scholarly journals Associations of disordered sleep with body fat distribution, physical activity and diet among overweight middle-aged men

2015 ◽  
Vol 24 (4) ◽  
pp. 414-424 ◽  
Author(s):  
Xiao Tan ◽  
Markku Alén ◽  
Shu Mei Cheng ◽  
Tuija M. Mikkola ◽  
Jarkko Tenhunen ◽  
...  
1996 ◽  
Vol 4 (3) ◽  
pp. 245-252 ◽  
Author(s):  
Roland Rosmond ◽  
Leif Lapidus ◽  
Per Mårin ◽  
Per Björntorp

1988 ◽  
Vol 43 (5) ◽  
pp. 1028-1035
Author(s):  
Kazushi Okamoto ◽  
Kiyoko Yagyu ◽  
Kazuko Ohno ◽  
Nobuo Okamoto ◽  
Akira Takahashi ◽  
...  

2008 ◽  
Vol 199 (1) ◽  
pp. 61-68 ◽  
Author(s):  
R H Straub ◽  
L B Tankó ◽  
C Christiansen ◽  
P J Larsen ◽  
D S Jessop

The presence of peripheral fat mass (PFM) appears to counteract the atherogenic trends of central fat mass through mechanisms presently poorly understood. In elderly women with distinct forms of body fat distribution, we wanted to study whether physical activity and aortic calcification are related to plasma levels of cortisol, 17-α-hydroxyprogesterone (17-α-OHP), dehydroepiandrosterone (DHEA), androstenedione (ASD), and interleukin 6 (IL6) accomplishing an anti-atherogenic milieu. A total of 276 well-defined generally healthy women aged 60–85 years were included. Categorization of body fat distribution was based on the relative presence of central to PFM measured by dual-energy X-ray absorptiometry. Women meticulously reported weekly physical activity. Outcome measures were aortic calcification between lumbar vertebra L1 and L4, plasma levels of hormones, and IL6. In peripheral adipose women, plasma DHEA and ASD increased with the degree of physical activity. This was also mirrored in the ratios of cortisol/DHEA and cortisol/17-α-OHP. Peripheral adipose women with high DHEA relative to cortisol had less severe aortic calcification, and in the same group a higher level of physical activity was associated with lower levels of plasma IL6. In conclusion, this study demonstrates that high physical activity is associated with a high circulating androgen to cortisol ratio, low IL6, and less severe aortic calcification. Since androgens inhibit IL6 secretion, the activity-induced increase of these hormones might be an anti-atherogenic signal.


Author(s):  
Jaak Jürimäe ◽  
Evelin Lätt ◽  
Jarek Mäestu ◽  
Meeli Saar ◽  
Priit Purge ◽  
...  

AbstractRecently, osteocalcin (OC), an osteoblast-derived hormone, has been found to correlate with adiposity, adipocytokines and insulin resistance in adults, but few studies have investigated this in children. The aim of this study was to investigate these associations in adolescent boys, for whom it is a time of significant bone mineral accrual, taking into account possible confounders related to adipose and bone tissues.Participants were 141 adolescent boys (mean age 13.9±0.7 years), who were divided into tertiles according to OC levels. Across these groups, differences in total body fat mass (FM), body fat distribution, adiponectin, leptin and insulin resistance values were examined with relation to age, pubertal stage, daily energy and calcium intakes, and physical activity.Mean body mass index (BMI), FM, body fat% and leptin differed significantly between subjects in the three OC tertiles after adjustment for age, pubertal stage, energy and calcium intakes, and physical activity. There were no differences in fat free mass (FFM), bone mineral content, energy and calcium intakes, physical activity, adiponectin and insulin resistance values between study groups. For the entire cohort, mean serum OC was 130.2±45.2 ng/mL and was related to body mass, BMI, FM, body fat distribution and leptin. Circulating OC was not associated with FFM, daily energy and calcium intakes, physical activity, adiponectin or insulin resistance (insulin, glucose, homeostasis model assessment-insulin resistance) values.In male adolescents, OC is inversely related to body adiposity and leptin values, even after consideration of several factors that may affect bone and adipose tissues.


2015 ◽  
Vol 15 (1) ◽  
Author(s):  
Liza Bowen ◽  
Amy E Taylor ◽  
Ruth Sullivan ◽  
Shah Ebrahim ◽  
Sanjay Kinra ◽  
...  

PEDIATRICS ◽  
1998 ◽  
Vol 101 (Supplement_2) ◽  
pp. 505-518 ◽  
Author(s):  
Michael I. Goran

This article reviews the current status of various methodologies used in obesity and nutrition research in children, with particular emphasis on identifying priorities for research needs. The focus of the article is 1) to review methodologic aspects involved with measurement of body composition, body-fat distribution, energy expenditure and substrate use, physical activity, and food intake in children; and 2) to present an inventory of research priorities.


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