Effects of menstrual cycle on metabolic responses to exercise

1983 ◽  
Vol 55 (5) ◽  
pp. 1506-1513 ◽  
Author(s):  
A. Bonen ◽  
F. J. Haynes ◽  
W. Watson-Wright ◽  
M. M. Sopper ◽  
G. N. Pierce ◽  
...  
Keyword(s):  
Menstrual Cycle ◽  
Luteal Phase ◽  
Vo2 Max ◽  
Hormonal Responses ◽  
Group A ◽  
Two Phases ◽  
Exercise Induced ◽  
Induced Changes ◽  
And Control ◽  
Glucose Group

Selected substrate and hormonal responses to exercise were compared in two phases of the menstrual cycle. Exercise-induced changes in substrate [glucose, lactate, free fatty acids (FFA), glycerol] and hormonal patterns [luteinizing hormone (LH), follicle-stimulating hormone (FSH), insulin, progesterone (P), growth hormone (GH), cortisol] were compared in the follicular and luteal phases of the menstrual cycle in 24-h-fasted (n = 5), glucose-loaded (n = 6; 1.50 g/kg, 20% solution), and control subjects (n = 8). A treadmill walk was maintained for 60 min (30 min, 40% VO2 max; 30 min, 80% VO2 max). Blood samples were obtained 5 min before, 15, 30, 45, and 60 min during, and 30 min after exercise. In the glucose group a blood sample was also taken 20 min before exercise, and glucose was ingested 15 min before exercise. Within each nutritional group the metabolic and endocrine responses to exercise were similar in the two phases for glucose, lactate, glycerol, LH, FSH, and cortisol (P greater than 0.05). In the glucose group the FFA response was lower in the luteal phase (P less than 0.05). In the fasted subjects insulin and GH responses were elevated in the luteal phase (P less than 0.05). P responses in the control and glucose groups were markedly greater in the luteal phase (P less than 0.05). In the fasted subjects no alteration in P occurred in either phase (P less than 0.05), and the LH concentration was lower in these subjects relative to the control groups (P less than 0.05).(ABSTRACT TRUNCATED AT 250 WORDS)

Haemodynamic responses to psychosocial stress during the menstrual cycle

1991 ◽  
Vol 81 (1) ◽  
pp. 17-22 ◽  
Author(s):  
Karin Manhem ◽  
Christina Jern ◽  
Martin Pilhall ◽  
Guy Shanks ◽  
Sverker Jern
Keyword(s):  
Blood Pressure ◽  
Heart Rate ◽  
Menstrual Cycle ◽  
Systolic Blood Pressure ◽  
Psychosocial Stress ◽  
Mental Stress ◽  
Luteal Phase ◽  
Follicular Phase ◽  
Two Phases ◽  
Plasma Catecholamine Concentrations

1. The haemodynamic effects of hormonal changes during the menstrual cycle were examined in 11 normotensive women (age 20–46 years). The subjects were studied on days 2–8 (follicular phase) and days 18–26 (luteal phase) in a randomized order. A standardized mental stress test and a 24 h recording of ambulatory blood pressure and heart rate were performed. 2. Pre-stress resting levels of heart rate and blood pressure were similar during the two phases of the menstrual cycle. 3. During mental stress, the heart rate response was significantly greater during the luteal phase than during the follicular phase (14.7 versus 9.7 beats/min; P < 0.05). 4. Blood pressure, plasma catecholamine concentrations and subjective stress experience increased significantly in response to stress, without any significant differences between the two phases. 5. During 24 h ambulatory monitoring, higher levels of systolic blood pressure and heart rate were observed in the luteal phase than in the follicular phase (P < 0.005 and P < 0.0001, respectively). 6. These data indicate that cyclic variations in female sex hormones not only affect systolic blood pressure and heart rate, but also alter the haemodynamic responses to psychosocial stress.

The influence of vigorous aerobic exercise on serum brain-derived neurotrophic factor and estradiol in young, healthy women as a function of the menstrual cycle

2021 ◽  
Author(s):  
Sarah Ahmad ◽  
Rodney Hansen ◽  
Matthew Schmolesky
Keyword(s):  
Menstrual Cycle ◽  
Aerobic Exercise ◽  
Neurotrophic Factor ◽  
Brain Derived Neurotrophic Factor ◽  
Cycle Exercise ◽  
Acute Bout ◽  
Healthy Women ◽  
Exercise Induced ◽  
Induced Changes ◽  
Serum Bdnf

AbstractResearch suggests strong inter-relationships between physical exercise, levels of brain-derived neurotrophic factor (BDNF), levels of estrogen, and the menstrual cycle, and yet no single study has examined these factors collectively in humans. The current study assessed the effect of an acute bout of vigorous aerobic exercise (20 minutes of stationary cycling at 80% of heart rate reserve) on serum BDNF and estradiol in healthy, eumenorrheic women, ages 18-28. In addition, this study determined whether basal BDNF or the exercise-induced increase in BDNF varies throughout the menstrual cycle. Thirty-four subjects were assigned to an experimental (n = 27) or control condition (n = 7). Exercise transiently increased both estradiol (51.2%) and BDNF (23.6%), and basal levels of BDNF and estradiol predicted the magnitude of the exercise-induced increases. Basal BDNF did not vary significantly throughout the menstrual cycle. Exercise-induced changes in BDNF did not correlate with menstrual cycle day or basal estradiol. Basal estradiol and basal BDNF showed a marginally significant positive correlation. Taken together, these results indicate that brief, vigorous aerobic exercise is sufficient to elevate both BDNF and estradiol in healthy women and that the menstrual cycle dramatically influences the magnitude of exercise-induced changes in estradiol, but not BDNF

The inter-relationship of premenstrual symptoms

1995 ◽  
Vol 25 (5) ◽  
pp. 947-955 ◽  
Author(s):  
M. Mira ◽  
S. Abraham ◽  
D. McNeil ◽  
J. Vizzard ◽  
P. Macaskill ◽  
...  
Keyword(s):  
Menstrual Cycle ◽  
Luteal Phase ◽  
Premenstrual Symptom ◽  
Control Group ◽  
Factor Scores ◽  
Premenstrual Symptoms ◽  
Mood Symptoms ◽  
Control Subjects ◽  
Symptom Reports ◽  
And Control

SYNOPSISThe prospective symptom reports of women seeking treatment for premenstrual symptoms and control subjects were investigated. In order to compare symptom reports from premenstrual symptom sufferers and control subjects a method of combining and analysing prospectively collected menstrual cycle symptom data is required. A technique that uses the time of onset of menses and the time of ovulation (as measured by urinary luteinizing hormone excretion) to standardize each cycle into 14 time points was developed. Summary factors were then empirically derived from data collected prospectively from 30 premenstrual symptom sufferers and 19 control subjects. Twenty-two mood symptoms were summarized into a single factor and the 29 most frequently occurring physical symptoms were summarized into two factors. Factor scores were calculated on the basis of these factors and the effect of time during the menstrual cycle on these scores examined. Both physical symptom factor scores increased significantly in the luteal phase for both the premenstrual symptom sufferer group and the control group. The single mood factor score increased significantly in the luteal phase for the premenstrual symptom sufferer group but not for the control group, suggesting that the only qualitative difference between the groups was the presence of cyclic mood symptoms in the premenstrual symptom sufferer group. The premenstrual symptom sufferer group recorded significantly higher scores on each of the three factors than the control group. The correlation between the scores on each of the factors over three cycles was high both in the follicular and luteal phase suggesting that these factor scores provide a reproducible measure of menstrual cycle symptomatology.

scholarly journals Serum Periostin Level in Asthmatic Children with Exercise Induced Bronchospasm

2020 ◽  
pp. 53-67
Author(s):  
Reem M. Soliman ◽  
Mohamed B. Hamza ◽  
Rasha M. El-Shafiey ◽  
Hesham A. Elserogy ◽  
Nabil M El-Esawy
Keyword(s):  
Test Group ◽  
Mean Value ◽  
Control Group ◽  
Asthmatic Children ◽  
Group A ◽  
The Mean ◽  
Exercise Induced ◽  
Group B ◽  
And Control ◽  
Serum Periostin

Background: There are few biomarkers that can be easily accessed in clinical settings and may reflect refractory Th2-eosinophlic inflammation and remodeling of the asthmatic airways. Serum periostin may be one such biomarker to aid our understanding of the patho-bio-physiology of asthma and exercise induced asthma. The aim of the study is to explore the relationship between serum periostin level and exercise induced bronchoconstriction in asthmatic children. Materials and Methods: This cross-sectional study was carried out on (90) children both sexes aged from 6 to 15 years including, (60) children with bronchial asthma and (30) children were enrolled as control group in the period from January 2018 to January 2019. Patients were randomly classified into two groups: I) Patient group: divided into 2 groups according to standardized treadmill exercise challenge test: Group A: (30) asthmatic children with positive test. Group B: (30) asthmatic children with negative test. II-Control group: (30) children apparently healthy with no personal or family history of asthma. All children were subjected to the following Investigations: Chest x-ray, pulmonary functions tests (FEV1 & PEFR) except controls, Laboratory investigations as CBC and Serum periostin level. Results: The mean values of both the percentage of PEFR and FEV1 after exercise in group A were significantly lower than those in group B and the percentage of PEFR and FEV1 after exercise in each group were significantly lower than the percentage before exercise in the same group. The mean value of eosinophilic count in group A was significantly higher than (group B and control group) and the mean value of eosinophilic count in group B was significantly higher than control group. The mean value of serum level of periostin in group A was significantly higher than (group B and control group), however, there was no significant difference between group B and control group as regard to serum level of periostin. Chest tightness, cough and wheezes after exercise and eosinophilic count in patients with high serum periostin level were significantly higher than patients with low serum periostin level, and both PEFR and FEV1 after exercise in patients with high serum periostin level were significantly lower than patients with low serum periostin level. Also the normal serum periostin levels vary among different age groups. Conclusion: Serum periostin level can be considered as a useful biomarker for diagnosis of Exercise induced bronchospasm (EIB) in asthmatic children especially when lung function test cannot be done However, cautious is required in evaluating serum periostin levels in children because it varies with age.

Effect of adrenal denervation on the glucose, insulin, and glucagon responses to exercise in sheep

1982 ◽  
Vol 60 (12) ◽  
pp. 1459-1463 ◽  
Author(s):  
Ronald P. Brockman
Keyword(s):  
Insulin Secretion ◽  
Adrenal Gland ◽  
Metabolic Clearance ◽  
Metabolic Clearance Rate ◽  
Hormonal Stimulation ◽  
Hormonal Responses ◽  
Exercise Induced ◽  
The Right ◽  
Induced Changes ◽  
Stimulation Of

Previous studies suggest that adrenal catecholamines mediate, in part, the glucose and pancreatic hormonal responses to exercise in sheep. This was examined in sheep whose adrenals were denervated to prevent stress-induced changes in catecholamine secretion. The innervation to the right adrenal gland was severed and the left adrenal was removed. Adrenal denervation was associated with a reduction in exercise-induced hyperglycemia and impairment, as measured by [2-3H]glucose, of the increase in glucose appearance during the first 10 min of exercise and increased metabolic clearance rate of glucose after 20 min of exercise. Insulin concentrations were significantly higher during exercise after adrenal denervation than in the controls. Adrenal denervation did not alter the rise in glucagon due to exercise. These effects are consistent with adrenomedullary hormonal stimulation of hepatic and muscular glycogenolysis, either directly or indirectly through the regulation of insulin secretion during exercise in sheep.

scholarly journals Blood Glucose Levels at Two Different Phases of Menstrual Cycle: A Study on a Group of Bengali-speaking Hindu Ethnic Populations of West Bengal, India

2019 ◽  
Vol 19 (1) ◽  
pp. 55-63
Author(s):  
Saheli Dey ◽  
Doyel Dasgupta ◽  
Subho Roy
Keyword(s):  
Blood Glucose ◽  
Menstrual Cycle ◽  
Blood Glucose Level ◽  
Blood Sugar ◽  
Glucose Level ◽  
Luteal Phase ◽  
Menstrual Phase ◽  
Glucose Levels ◽  
Two Phases ◽  
Sugar Levels

Aim: We aimed to find out the blood sugar levels at two different phases of menstrual cycle and the factors associated with the change in blood sugar level at these different phases. Material and methods: A total of 60 Bengali-speaking Hindu participants, who were married, aged between 30 and 45 years, have regular menstruation, and not diagnosed as diabetic, were selected for this study. A structured questionnaire was used to collect data on sociodemographic, menstrual, reproductive, and lifestyle variables. Height (cm), weight (kg), and blood glucose level (mg/dl) were measured at two intervals of time: (a) during menstrual phase (between the 1st and 4th day) and (b) during luteal phase (between 19th and 22nd day of the cycle) following standard protocol. Bivariate analyses showed that majority of participants have increased blood glucose level at luteal phase as compared to their menstrual phase. Results: Results reveal that although BMI did not differ significantly between menstrual and luteal phases, there was a positive correlation between changed BMI value and changed blood glucose level measured during menstrual and luteal phases. Multivariate analysis revealed that blood glucose level increased with the increase in BMI level between two phases of menstrual cycle.

Sign in / Sign up

Export Citation Format

Share Document