Changes in Neuromuscular Performance throughout the Menstrual Cycle in Physically Active Females

2016 ◽  
Vol 48 ◽  
pp. 510
Author(s):  
Lee A. Weidauer ◽  
Joe Albert ◽  
Mary Beth Zwart ◽  
Jeffrey Clapper ◽  
Bonny Specker ◽  
...  
Keyword(s):  
Menstrual Cycle ◽  
Physically Active ◽  
Neuromuscular Performance

scholarly journals Influence of Menstrual Cycle Estradiol-β-17 Fluctuations on Energy Substrate Utilization-Oxidation during Aerobic, Endurance Exercise

2021 ◽  
Vol 18 (13) ◽  
pp. 7209
Author(s):  
Hannah N. Willett ◽  
Kristen J. Koltun ◽  
Anthony C. Hackney
Keyword(s):  
Menstrual Cycle ◽  
Athletic Performance ◽  
Luteal Phase ◽  
Substrate Utilization ◽  
Follicular Phase ◽  
Exercise Session ◽  
Future Research ◽  
Physically Active ◽  
Energy Substrate ◽  
Fat Utilization

This study examined the effect of estradiol-β-17 across the menstrual cycle (MC) during aerobic exercise on energy substrate utilization and oxidation. Thirty-two eumenorrheic (age = 22.4 ± 3.8 y (mean ± SD)), physically active women participated in two steady-state running sessions at 65% of VO2max, one during the early follicular and one during the luteal phase of the MC. Blood samples were collected at rest before each exercise session and analyzed for Estradiol-β-17 to confirm the MC phase. Carbohydrate (CHO) utilization and oxidation values were significantly lower (p < 0.05) in the luteal (utilization: 51.6 ± 16.7%; oxidation: 1.22 ± 0.56 g/min; effect size (ES) = 0.45, 0.27) than follicular phase (utilization: 58.2 ± 15.1%; oxidation: 1.38 ± 0.60 g/min) exercise sessions. Conversely, fat utilization and oxidation values were significantly (p < 0.05) higher in the luteal (utilization: 48.4 ± 16.7%; oxidation: 0.49 ± 0.19 g/min; ES = 0.45,0.28) than follicular phase (utilization: 41.8 ± 15.1%; oxidation: 0.41 ± 0.14 g/min). Estradiol-β-17 concentrations were significantly (p < 0.01) greater during the luteal (518.5 ± 285.4 pmol/L; ES = 0.75) than follicular phase (243.8 ± 143.2 pmol/L). Results suggest a greater use of fat and reduced amount of CHO usage during the luteal versus follicular phase, directly related to the change in resting estradiol-β-17. Future research should investigate the role these changes may play in female athletic performance.

Influence of moderate physical activity, including physical activity during menstruation, on the course of menstrual cycle among nullipara — an attempt to evaluate

2021 ◽  
Vol 16 (3) ◽  
pp. 1-6
Author(s):  
Aleksandra Szpak
Keyword(s):  
Physical Activity ◽  
Menstrual Cycle ◽  
Premenstrual Syndrome ◽  
Moderate Level ◽  
Menstrual Bleeding ◽  
Moderate Physical Activity ◽  
Menstrual Pain ◽  
Physically Active ◽  
Menstrual Cycles ◽  
Premenstrual Tension

This study is specifically concerned with the effect of regular physical activity during menstruation on the course of menstrual cycle among nullipara. Based on the author’s questionnaire, the 152 women participating in the study were divided into three groups A, B and C – depending on their level of physical activity. The physical activity at a moderate level does not significantly affect the regularity of menstrual cycles. The cultivation of moderate physical activity during menstruation does not significantly affect the duration of bleeding. Moderate physical activity is irrelevant to the abundance of menstrual bleeding. Moderate physical activity has no significant effect on menstrual pain and its duration. Women who are physically active at a moderate level throughout their menstrual cycle are less likely to experience symptoms of premenstrual syndrome (PMS) than women who are only physically active outside of menstruation and are not physically active, which may indicate that moderate physical activity during menstruation prevents symptoms of premenstrual tension syndrome. Based on the results achieved, it is not possible to clearly determine the relevance of promoting moderate physical activity, with particular emphasis on that during menstruation, among women. The study needs to be continued with particular attention paid to physical activity during the day, the influence of environmental factors and stress on the examined women, and with attention paid to the intensity of pain accompanying bleeding. However, it can be assumed that there is no justification for limiting physical activity during the menstrual bleeding phase.

scholarly journals Adiposity Measures and Menstrual Cycle: Do We Envisage a Relation?

2011 ◽  
Vol 2011 ◽  
pp. 1-5
Author(s):  
Rashmi Sinha ◽  
Anup Kumar Kapoor ◽  
Satwanti Kapoor
Keyword(s):  
Physical Activity ◽  
Body Mass Index ◽  
Menstrual Cycle ◽  
Body Mass ◽  
Premenopausal Women ◽  
Impedance Method ◽  
Age At Menarche ◽  
Cycle Duration ◽  
Physically Active ◽  
The Relationship

The study aims to see the relationship between menstrual cycle and adiposity measures in Indian populations as menstrual cycle length has an important bearing on fertility and health of women. 415 premenopausal women in the ages 22–50 years residing in Delhi, India constituted the data. The adiposity was assessed by BMI as well as by using Bio-electric impedance method. The information regarding their physical activity pattern and menstrual cycle was recorded, and age at menarche was obtained through recall method. None of the underweight category women had menstrual cycle of less than 25 days. A decrease in body mass index and an increase in the age at menarche were found with the increase in the duration of menstrual cycle. The majority of women with 25–35 days duration of menstrual cycle in the present study were distributed in all the categories of BMI. Age was found to have no effect on longer cycle. The majority of women were in moderately physically active group and experienced menstrual cycle duration of 25–35 days. It is of utmost importance to identify the effects of moderate levels of physical activity, body mass index, and age at menarche on the menstrual cycle to enable the normal reproductive health of women.

scholarly journals Ferritin status impact on hepcidin response to endurance exercise in physically active women along different phases of the menstrual cycle

2021 ◽  
Vol 38 (1) ◽  
pp. 22-27
Author(s):  
VM Alfaro Magallanes ◽  
L Barba Moreno ◽  
AB Peinado
Keyword(s):  
Menstrual Cycle ◽  
Follicular Phase ◽  
Cycle Phase ◽  
Menstrual Cycle Phase ◽  
Sexual Hormones ◽  
Physically Active ◽  
Post Exercise ◽  
Before And After ◽  
Early Follicular Phase ◽  
Response To Exercise

Serum ferritin has been proposed as a predictor of hepcidin concentrations in response to exercise. However, this fact has not been studied in physically-active women. Therefore, the main objective of this study was to analyse the hepcidin response at different ferritin status before and after running exercise in physically active females. Fifteen eumenorrheic women performed a 40-min running protocol at 75% of VO2peak speed in different menstrual cycle phases (early-follicular phase, mid-follicular phase and luteal phase). Blood samples were collected pre-exercise, 0h post-exercise and 3h post-exercise. For statistics, participants were divided into two groups according to their pre-exercise ferritin levels (<20 and ≥20 μg/L). Through menstrual cycle, hepcidin was lower in both early follicular phase (p=0.024; 64.81±22.48 ng/ml) and mid-follicular phase (p=0.007; 64.68±23.91 ng/ml) for <20 μg/L ferritin group, in comparison with ≥20 μg/L group (81.17±27.89 and 79.54±22.72 ng/ml, respectively). Hepcidin showed no differences between both ferritin groups in either pre-exercise, 0h post-exercise and 3h post-exercise. Additionally, no association between pre-exercise ferritin and hepcidin levels 3h post-exercise (r=-0.091; p=0.554) was found. Menstrual cycle phase appears to influence hepcidin levels depending on ferritin reserves. In particular, physically-active females with depleted ferritin reserves seems to present lower hepcidin levels during the early-follicular phase and mid-follicular phase. However, no association between ferritin and hepcidin levels was found in this study. Hence, ferritin levels alone may not be a good predictor of hepcidin response to exercise in this population. Multiple factors such as sexual hormones, training loads and menstrual bleeding must be taken into account.

The effect of the menstrual cycle on collagen metabolism, growth hormones and strength in young physically active women

2021 ◽  
Vol 38 (4) ◽  
pp. 721-728
Author(s):  
Dagmara Iwańska ◽  
Anna Kęska ◽  
Emilia Dadura ◽  
Agnieszka Wójcik ◽  
Andrzej Mastalerz ◽  
...  
Keyword(s):  
Menstrual Cycle ◽  
Growth Hormones ◽  
Collagen Metabolism ◽  
Physically Active

scholarly journals Effects of Estrogen Fluctuation during the Menstrual Cycle on the Response to Stretch-Shortening Exercise in Females

2013 ◽  
Vol 2013 ◽  
pp. 1-6 ◽  
Author(s):  
Saulė Sipavičienė ◽  
Laura Daniusevičiutė ◽  
Irina Klizienė ◽  
Sigitas Kamandulis ◽  
Albertas Skurvydas
Keyword(s):  
Menstrual Cycle ◽  
Low Frequency ◽  
Peak Torque ◽  
Voluntary Contraction ◽  
Follicular Phase ◽  
Cycle Exercise ◽  
Physically Active ◽  
Drop Jumps ◽  
Stretch Shortening Cycle ◽  
Estrogen Effect

The aim of this study was to investigate whether variation in estrogen levels during the menstrual cycle influences susceptibility to exercise-induced muscle damage after stretch-shortening cycle exercise. Physically active women (n=18; age = 20.2 ± 1.7 yr) participated in this research. The subjects performed one session of 100 maximal drop jumps on day 1 or 2 of the follicular phase and another identical session on day 1 or 2 of the ovulatory phase; the order of the sessions was randomized. Quadriceps femoris muscle peak torque evoked by electrical stimulation and maximal voluntary contraction, muscle pain, and CK activity were measured before and at various times up to 72 h after exercise. It was found that the high estrogen level during the ovulatory phase might be related to an earlier return to baseline muscle strength after strenuous stretch-shortening cycle exercise in that phase compared with the follicular phase. The estrogen effect appears to be highly specific to the damaged site because the differences in most EIMD markers (CK, soreness, and low-frequency fatigue) between the two menstrual cycle phases were small.

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