IGF-I and IGFBP-3 in the late period of pregnancy but causes adverse effects on fetal growth. pregnancy; growth hormone; insulin-like growth factor I (IGF-I); insulin-like growth factor binding protein-3 (IGFBP-3); fetus

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Section: Discussionmentioning

confidence: 85%

“…The increase in plasma GH after exercise has been well documented (Galbo 1985;Flanagan et al 1997). Plasma IGF-I response to physical exercise has not been demonstrated consistently, some research groups have observed increments, while others showed no changes (Di Luigi et al 1997;Nguyen et al 1998;Wallace et al 1999).…”

mentioning

confidence: 99%

Increased Plasma Levels of Growth Hormone, Insulin-Like Growth Factor (IGF)-I and IGF-Binding Protein 3 in Pregnant Rats with Exercise

Turgut

Kaptanoǧlu

Emmungil

et al. 2006

Tohoku J. Exp. Med.

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“…Heart rate increases or decreases due to neural and hormonal input and while changes occur quickly, there is a delay in the response of the cardiovascular system during interval exercise. [23][24][25][26] Heart rate recovery takes longer following intense (80% V O 2 reserve) versus moderate exercise (50% V O 2 reserve).…”

Section: Discussionmentioning

confidence: 99%

Physiological Response to Cyclocross Racing

Carmichael¹,

Heikkinen²,

Mullin³

et al. 2017

Sport Exerc Med Open J

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Introduction: Cyclocross is a growing discipline of cycling that combines elements of both mountain biking and road racing. The purpose of the study was to describe the intensity of the sport of cyclocross using competition heart rate (HR) and blood lactate [La -] data. Methods: Eight experienced cyclocross racers participated in both a laboratory graded exercise test and a cyclocross race. During laboratory testing, peak oxygen consumption (V O 2peak ) was determined and HR at the following intensities was established: LOW (HR below 2 mmol . L -1 ), MODERATE (MOD, HR between 2 and 4 mmol . L -1 ), and HIGH (HR above 4 mmol

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“…The metabolic demand of working muscles during exercise is triggered by sympathoadrenal activity and an increase of plasma adrenalin' 14 '. In addition, enhanced sympathetic nerve activity later after coarctation repair may be caused by functional changes of the baroreceptors due to structural abnormalities of the precoarctation vessels 1 ' 6 '.…”

Section: Discussionmentioning

confidence: 99%

Arm-leg pressure gradients on late follow-up after coarctation repair: Possible causes and implications

Guenthard

Zumsteg

Wyler

1996

European Heart Journal

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Seventeen years after coarctation repair, 36 patients were studied by magnetic resonance imaging and exercise testing to measure residual anatomical stenosis and hormonal response to exercise, and to evaluate their effect on arm-leg gradients and on exercise hypertension. The systolic arm pressure, leg pressure and arm-leg gradient were measured at rest and during exercise. Active renin and catecholamines were measured in the plasma at rest and after peak exercise. On magnetic resonance imaging 18 patients had residual stenosis of less than 30% (group I) and 18 had residual stenosis of equal to or more than 30% (group II). At peak exercise, the arm pressure was 235 (133-296) mmHg in group I and 241 (157-286) mmHg in group II (ns), the leg pressure was 138 (111-173) mmHg in group I and 114 (75-154) mmHg in group II (/>=0-002). The adrenalin increase from rest to exercise was 32-7 ± 91 pg . ml" ' in the patients with exercise hypertension and 31 ± 4-7 pg. ml ~' in the patients who remained normotensive during exercise (/ > =002). In conclusion, residual anatomical stenosis leads to a pressure drop in the legs, which influences the arm-leg gradient. Arm hypertension is not related to anatomical narrowing but to interaction of enhanced sympathetic nerve activity and structural and functional abnormality of the precoarctation vessels. (Eur Heart J 1996; 17: 1572-1575)

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The hormonal response to exercise

Cited by 74 publications

References 90 publications

Increased Plasma Levels of Growth Hormone, Insulin-Like Growth Factor (IGF)-I and IGF-Binding Protein 3 in Pregnant Rats with Exercise

Increased Plasma Levels of Growth Hormone, Insulin-Like Growth Factor (IGF)-I and IGF-Binding Protein 3 in Pregnant Rats with Exercise

Physiological Response to Cyclocross Racing

Arm-leg pressure gradients on late follow-up after coarctation repair: Possible causes and implications

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