Sex Differences in Cardiac Function of a Group of Young Adults

Cardiology ◽  
1980 ◽  
Vol 66 (2) ◽  
pp. 74-84 ◽  
Author(s):  
Walter K. Harrison ◽  
Eldrid Smith
Keyword(s):  
Young Adults ◽  
Sex Differences ◽  
Cardiac Function

Numbers of granulocytes in thymic imprints of rabbits of different ages and degrees of coccidial parasitism

1969 ◽  
Vol 47 (6) ◽  
pp. 1355-1362
Author(s):  
Jean E. Mills Westermann ◽  
Vibeke E. Engelbert
Keyword(s):  
Young Adults ◽  
Sex Differences ◽  
Young Adult ◽  
Normal Adult ◽  
Polymorphonuclear Cells ◽  
Different Ages ◽  
Blood Eosinophils

Counts of granulocytes were performed on thymic imprints from normal rabbits 3 days old, 2–3 weeks old, and young adults, and from young adult rabbits mildly and severely parasitized with coccidiosis. Analyses of percentages of eosinophils, heterophils, and basophils indicated no sex differences. Comparisons of relative numbers of granulocytes in normal rabbits showed that young adult rabbits possessed more eosinophils and fewer basophils than the younger groups (no differences in heterophils); 3-day-old rabbits had more eosinophils than the 2-to 3-week animals (no differences in heterophils and basophils). No differences in relative numbers of the various granulocytes were found in the mildly and severely parasitized rabbits, but there was a decrease in eosinophils in the parasitized rabbits when compared with the young normal adult rabbits. Eosinophilic leukocytes were divided into two groups: the mononuclear "tissue" line and the lobated "blood" line of development. In the 3-day-old rabbits about 95% of eosinophils were of the lobed variety but in the older normal rabbits, the two developmental lines were about equal in numbers. When compared with the normal young adult rabbits, parasitized rabbits have increased percentages of "blood" eosinophils as a result of greater numbers of band and polymorphonuclear cells.

Sex Differences in Cardiac Function After Prolonged Strenuous Exercise

2015 ◽  
Vol 25 (3) ◽  
pp. 276-283 ◽  
Author(s):  
Anita T. Cote ◽  
Aaron A. Phillips ◽  
Heather J. Foulds ◽  
Sarah A. Charlesworth ◽  
Shannon S.D. Bredin ◽  
...  
Keyword(s):  
Sex Differences ◽  
Cardiac Function ◽  
Strenuous Exercise

scholarly journals Testosterone modulates cardiomyocyte Ca2+ handling and contractile function

2009 ◽  
pp. 293-297 ◽  
Author(s):  
CL Curl ◽  
LMD Delbridge ◽  
BJ Canny ◽  
IR Wendt
Keyword(s):  
Sex Differences ◽  
Cardiac Function ◽  
Time Course ◽  
Direct Evidence ◽  
Contractile Function ◽  
Testosterone Replacement

The extent to which sex differences in cardiac function may be attributed to the direct myocardial influence of testosterone is unclear. In this study the effects of gonadal testosterone withdrawal (GDX) and replacement (GDX+T) in rats, on cardiomyocyte shortening and intracellular Ca2+ handling was investigated (0.5 Hz, 25 o C). At all extracellular [Ca2+] tested (0.5-2.0 mM), the Ca2+ transient amplitude was significantly reduced (by ~ 50 %) in myocytes of GDX rats two weeks postgonadectomy. The time course of Ca2+ transient decay was significantly prolonged in GDX myocytes (tau, 455±80 ms) compared with intact (279±23 ms) and GDX+T (277±19 ms). Maximum shortening of GDX myocytes was markedly reduced (by more than 60 %) and relaxation significantly delayed (by more than 35 %) compared with intact and GDX+T groups. Thus testosterone replacement completely reversed the cardiomyocyte hypocontractility induced by gonadectomy. These results provide direct evidence for a role of testosterone in regulating functional Ca2+ handling and contractility in the heart.

scholarly journals Sex Differences in the Sleep EEG of Young Adults: Visual Scoring and Spectral Analysis

SLEEP ◽  
1989 ◽  
Vol 12 (6) ◽  
pp. 500-507 ◽  
Author(s):  
Derk Jan Dijk ◽  
Domien G. M. Beersma ◽  
Gerda M. Bloem
Keyword(s):  
Young Adults ◽  
Sex Differences ◽  
Spectral Analysis ◽  
Sleep Eeg ◽  
Visual Scoring

Sex Differences in the Velocity of Muscle Contraction of the Hamstring and Quadriceps Among Recreationally Active Young Adults

2019 ◽  
Vol 33 (5) ◽  
pp. 1252-1257
Author(s):  
Rodrigo Martín-San Agustín ◽  
Francesc Medina-Mirapeix ◽  
Yasser Alakhdar ◽  
Josep C. Benítez-Martínez
Keyword(s):  
Young Adults ◽  
Sex Differences ◽  
Muscle Contraction

scholarly journals Twenty Year Trends and Sex Differences in Young Adults Hospitalized With Acute Myocardial Infarction

Circulation ◽  
2019 ◽  
Vol 139 (8) ◽  
pp. 1047-1056 ◽  
Author(s):  
Sameer Arora ◽  
George A. Stouffer ◽  
Anna M. Kucharska-Newton ◽  
Arman Qamar ◽  
Muthiah Vaduganathan ◽  
...  
Keyword(s):  
Myocardial Infarction ◽  
Acute Myocardial Infarction ◽  
Young Adults ◽  
Sex Differences

Does the musical tempo enhance physical performance?

2020 ◽  
pp. 030573562090477
Author(s):  
Jorge A Aburto-Corona ◽  
J A de Paz ◽  
José Moncada-Jiménez ◽  
Bryan Montero-Herrera ◽  
Luis M Gómez-Miranda
Keyword(s):  
Heart Rate ◽  
Young Adults ◽  
Sex Differences ◽  
Physical Performance ◽  
Perceived Exertion ◽  
Young Male ◽  
Constant Speed ◽  
Rating Of Perceived Exertion ◽  
Male And Female ◽  
Musical Tempo

The purpose of this study was to determine the effect of the musical tempo on heart rate (HR), rating of perceived exertion (RPE), and distance run (DR) during a treadmill aerobic test in young male and female adults. Participants ran on the treadmill listening to music at 140 beats per minute (bpm; M140), 120 bpm (M120), or without music (NM). No significant sex differences were found on HR (M140 = 172.6 ± 12.7, M120 = 171.9 ± 11.1, NM = 170.1 ± 12.2 bpm, p = .312), RPE (M140 = 7.5 ± 1.4, M120 = 7.6 ± 1.3, NM = 7.6 ± 1.2, p = .931), or DR (M140 = 4,791.4 ± 2,681.1, M120 = 4,900.0 ± 2,916.9, NM = 4,356.1 ± 2,571.2 m, p = .715). Differences were found in the effect of tempo on HR between condition M140 and NM (172.6 ± 12.7 vs. 170.1 ± 12.2 bpm, p = .044, η2 = 0.32). In conclusion, musical tempo does not affect performance, physiological, or perceptual variables in young adults exercising on a treadmill at a constant speed.

scholarly journals Racial and sex differences in biological and chronological heart age in the Coronary Artery Risk Development in Young Adults study

2019 ◽  
Vol 33 ◽  
pp. 24-29
Author(s):  
Rachel Zmora ◽  
Pamela J. Schreiner ◽  
Duke Appiah ◽  
Donald M. Lloyd-Jones ◽  
Jamal S. Rana ◽  
...  
Keyword(s):  
Young Adults ◽  
Sex Differences ◽  
Coronary Artery ◽  
Heart Age

A Network Analysis of Domestic Violence Beliefs Among Young Adults in India

2019 ◽  
pp. 088626051988992 ◽  
Author(s):  
Ana L. Rodriguez ◽  
Dionne P. Stephens ◽  
Eric Brewe ◽  
Indira Ramarao ◽  
Purnima Madhivanan
Keyword(s):  
Domestic Violence ◽  
Young Adults ◽  
Sex Differences ◽  
Network Analysis ◽  
Gender Ideology ◽  
Attitudes Toward Women ◽  
Social Consequences ◽  
Wife Beating ◽  
Female Participant ◽  
Women’S Perceptions

This study sought to describe the system of beliefs on gender, attitudes toward women, and wife beating, in young adults who live in Mysore, India. Furthermore, it identified structural sex differences in the interplay of values among these matters that can affect individual and community views toward domestic violence. Drawing from survey data gathered from 265 young adult Indian men and women, this study used network analysis to graph a correlation network of beliefs and attitudes toward domestic violence. Node, scale, and network structure descriptions allowed for comparisons among male and female participant responses. The findings support the assertion that there are sex differences among the system of beliefs toward wife beating among Indian young adults. Gender ideology, masculine role in relationships, and legal and social consequences of wife beating emerged as the most important values to focus on when addressing young men’s beliefs of domestic violence and attitudes toward women. In contrast, values influencing women’s perceptions of domestic violence are more complex and related to multiple beliefs about women’s power, family structure, and social and legal implications of domestic violence. The results highlight the importance of recognizing gender differences in the connectivity between gender and wife beating beliefs when designing interventions. There is a need for efforts to accurately target these values and attitudes to more effectively address gendered attitudes and beliefs about domestic violence in this population.

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