نتایج جستجو برای: نظریة پنج‌عاملی (FFM)

تعداد نتایج: 3730  

ژورنال: :فصلنامه پژوهش های نوین روانشناختی 2011
امیرمحمد شهسوارانی سیدکاظم رسول زاده طباطبایی حسن عشایری کلثوم ستاری

در پژوهش حاضر، هدف تعیین تأثیر استرس بر توجه انتخابی بینایی با در نظر گرفتن نقش عامل شخصیتی روان­رنجورگرایی (n) بود. به این منظور تعداد 60 نفر دانشجوی پسر به صورت نمونه­گیری چندمرحله­ای و با رعایت متغیرهای کنترل غربالگری عصب­روانشناختی از دانشجویان دانشگاه­های شهر تهران انتخاب شدند (دو گروه آزمایشی و یک گروه کنترل؛ هر گروه 20 نفر). آزمودنی­های گروه­های آزمایشی که از نظر افراشتگی در عامل n با هم...

Journal: :journal of nutritional sciences and dietetics 0
kurosh djafarian department of clinical nutrition, school of nutritional sciences and dietetic, tehran university ofmedical sciences, tehran, iran and the division of obesity and metabolic health, rowett institute of nutrition and health, university of aberdeen, bucksburn, aberdeen,scotland, united kingdom and the institute of biological and environmental sciences, university of aberdeen,aberdeen,scotland,united kingdom john r-speakman department of clinical nutrition, school of nutritional sciences and dietetic, tehran university ofmedical sciences, tehran, iran and the division of obesity and metabolic health, rowett institute of nutrition and health, university of aberdeen, bucksburn, aberdeen,scotland, united kingdom joanne stewart department of clinical nutrition, school of nutritional sciences and dietetic, tehran university ofmedical sciences, tehran, iran and the division of obesity and metabolic health, rowett institute of nutrition and health, university of aberdeen, bucksburn, aberdeen,scotland, united kingdom diane m-jackson department of clinical nutrition, school of nutritional sciences and dietetic, tehran university ofmedical sciences, tehran, iran and the division of obesity and metabolic health, rowett institute of nutrition and health, university of aberdeen, bucksburn, aberdeen,scotland, united kingdom

ba ckground: although it is widely accepted that the pre-school age is a critical period  in  the  development of  obesity,  there  are  few  published data  on  factors contributing to variation of total energy expenditure in this age group.to investigate the contribution of body composition, gender and activity on total energy expenditure (tee) in pre-school children. m ethods: the total ener...

Journal: :Clinical Nutrition 2021

SummaryBackground & aims Assessment of Fat Mass (FM) and fat-free mass (FFM) using Air-displacement plethysmography (ADP) technique assumes constant density FFM (DFFM) by age sex. It has been recently shown that DFFM further varies according to body index (BMI), meaning ADP composition assessments children with obesity could be biased if is assumed consta...

Journal: :Journal of applied physiology 2001
E M Evans B M Prior S A Arngrimsson C M Modlesky K J Cureton

Differences in the mineral fraction of the fat-free mass (M(FFM)) and in the density of the FFM (D(FFM)) are often inferred from measures of bone mineral content (BMC) or bone mineral density (BMD). We studied the relation of BMC and BMD to the M(FFM) and D(FFM) in a heterogeneous sample of 216 young men (n = 115) and women (n = 101), which included whites (n = 155) and blacks (n = 61) and coll...

Journal: :American journal of physiology. Endocrinology and metabolism 2002
Steven B Heymsfield Dympna Gallagher Donald P Kotler Zimian Wang David B Allison Stanley Heshka

An enduring enigma is why the ratio of resting energy expenditure (REE) to metabolically active tissue mass, expressed as the REE/fat-free mass (FFM) ratio, is greater in magnitude in subjects with a small FFM than it is in subjects with a large FFM. This study tested the hypothesis that a higher REE/FFM ratio in subjects with a small body mass and FFM can be explained by a larger proportion of...

2016
Corinna Geisler Wiebke Braun Maryam Pourhassan Lisa Schweitzer Claus-Christian Glüer Anja Bosy-Westphal Manfred J. Müller

Age-related changes in organ and tissue masses may add to changes in the relationship between resting energy expenditure (REE) and fat free mass (FFM) in normal and overweight healthy Caucasians. Secondary analysis using cross-sectional data of 714 healthy normal and overweight Caucasian subjects (age 18-83 years) with comprehensive information on FFM, organ and tissue masses (as assessed by ma...

Journal: :American journal of physiology. Endocrinology and metabolism 2007
ZiMian Wang Stanley Heshka Jack Wang Dympna Gallagher Paul Deurenberg Zhao Chen Steven B Heymsfield

The proportion of fat-free mass (FFM) as body cell mass (BCM) is highly related to whole body resting energy expenditure. However, the magnitude of BCM/FFM may have been underestimated in previous studies. This is because Moore's equation [BCM (kg) = 0.00833 x total body potassium (in mmol)], which was used to predict BCM, underestimates BCM by approximately 11%. The aims of the present study w...

Journal: :American journal of physiology. Endocrinology and metabolism 2003
Ingrid Larsson Anna Karin Lindroos Markku Peltonen Lars Sjöström

Total body potassium (TBK) is located mainly intracellularly and constitutes an index of fat-free mass (FFM). The aim was to examine whether TBK and the TBK-to-FFM ratio (TBK/FFM) can be estimated from sex, age, weight, and height. A primary study group (164 males, 205 females) and a validation group (161 and 206), aged 37-61 yr, were randomly selected from the general population. TBK was deter...

Journal: :International journal of adolescent medicine and health 2015
Matthew G Browning Ronald K Evans

Owing to the strong relationship between fat-free mass (FFM) and resting energy expenditure (REE), the preservation of FFM is often emphasized in the treatment of adolescent obesity. Typical treatment regimens including an increased dietary consumption of protein and participation in resistance training are common components of adolescent weight management programs, despite limited evidence of ...

Journal: :JPEN. Journal of parenteral and enteral nutrition 2001
U G Kyle L Genton G Mentha L Nicod D O Slosman C Pichard

BACKGROUND Bioelectrical impedance analysis (BIA) can be valuable in evaluating the fat-free (FFM) and fat masses (FM) in patients, provided that the BIA equation is valid in the subjects studied. The purpose of the clinical evaluation was to evaluate the applicability of a single BIA equation to predict FFM in pre- and posttransplant patients and to compare FFM and FM in transplant patients wi...

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