Changes in peak expiratory flow and respiratory strength during the menstrual cycle

Silva, Selma Bruno da; Viana, Elizabel de S R; Sousa, Maria Bernardete Cordeiro de

doi:10.1016/j.resp.2005.03.001

Cited by 39 publications

(27 citation statements)

References 34 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…These findings were found to be on par with various studies. 9,13,15 Our PEFR values partially matched with the results of Hebber KR and Kannan N in the way that their values of PEFR were in follicular phase were less than in menstrual phase. 8,14 While Chong E et al found minimal effect of menstrual cycle on PEFR in healthy non asthmatic Asian women.…”

Section: Discussionsupporting

confidence: 85%

“…14 The trend of our FVC values in different phases were not in accordance with Da Silva SB et al and Das TK. 15,16 The FEV1 values of proliferative phase were significantly higher compared to menstrual phase (p<0.001) In the same fashion the values of FEV1 were significantly higher in secretory phase as compared to proliferative phase with (p<0.001). The maximum difference in the values of FEV1 was found between menstrual and secretory phase (p<0.001).…”

Section: Discussionmentioning

confidence: 65%

“…8,14 The trend of present FEV1 values in different phases were not in accordance with Da Silva SB et al and Das TK. 15,16 They did not find significant difference of FEV1 in different phases of menstrual cycle.…”

Section: Discussionmentioning

confidence: 88%

See 2 more Smart Citations

Effects of different phases of menstrual cycle on lung functions in young girls of 18-24 years age

2017

View full text Add to dashboard Cite

Background: The dynamic cyclical changes in the levels of various hormones during different phases of menstrual cycle are known to affect functioning of different systems of the body, including the respiratory system. Objective of the study was to study the effects of different phases of menstrual cycle on lung functions in young girls of 18-24 years age.Methods: 78 girls who were medical students of G.R. Medical College, Gwalior, India were chosen for the study. Their lung function parameters were recorded on Spiro Excel, a computerized spirometer. Four lung function parameters i.e. FVC, FEV1, FEV1/FVC% and PEFR were recorded in the different phases of menstrual cycle i.e. menstrual phase, proliferative phase and secretory phase.Results: All lung function parameters except FEV1/FVC% were least in menstrual phase and highest in secretory phase with in between values in proliferative phase. The values were significantly different among the three phases. FEV1/FVC% values were maximum in menstrual phase, lowest in secretory phase with intermediate values in proliferative phase but the values were not significantly different among the three phases. Mean values of FVC, FEV1 and PEFR were higher in all the phases of menstrual cycle in normal BMI subjects as compared to the corresponding phases of underweight subjects.Conclusions: Higher values of lung functions during proliferative and secretory phases can be attributed to the higher concentrations of sex hormones specially progesterone because in most of the studies progesterone is known to cause relaxation of bronchial smooth muscle.

show abstract

Section: Discussionsupporting

confidence: 85%

Section: Discussionmentioning

confidence: 65%

See 1 more Smart Citation

Effects of different phases of menstrual cycle on lung functions in young girls of 18-24 years age

2017

View full text Add to dashboard Cite

show abstract

“…This has great clinical relevance, given that, in neuromuscular diseases 42,43 , reduced respiratory muscle strength can be detected prior to the decrease in lung volume 44 . During adolescence, the changes that presumably occur up to physiological maturity are influenced by sex hormones, which may directly or indirectly interfere with respiratory muscle strength 11,45 . Silva et al 45 analyzed the changes in PEF and respiratory muscle strength during the menstrual cycle of healthy women and recorded a correlation between estradiol and progesterone levels, indicating a positive influence of female sex hormones on respiratory muscle strength in the luteal phase.…”

mentioning

confidence: 99%

Prediction equations for maximal respiratory pressures of Brazilian adolescents

Mendes

Campos

Macêdo

et al. 2013

Braz. J. Phys. Ther.

View full text Add to dashboard Cite

| Background: The literature emphasizes the need for studies to provide reference values and equations able to predict respiratory muscle strength of Brazilian subjects at different ages and from different regions of Brazil. Objectives: To develop prediction equations for maximal respiratory pressures (MRP) of Brazilian adolescents. Method: In total, 182 healthy adolescents (98 boys and 84 girls) aged between 12 and 18 years, enrolled in public and private schools in the city of Natal-RN, were evaluated using an MVD300 digital manometer (Globalmed ® ) according to a standardized protocol. Statistical analysis was performed using SPSS Statistics 17.0 software, with a significance level of 5%. Data normality was verified using the Kolmogorov-Smirnov test, and descriptive analysis results were expressed as the mean and standard deviation. To verify the correlation between the MRP and the independent variables (age, weight, height and sex), the Pearson correlation test was used. To obtain the prediction equations, stepwise multiple linear regression was used. Results: The variables height, weight and sex were correlated to MRP. However, weight and sex explained part of the variability of MRP, and the regression analysis in this study indicated that these variables contributed significantly in predicting maximal inspiratory pressure, and only sex contributed significantly to maximal expiratory pressure. Conclusion: This study provides reference values and two models of prediction equations for maximal inspiratory and expiratory pressures and sets the necessary normal lower limits for the assessment of the respiratory muscle strength of Brazilian adolescents.Keywords: adolescent; respiratory muscles; spirometry; muscle strength; reference values; movement. HOW TO CITE THIS ARTICLE

show abstract

“…The most accepted explanation for this difference involves the existence of greater amount of lean body mass in boys, which is even greater after puberty 8 , and to the fact that, in general, the males are more physically active 23 . In females, hormonal changes play an important role in puberty and during the menstrual cycle may interfere in MRP measures as it was verified by Silva et al 24 These authors commented on the existence of a positive influence of estradiol and progesterone hormones on the respiratory muscle strength in the luteal phase.…”

Section: Discussionmentioning

confidence: 88%

Respiratory muscle strength of Brazilian adolescents: obtained and predicted values

Furtado

Campos

Mendes

et al. 2014

J. Hum. Growth Dev.

View full text Add to dashboard Cite

Changes in peak expiratory flow and respiratory strength during the menstrual cycle

Cited by 39 publications

References 34 publications

Effects of different phases of menstrual cycle on lung functions in young girls of 18-24 years age

Effects of different phases of menstrual cycle on lung functions in young girls of 18-24 years age

Prediction equations for maximal respiratory pressures of Brazilian adolescents

Respiratory muscle strength of Brazilian adolescents: obtained and predicted values

Contact Info

Product

Resources

About