The influence of energy intake and percentage of body fat on the reproductive performance of nonpregnant mares

1987 ◽  
Vol 28 (5) ◽  
pp. 587-598 ◽  
Author(s):  
J.R. Kubiak ◽  
B.H. Crawford ◽  
E.L. Squires ◽  
R.H. Wrigley ◽  
G.M. Ward
Keyword(s):  
Energy Intake ◽  
Body Fat ◽  
Reproductive Performance ◽  
Percentage Of Body Fat

scholarly journals Inappropriate elevation of serum leptin levels in children with chronic renal failure. European Study Group for Nutritional Treatment of Chronic Renal Failure in Childhood.

1998 ◽  
Vol 9 (6) ◽  
pp. 1074-1079
Author(s):  
M Daschner ◽  
B Tönshoff ◽  
W F Blum ◽  
P Englaro ◽  
A M Wingen ◽  
...  
Keyword(s):  
Renal Failure ◽  
Chronic Renal Failure ◽  
Energy Intake ◽  
Body Fat ◽  
Nutrient Intake ◽  
Degradation Products ◽  
Clinical Problem ◽  
Gel Chromatography ◽  
Serum Leptin ◽  
Percentage Of Body Fat

Decreased spontaneous nutrient intake is a frequent clinical problem in patients with chronic renal failure (CRF). Leptin, the recently characterized gene product of the obese gene, is produced by adipocytes and is thought to act as an afferent satiety signal on the appetite and satiety centers of the brain. Serum leptin levels were investigated in 134 pediatric patients in different stages of CRF to evaluate a possible relationship between leptin, GFR, and spontaneous energy intake. Serum leptin levels, measured by a specific RIA, were elevated above the 50th percentile of the normal range in 78% of CRF patients and above the 95th percentile in 45% of patients. Gel chromatography of CRF sera yielded only one single immunoreactive peak at 16 kD, indicating that the increase of immunoreactive leptin levels in CRF serum was not due to accumulation of leptin degradation products. Multiple stepwise regression analysis revealed the percentage of body fat as assessed from skinfold measurements (r = 0.79, P < 0.0001) and GFR (r = -0.17, P < 0.005) as independent predictors of serum leptin levels, accounting for 66% of total statistical variability. There was an inverse linear correlation between standardized leptin levels (leptin z-score) and the spontaneous energy intake quantified from written dietary diaries (r = -0.36, P < 0.001). These data suggest that the percentage of body fat remains the main determinant of serum leptin in CRF patients, but their levels increase with declining GFR, presumably by reduced renal clearance. Leptin levels in CRF serum that are inappropriately elevated in relation to the percentage of body fat might lead to a dysregulation of the normal peripheral-central leptin feedback loop, thereby contributing to decreased nutrient intake in uremia.

Relationship Between Attitudes and Indicators of Obesity for Midlife Women

2009 ◽  
Vol 36 (6) ◽  
pp. 1082-1094 ◽  
Author(s):  
Noriko Sudo ◽  
Dennis Degeneffe ◽  
Houa Vue ◽  
Emily Merkle ◽  
Jean Kinsey ◽  
...  
Keyword(s):  
Body Mass Index ◽  
Waist Circumference ◽  
Weight Management ◽  
Energy Intake ◽  
Body Fat ◽  
Midlife Women ◽  
Highly Educated ◽  
Management Intervention ◽  
Percentage Of Body Fat ◽  
Weight Management Intervention

This study uses segmentation analyses to identify five distinct subgroups of U.S. midlife women ( n = 200) based on their prevailing attitudes toward food and its preparation and consumption. Mean age of the women is 46 years and they are mostly White (86%), highly educated, and employed. Attitude segments (clusters of women sharing similar attitudes) are a significant predictor of obesity indicators. Mean body mass index and percentage of body fat are lower for the “concerned about nutrition” attitude segment compared with the “guiltridden dieter” and “impulsive eater” attitude segments. Mean waist circumference is highest in “impulsive eater” compared with the “concerned about nutrition” segment. Those in the “busy cooking avoider” segment have a significantly higher energy intake compared with women in other attitude segments. Tailoring a weight management intervention according to attitude segments of midlife women may enhance effectiveness.

scholarly journals Genotype × nutrient association of common polymorphisms in obesity-related genes with food preferences and time structure of energy intake

2009 ◽  
Vol 103 (3) ◽  
pp. 352-359 ◽  
Author(s):  
Julie Bienertová-Vašků ◽  
Petr Bienert ◽  
Martin Forejt ◽  
Josef Tomandl ◽  
Zuzana Brázdová ◽  
...  
Keyword(s):  
Blood Pressure ◽  
Diastolic Blood Pressure ◽  
Energy Intake ◽  
Body Fat ◽  
Plasma Levels ◽  
Independent Predictor ◽  
Food Preferences ◽  
Time Structure ◽  
Allelic Variants ◽  
Percentage Of Body Fat

Personal food preferences can either enhance or suppress the development of obesity and the selection and proportion of macronutrients in the diet seem to have a heritable component. In the present study, we therefore focused on dietary composition as a specific trait related to obesity and we determined whether genetic variations in leptin (LEP), LEP receptor (LEPR), adiponectin (ADIPOQ), IL-6 and pro-opiomelanocortin (POMC) underlie specific native food preferences and obesity-related anthropometric parameters. The total of 409 individuals of Czech Caucasian origin were enrolled into the present study and 7 d food records were obtained from the study subjects along with selected anthropometric measurements. In a subset of study subjects, plasma levels of ADIPOQ, LEP and soluble LEPR were measured. Independently of the BMI of the individuals, common variations in LEP and LEPR genes were associated with specific eating patterns, mainly with respect to timing of eating. The LEP+19A/G polymorphism served as an independent predictor for BMI, percentage of body fat and skinfold thickness and significantly affected the time structure of the daily energy intake. The POMC RsaI polymorphism was associated with percentage of body fat. The ADIPOQ 45 T/G polymorphism was associated with the thickness of the subscapular skinfold. The LEPR Gln223Arg polymorphism was associated with multiple parameters, including diastolic blood pressure, meal sizes during the day and plasma ADIPOQ levels. In a separate analysis, soluble leptin receptor (sObR) plasma levels and LEP:sObR ratio were significantly correlated with systolic blood pressure (β = − 0·66, P = 0·002; β = − 1·23, P = 0·02) and sObR plasma levels also served as an independent predictor for diastolic blood pressure (β = − 0·50; P = 0·04). To conclude, we report common allelic variants associated with specific feeding behaviour and obesity-related anthropometric traits. Moreover, we identified allelic variants that significantly influence the time structure of food intake during the day.

scholarly journals Hydration status, body composition, and anxiety status in aeronautical military personnel from Spain: a cross-sectional study

2021 ◽  
Vol 8 (1) ◽  
Author(s):  
Alejandra Carretero-Krug ◽  
Natalia Úbeda ◽  
Carlos Velasco ◽  
Juan Medina-Font ◽  
Trinidad Trujillo Laguna ◽  
...  
Keyword(s):  
Body Composition ◽  
Water Balance ◽  
Body Fat ◽  
Water Intake ◽  
Military Personnel ◽  
Hydration Status ◽  
Total Water ◽  
Percentage Of Body Fat ◽  
Urine Color ◽  
Total Water Intake

Abstract Background An adequate hydration status is critical to ensure efficiency during mental and physical activities. Our goal was to assess the hydration status of a Spanish group of aeronautical military men and to determine the association of hydration status with body composition and anxiety. Methods A total of 188 men were evaluated through a validated hydration questionnaire, anthropometric and biochemical parameters, and an anxiety questionnaire. Based on these methods, the criteria of hydration were established. Results Of the total sample, 81% met the hydration criteria (urine color = well hydrated, water balance ≥ 0 ml, and total water intake/weight ≥ 35 ml/kg), and 19% did not meet the hydration criteria (urine color = not sufficiently hydrated or dehydrated, water balance < 0 ml, and total water intake/weight < 35 ml/kg). Subjects not meeting the hydration criteria had lower urine pH, negative water balance, and lower water intake. The latter also had higher anxiety status (score = 4 vs. 3, P = 0.026), weight [(84.7 ± 10.5) vs. (80.5 ± 10.2) kg], body mass index [(26.3 ± 3.1) vs. (25.2 ± 2.8)]kg/m2, body fat [(22.3 ± 5.6) vs. (18.3 ± 6.5)] %, urine specific gravity, and urine color. Using a logistic binary regression model, hydration status was related significantly with the percentage of body fat (P = 0.004), but no relation was found with age, comorbidities, or medications. Furthermore, total water intake/weight was positively correlated with percentage of body water (r = 0.357, P = 0.000) and negatively with body fat (kg) (r = − 0.427, P = 0.000), percentage of body fat (r = − 0.405, P = 0.000), and waist/hip ratio (r = − 0.223, P = 0.002). Based on a linear regression model, total water intake/weight was related significantly with percentage of body fat (P = 0.001) and percentage of body water content (P = 0.035). No relation was found, however, with waist/hip ratio, age, comorbidities, or medications. Conclusions These findings all suggest a relationship between hydration status and body composition but also set the bases for future studies that relate hydration status and anxiety status. These results can be used to improve the hydration status and body composition of military personnel.

scholarly journals Symptoms of stress and depression effect percentage of body fat and insulin resistance in healthy youth: LOOK longitudinal study.

2017 ◽  
Vol 36 (8) ◽  
pp. 749-759 ◽  
Author(s):  
Lisa S. Olive ◽  
Rohan M. Telford ◽  
D. G. Byrne ◽  
Walter P. Abhayaratna ◽  
Richard D. Telford
Keyword(s):  
Insulin Resistance ◽  
Longitudinal Study ◽  
Body Fat ◽  
Depression Effect ◽  
Percentage Of Body Fat

scholarly journals Physical Performance and Anthropometric Characteristics of Male South African University Soccer Players

2017 ◽  
Vol 60 (1) ◽  
pp. 153-158 ◽  
Author(s):  
Alliance Kubayi ◽  
Yvonne Paul ◽  
Prescott Mahlangu ◽  
Abel Toriola
Keyword(s):  
South African ◽  
Body Fat ◽  
Body Height ◽  
Soccer Players ◽  
Successful Performance ◽  
Physiological Profile ◽  
Percentage Of Body Fat ◽  
Body Fat Content ◽  
Anthropometric Characteristics ◽  
Better Than

Abstract Soccer is the most popular sport worldwide. Despite its global acclaim, scientific studies of soccer have tended to focus on tactics and techniques, thereby neglecting the physical and physiological profile of the players. Therefore, the purpose of this study was to examine physical and anthropometric characteristics of male South African university soccer players. Twenty-seven male soccer players aged 19 to 24 (mean age: 22.1 years; s = 1.5 years) volunteered to participate in the study. The results showed that goalkeepers (77.5 ± 9.7 kg) and defenders (68.2 ± 6.5 kg) were the heaviest compared to players in other playing positions. The goalkeepers also had the highest percentage of body fat (11.3 ± 2.3%), in contrast to midfielders who had the lowest body fat content (9.1 ± 0.9%). With regard to flexibility, defenders (45.1 ± 4.9 cm) and midfielders (45.9 ± 5.4 cm) performed better than goalkeepers (37.1 ± 4.3 cm) and strikers (40.1 ± 3.4 cm). Midfielders (57.2 ± 3.1 ml1·kg−1·min1) and defenders (56.1 ± 5.1 ml1·kg−1·min1) had significantly higher values of maximal oxygen uptake (VO2max) than goalkeepers (47.9 ± 0.2 ml−1·kg−1·min−1) and strikers (49.8 ± 6.2 ml−1·kg−1·min−1). No significant (p > 0.05) differences were observed for all other variables, with the exception of body height, body mass, and VO2max. It was therefore concluded that sports scientists and coaches should tailor conditioning programmes in soccer according to players’ positions in view of the implications for successful performance.

Sign in / Sign up

Export Citation Format

Share Document