scholarly journals Exercise, Training, and the Hypothalamic-Pituitary-Gonadal Axis in Men and Women

Author(s):  
Natalia Cano Sokoloff ◽  
Madhusmita Misra ◽  
Kathryn E. Ackerman
1991 ◽  
Vol 67 (7) ◽  
pp. 633-639 ◽  
Author(s):  
James A. Blumenthal ◽  
Charles F. Emery ◽  
David J. Madden ◽  
R.Edward Coleman ◽  
Margaret W. Riddle ◽  
...  

1980 ◽  
Vol 21 (Supplement) ◽  
pp. S45
Author(s):  
W. C. Hersey ◽  
J. Hagberg ◽  
J. Graves ◽  
R. Ginerich ◽  
M. L. Pollock

2005 ◽  
Vol 37 (Supplement) ◽  
pp. S96
Author(s):  
Justin W. Johnson ◽  
Tongjian You ◽  
Stephen Messier ◽  
Gary Miller ◽  
Barbara Nicklas

1987 ◽  
Vol 7 (4) ◽  
pp. 175
Author(s):  
King AC ◽  
Bohn A ◽  
Evans AJ ◽  
Taylor CB ◽  
Haskell WL ◽  
...  

2002 ◽  
Vol 92 (6) ◽  
pp. 2368-2374 ◽  
Author(s):  
Annette N. Senitko ◽  
Nisha Charkoudian ◽  
John R. Halliwill

In sedentary individuals, postexercise hypotension after a single bout of aerobic exercise is due to a peripheral vasodilation. Endurance exercise training has the potential to modify this response and perhaps reduce the degree of postexercise hypotension. We tested the hypothesis that endurance exercise-trained men and women would have blunted postexercise hypotension compared with sedentary subjects but that the mechanism of hypotension would be similar (i.e., vasodilation). We studied 16 endurance-trained and 16 sedentary men and women. Arterial pressure, cardiac output, and total peripheral resistance were determined before and after a single 60-min bout of exercise at 60% peak oxygen consumption. All groups exhibited a similar degree of postexercise hypotension (∼4–5 mmHg; P < 0.05 vs. preexercise). In sedentary men and women, hypotension was the result of vasodilation (Δresistance: −8.9 ± 2.2%). In endurance-trained women, hypotension was also the result of vasodilation (−8.1 ± 4.1%). However, in endurance-trained men, hypotension was the result of a reduced cardiac output (−5.2 ± 2.4%; P < 0.05 vs. all others) and vasodilation was absent (−0.7 ± 3.3%; P < 0.05 vs. all others). Thus we conclude the magnitude of postexercise hypotension is similar in sedentary and endurance-trained men and women but that endurance-trained men and women achieve this fall in pressure via different mechanisms.


2006 ◽  
Vol 100 (5) ◽  
pp. 1584-1589 ◽  
Author(s):  
Valerie B. O’Leary ◽  
Christine M. Marchetti ◽  
Raj K. Krishnan ◽  
Bradley P. Stetzer ◽  
Frank Gonzalez ◽  
...  

Exercise improves glucose metabolism and delays the onset and/or reverses insulin resistance in the elderly by an unknown mechanism. In the present study, we examined the effects of exercise training on glucose metabolism, abdominal adiposity, and adipocytokines in obese elderly. Sixteen obese men and women (age = 63 ± 1 yr, body mass index = 33.2 ± 1.4 kg/m2) participated in a 12-wk supervised exercise program (5 days/wk, 60 min/day, treadmill/cycle ergometry at 85% of heart rate maximum). Visceral fat (VF), subcutaneous fat, and total abdominal fat were measured by computed tomography. Fat mass and fat-free mass were assessed by hydrostatic weighing. An oral glucose tolerance test was used to determine changes in insulin resistance. Exercise training increased maximal oxygen consumption (21.3 ± 0.8 vs. 24.3 ± 1.0 ml·kg−1·min−1, P < 0.0001), decreased body weight ( P < 0.0001) and fat mass ( P < 0.001), while fat-free mass was not altered ( P > 0.05). VF (176 ± 20 vs. 136 ± 17 cm2, P < 0.0001), subcutaneous fat (351 ± 34 vs. 305 ± 28 cm2, P < 0.03), and total abdominal fat (525 ± 40 vs. 443 ± 34 cm2, P < 0.003) were reduced through training. Circulating leptin was lower ( P < 0.003) after training, but total adiponectin and tumor necrosis factor-α remained unchanged. Insulin resistance was reversed by exercise (40.1 ± 7.7 vs. 27.6 ± 5.6 units, P < 0.01) and correlated with changes in VF ( r = 0.66, P < 0.01) and maximal oxygen consumption ( r = −0.48, P < 0.05) but not adipocytokines. VF loss after aerobic exercise training improves glucose metabolism and is associated with the reversal of insulin resistance in older obese men and women.


Cosmetics ◽  
2020 ◽  
Vol 7 (1) ◽  
pp. 18 ◽  
Author(s):  
Vickie Wong ◽  
Takashi Abe ◽  
Robert W. Spitz ◽  
Zachary W. Bell ◽  
Yujiro Yamada ◽  
...  

Lip muscle strength has been shown to influence daily functional activities such as facial expression, speech production, and eating. In this review, recent literature regarding lip strength and exercise training responses are summarized, highlighting the influence of sex, age, and disease (e.g., stroke). A search using five electronic databases was conducted. Twelve studies were identified from the search, which included five studies using healthy adults and seven studies using patients with diseases or chronic ailments. Regardless of the population, lip strength training multiple times a day for a relatively short term (<24 weeks) has resulted in improvements of lip muscle strength. This change in lip strength has been observed in both young and old participants. Although changes in strength have been observed in both men and women, we are unaware of any studies that have tested whether there are sex differences in this response. The same directional change can be expected for patients with stroke and patients with lip incompetence, but the magnitude of the training effect seems to be higher in healthy people.


1993 ◽  
Vol 25 (Supplement) ◽  
pp. S75 ◽  
Author(s):  
L. G. Matson ◽  
Z. V. Tran ◽  
A. Weltman

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