Sex differences in diaphragmatic fatigue: Effects of hypoxia during inspiratory loading

2020 ◽  
Author(s):  
Bruno Archiza ◽  
Paige A. Reinhard ◽  
Joseph F. Welch ◽  
A. William Sheel
Keyword(s):  
Sex Differences ◽  
Diaphragmatic Fatigue

scholarly journals Sex Differences In Exercise-induced Diaphragmatic Fatigue In Endurance-trained Athletes

2010 ◽  
Author(s):  
Jordan A. Guenette ◽  
Lee M. Romer ◽  
Jordan S. Querido ◽  
Romeo Chua ◽  
Neil D. Eves ◽  
...  
Keyword(s):  
Sex Differences ◽  
Diaphragmatic Fatigue ◽  
Exercise Induced

scholarly journals Sex differences in diaphragmatic fatigue and the metaboreflex following inspiratory pressure-threshold loading

2018 ◽  
Vol 596 (19) ◽  
pp. 4579-4580
Author(s):  
Christina D. Bruce ◽  
Alexandra F. Yacyshyn ◽  
Luca Ruggiero
Keyword(s):  
Sex Differences ◽  
Inspiratory Pressure ◽  
Pressure Threshold ◽  
Diaphragmatic Fatigue

scholarly journals Sex differences in exercise-induced diaphragmatic fatigue in endurance-trained athletes

2010 ◽  
Vol 109 (1) ◽  
pp. 35-46 ◽  
Author(s):  
Jordan A. Guenette ◽  
Lee M. Romer ◽  
Jordan S. Querido ◽  
Romeo Chua ◽  
Neil D. Eves ◽  
...  
Keyword(s):  
Sex Differences ◽  
Aerobic Capacity ◽  
Female Athletes ◽  
Maximal Aerobic Capacity ◽  
Transdiaphragmatic Pressure ◽  
Pressure Time ◽  
Diaphragmatic Fatigue ◽  
Exercise Induced ◽  
Pressure Time Product ◽  
Diaphragm Fatigue

There is evidence that female athletes may be more susceptible to exercise-induced arterial hypoxemia and expiratory flow limitation and have greater increases in operational lung volumes during exercise relative to men. These pulmonary limitations may ultimately lead to greater levels of diaphragmatic fatigue in women. Accordingly, the purpose of this study was to determine whether there are sex differences in the prevalence and severity of exercise-induced diaphragmatic fatigue in 38 healthy endurance-trained men ( n = 19; maximal aerobic capacity = 64.0 ± 1.9 ml·kg−1·min−1) and women ( n = 19; maximal aerobic capacity = 57.1 ± 1.5 ml·kg−1·min−1). Transdiaphragmatic pressure (Pdi) was calculated as the difference between gastric and esophageal pressures. Inspiratory pressure-time products of the diaphragm and esophagus were calculated as the product of breathing frequency and the Pdi and esophageal pressure time integrals, respectively. Cervical magnetic stimulation was used to measure potentiated Pdi twitches (Pdi,tw) before and 10, 30, and 60 min after a constant-load cycling test performed at 90% of peak work rate until exhaustion. Diaphragm fatigue was considered present if there was a ≥15% reduction in Pdi,tw after exercise. Diaphragm fatigue occurred in 11 of 19 men (58%) and 8 of 19 women (42%). The percent drop in Pdi,tw at 10, 30, and 60 min after exercise in men ( n = 11) was 30.6 ± 2.3, 20.7 ± 3.2, and 13.3 ± 4.5%, respectively, whereas results in women ( n = 8) were 21.0 ± 2.1, 11.6 ± 2.9, and 9.7 ± 4.2%, respectively, with sex differences occurring at 10 and 30 min ( P < 0.05). Men continued to have a reduced contribution of the diaphragm to total inspiratory force output (pressure-time product of the diaphragm/pressure-time product of the esophagus) during exercise, whereas diaphragmatic contribution in women changed very little over time. The findings from this study point to a female diaphragm that is more resistant to fatigue relative to their male counterparts.

scholarly journals Sex differences in diaphragmatic fatigue: do young women have an advantage?

2018 ◽  
Vol 596 (22) ◽  
pp. 5303-5304
Author(s):  
Claire M. DeLucia ◽  
Daniel H. Craighead
Keyword(s):  
Sex Differences ◽  
Young Women ◽  
Diaphragmatic Fatigue

scholarly journals Sex Differences in Diaphragmatic Fatigue

2018 ◽  
Vol 50 (5S) ◽  
pp. 286-287
Author(s):  
Joseph F. Welch ◽  
Bruno Archiza ◽  
Jordan A. Guenette ◽  
Christopher R. West ◽  
A. William Sheel
Keyword(s):  
Sex Differences ◽  
Diaphragmatic Fatigue

scholarly journals No Sex Differences In Diaphragmatic Fatigue When Matched For Absolute Force During Inspiratory Pressure-threshold Loading

2019 ◽  
Vol 51 (Supplement) ◽  
pp. 16
Author(s):  
Caitlin M. Geary ◽  
Joseph F. Welch ◽  
Malcolm R. McDonald ◽  
Carli M. Peters ◽  
Paige A. Reinhard ◽  
...  
Keyword(s):  
Sex Differences ◽  
Inspiratory Pressure ◽  
Pressure Threshold ◽  
Diaphragmatic Fatigue

scholarly journals Sex differences in diaphragmatic fatigue: the cardiovascular response to inspiratory resistance

2018 ◽  
Vol 596 (17) ◽  
pp. 4017-4032 ◽  
Author(s):  
Joseph F. Welch ◽  
Bruno Archiza ◽  
Jordan A. Guenette ◽  
Christopher R. West ◽  
A. William Sheel
Keyword(s):  
Sex Differences ◽  
Cardiovascular Response ◽  
Diaphragmatic Fatigue ◽  
Inspiratory Resistance

Author response for "Sex differences in the brains of capuchin monkeys ( Sapajus [Cebus] apella )"

2020 ◽  
Author(s):  
Erin E. Hecht ◽  
Olivia T. Reilly ◽  
Marcela Benítez ◽  
Kimberley A. Phillips ◽  
Sarah Brosnan
Keyword(s):  
Sex Differences ◽  
Cebus Apella ◽  
Author Response ◽  
Capuchin Monkeys
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