scholarly journals Thyroid Hormone Levels Within Reference Range Are Associated with Heart Rate, Cardiac Structure, and Function in Middle-Aged Men and Women

Thyroid ◽  
2013 ◽  
Vol 23 (8) ◽  
pp. 947-954 ◽  
Author(s):  
Greet L. Roef ◽  
Youri E. Taes ◽  
Jean-Marc Kaufman ◽  
Caroline M. Van Daele ◽  
Marc L. De Buyzere ◽  
...  
Keyword(s):  
Heart Rate ◽  
Thyroid Hormone ◽  
Reference Range ◽  
Structure And Function ◽  
Cardiac Structure ◽  
Middle Aged ◽  
Men And Women ◽  
Thyroid Hormone Levels ◽  
Cardiac Structure And Function ◽  
And Function

Effects of pregnancy and chronic exercise on maternal cardiac structure and function

1999 ◽  
Vol 77 (11) ◽  
pp. 909-917 ◽  
Author(s):  
L A Wolfe ◽  
R J Preston ◽  
G W Burggraf ◽  
M J McGrath
Keyword(s):  
Heart Rate ◽  
Resting State ◽  
Cycle Ergometer ◽  
Structure And Function ◽  
Cardiac Structure ◽  
Cycle Ergometer Exercise ◽  
Ergometer Exercise ◽  
Aerobic Conditioning ◽  
Cardiac Structure And Function ◽  
And Function

This study examined the interactive effects of pregnancy and aerobic conditioning on maternal cardiac structure and function. Effects of closely monitored cycle ergometer conditioning were studied during the second (TM2) and third trimesters (TM3) in 22 previously sedentary pregnant women (exercised group, EG) and a nonexercising pregnant control group with similar characteristics (CG, n = 19). Subjects were studied in the resting state by two-dimensional echocardiography and during cycle ergometer exercise at three steady-state power outputs at the start of TM2 (ENTRY), at the end of TM2 and TM3 (postconditioning), and 3-4 months postpartum (NPR, nonpregnant reference, CG only). Aerobic conditioning did not increase left ventricular dimensions beyond those attributable to pregnancy itself. In addition, in contrast with previous studies of nonpregnant women, physical conditioning during pregnancy did not reduce heart rate (HR) in the resting state. During exercise, the slope of the HR versus oxygen uptake (Vo2) regression decreased significantly between preconditioning and the end of TM3 in the EG, suggesting that training-induced reductions in HR become more evident with increasing exercise intensity. Also, significant reductions in oxygen pulse (Vo2/HR) were observed at all three work rates in the CG, but not in the EG. These findings support the hypothesis that the cardiovascular effects of aerobic conditioning are obscured by more powerful effects of pregnancy in the resting state but become "unmasked" during strenuous exercise.Key words: human gestation, cycle ergometer exercise, echocardiography, heart rate, stroke volume.

scholarly journals Cardiac Structure and Function Across the Glycemic Spectrum in Elderly Men and Women Free of Prevalent Heart Disease

2015 ◽  
Vol 8 (3) ◽  
pp. 448-454 ◽  
Author(s):  
Hicham Skali ◽  
Amil Shah ◽  
Deepak K. Gupta ◽  
Susan Cheng ◽  
Brian Claggett ◽  
...  
Keyword(s):  
Heart Disease ◽  
Structure And Function ◽  
Cardiac Structure ◽  
Elderly Men ◽  
Men And Women ◽  
Cardiac Structure And Function ◽  
And Function

scholarly journals Chronic Endurance Exercise Impairs Cardiac Structure and Function in Middle-Aged Mice with Impaired Nrf2 Signaling

2017 ◽  
Vol 8 ◽  
Author(s):  
Gobinath Shanmugam ◽  
Madhusudhanan Narasimhan ◽  
Robbie L. Conley ◽  
Thiagarajan Sairam ◽  
Ashutosh Kumar ◽  
...  
Keyword(s):  
Endurance Exercise ◽  
Structure And Function ◽  
Cardiac Structure ◽  
Middle Aged ◽  
Aged Mice ◽  
Cardiac Structure And Function ◽  
And Function
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