scholarly journals Thermic effect of a meal

1992 ◽  
Vol 67 (2) ◽  
pp. 177-185 ◽  
Author(s):  
L. S. Piers ◽  
M. J. Soares ◽  
P. S. Shetty
Keyword(s):  
Human Subjects ◽  
Normal Weight ◽  
Fat Free Mass ◽  
Analysis Of Covariance ◽  
Energy Output ◽  
Control Group ◽  
Liquid Meal ◽  
Oxidation Rates ◽  
Chronic Undernutrition ◽  
Thermic Effect

The thermic effect of a standard liquid meal (TEM; energy 2.5 MJ; containing (g/kg) protein 100, fat 150, carbohydrate 750; volume 350 ml) was measured in a chronically undernourished (UN; n 9) group of human subjects and was compared with results from two control groups, one normal weight (NW)-for-height (BMI > 20; n 10) and the other underweight (UW)-for-height (BMI < 18, n 10), using a ventilated-hood system over a period of 6 h after ingestion of the meal. Results indicated that the UN subjects had lower values for body-weight, height, percentage fat and fat-free mass (FFM) compared with those of either control group. Basal metabolic rates were lowest in the UN group in absolute terms; however, there were no significant differences among groups on an analysis of covariance (ANACOVA) with FFM as the covariate. TEM responses in the UN group were significantly higher when expressed either in absolute terms or as a percentage of the energy density of the meal. The post-meal total energy output was significantly lower (P < 0.05) in the UW and UN groups as compared with the NW group in absolute terms; however, on adjusting for differences in FFM (by ANACOVA) there were no significant differences among groups. This would suggest that in the chronically undernourished thermogenic responses to a meal are unlikely to contribute towards any energy saving and may not constitute a part of any adaptive response to the undernourished state.Chronic undernutrition: Thermic effect: Substrate oxidation rates: Body composition

scholarly journals Thermic effect of a meal

1992 ◽  
Vol 67 (2) ◽  
pp. 187-194 ◽  
Author(s):  
L. S. Piers ◽  
M. J. Soares ◽  
R. N. Kulkarni ◽  
P. S. Shetty
Keyword(s):  
Dietary Supplementation ◽  
Substrate Oxidation ◽  
Fat Free Mass ◽  
Energy Output ◽  
Metabolic Rates ◽  
Oxidation Rates ◽  
Before And After ◽  
Chronic Undernutrition ◽  
Thermic Effect ◽  
Apparently Healthy

Five apparently healthy, chronically undernourished (UN) male volunteers aged between 18 and 30 years were studied before and after 12 weeks of dietary supplementation. The thermic effect of a meal (TEM) was measured over a period of 6 h using a ventilated-hood system. Results indicated a significant increase in body-weight after supplementation due to increases in body fat and fat-free mass (FFM) in the proportion of 69% and 31% respectively. The basal metabolic rates (BMR) measured post supplementation were significantly higher in absolute terms, with a trend towards higher values when adjusted for the changes in FFM. TEM responses measured after 12 weeks of supplementation were significantly lower when expressed either in absolute terms (presupplementation 227.0 kJ v. post supplementation 193.5 kJ), or as a percentage of the energy density of the meal (9.1% v. 7.7%). This lower TEM was reciprocal to the changes in the BMR (r −0.86). The post-meal total energy output (PMTEO) was, however, not significantly different after 12 weeks of dietary supplementation. The unchanged PMTEO would indicate an unaltered ‘thermogenic capacity’, following supplementation, in these chronically undernourished subjects. These results confirm our earlier conclusion that, in chronic undernutrition, the thermic response to a meal may not contribute to any energy saving.Chronic undernutrition: Dietary supplementation: Basal metabolic rates: Thermic effect: Substrate oxidation rates

scholarly journals Differences in energy metabolism between normal weight ‘large-eating’ and ‘small-eating’ women

1992 ◽  
Vol 68 (1) ◽  
pp. 31-44 ◽  
Author(s):  
Dalas Clark ◽  
Frank Tomas ◽  
Robert T. Withers ◽  
M. Brinkman ◽  
Colin Chandler ◽  
...  
Keyword(s):  
Energy Expenditure ◽  
Carbon Dioxide Production ◽  
Normal Weight ◽  
Physical Activities ◽  
Weight Basis ◽  
Fat Free Mass ◽  
Oral Temperature ◽  
Liquid Meal ◽  
Rate Of Oxygen Consumption ◽  
Thermic Effect

Nine ‘large-eating’ (approximately 12 MJ/d) and nine ‘small-eating’ (approximately 5.3 MJ/d) women were selected from the population on the basis of diet and activity diaries. At rest and in the post-absorptive state the rate of oxygen consumption (Vo2)/kg fat-free mass (FFM) and rate of carbon dioxide production (Vco2)/kg FFM were 9–17% higher (P < 0.05) in the ‘large-eaters’ than in the ‘small-eaters’. As energy expenditure was increased by walking at 2.4, 3.9 and 5.4 km/h the differences between the two experimental groups for both Vo2/kg FFM and Vco2/kg FFM were decreased to negligible values, but energy expended on a body-weight basis (MJ/kg per min) remained significantly higher (5–10%) in ‘large-eaters’. Oral temperature was also consistently higher (up to 0.5°) in this group both at rest and during sitting, standing and walking activities. Although the average thermic effect of a standardized liquid meal tended to be higher (27%; not significant) in the ‘small-eaters’, the other results demonstrate that the ‘large-eating’ females had a markedly higher rate of energy expenditure at rest and during light physical activities.

Whole Body Protein Turnover in Chronically Undernourished Individuals

1994 ◽  
Vol 86 (4) ◽  
pp. 441-446 ◽  
Author(s):  
M. J. Soares ◽  
L. S. Piers ◽  
P. S. Shetty ◽  
A. A. Jackson ◽  
J. C. Waterlow
Keyword(s):  
Body Weight ◽  
Protein Synthesis ◽  
Metabolic Rate ◽  
Muscle Mass ◽  
Basal Metabolic Rate ◽  
Normal Weight ◽  
Fat Free Mass ◽  
Whole Body ◽  
Body Protein ◽  
Chronic Undernutrition

1. Two groups of adult men were studied in Bangalore, India, under identical conditions: the ‘normal weight’ subjects (mean body mass index 20.8 kg/m2) were medical students of the institute with access to habitual energy and protein intakes ad libitum. The other group, designated ‘undernourished’, were labourers on daily wages (mean body mass index 16.7 kg/m2). 2. In an earlier study we obtained lower absolute values for both basal metabolic rate and protein synthesis in the undernourished subjects; however, when the data were expressed on a body weight or fat-free mass basis, a trend towards higher rates of protein synthesis, as well as higher basal metabolic rate, was evident. The suggestion was made that such results reflected the relatively higher energy intakes per kg body weight of the undernourished subjects on the day of study. The objective of the present study was therefore to control for the dietary intake during the measurement of whole body protein turnover. 3. In the present study dietary intakes were equated on a body weight basis; however, expressed per kg fat-free mass, the normal weight subjects had received marginally higher intakes of energy and protein. The results, however, were similar to those of the previous study. In absolute terms, basal metabolic rate, protein synthesis and breakdown were lower in the undernourished subjects. When expressed per kg body weight or per kg fat-free mass, the undernourished subjects had higher basal metabolic rates than the well-nourished subjects, whereas no differences were seen in the rate of protein synthesis or breakdown. 4. Estimates of muscle mass, based on creatinine excretion, indicated that the undernourished subjects had a higher proportion of non-muscle to muscle mass. Nitrogen flux (Q) was determined from 15N abundance in two end products, urea (Qu) and ammonia (Qa). The ratio Qu/Qa was increased in the undernourished subjects and was significantly correlated with the ratio of non-muscle to muscle mass (r = 0.81; P < 0.005). These results fit in with our earlier suggestion of a greater proportion of non-muscle (visceral) mass in undernourished subjects. 5. The present data suggest that there are no changes in the rate of protein synthesis or breakdown in chronic undernutrition when results are expressed, conventionally, per kg fat-free mass. It can be theoretically shown, however, that there could be a 15% reduction in the rate of turnover of the visceral tissues in chronic undernutrition. This, together with the reduced urinary nitrogen excretion, would contribute to nitrogen economy in these individuals.

The effect of puberty on fat oxidation rates during exercise in overweight and normal-weight girls

2014 ◽  
Vol 116 (1) ◽  
pp. 76-82 ◽  
Author(s):  
L. Chu ◽  
M. C. Riddell ◽  
J. E. Schneiderman ◽  
B. W. McCrindle ◽  
J. K. Hamilton
Keyword(s):  
Tanner Stage ◽  
Fat Oxidation ◽  
Tolerance Test ◽  
Cycle Ergometer ◽  
Normal Weight ◽  
Fat Free Mass ◽  
Oral Glucose ◽  
Model Assessment ◽  
Early Puberty ◽  
Oxidation Rates

Excess weight is often associated with insulin resistance (IR) and may disrupt fat oxidation during exercise. This effect is further modified by puberty. While studies have shown that maximal fat oxidation rates (FOR) during exercise decrease with puberty in normal-weight (NW) and overweight (OW) boys, the effect of puberty in NW and OW girls is unclear. Thirty-three NW and OW girls ages 8–18 yr old completed a peak aerobic capacity test on a cycle ergometer. FOR were calculated during progressive submaximal exercise. Body composition and Tanner stage were determined. For each participant, a best-fit polynomial curve was constructed using fat oxidation vs. exercise intensity to estimate max FOR. In a subset of the girls, IR derived from an oral glucose tolerance test ( n = 20), and leptin and adiponectin levels ( n = 11) were assessed in relation to FOR. NW pre-early pubertal girls had higher max FOR [6.9 ± 1.4 mg·kg fat free mass (FFM)−1·min−1] than NW mid-late pubertal girls (2.2 ± 0.9 mg·kg FFM−1·min−1) ( P = 0.002), OW pre-early pubertal girls (3.8 ± 2.1 mg·kg FFM−1·min−1), and OW mid-late pubertal girls (3.3 ± 0.9 mg·kg FFM−1·min−1) ( P < 0.05). Bivariable analyses showed positive associations between FOR with homeostatic model assessment of IR ( P = 0.001), leptin ( P < 0.001), and leptin-to-adiponectin ratio ( P = 0.001), independent of percent body fat. Max FOR decreased in NW girls during mid-late puberty; however, this decrease associated with puberty was blunted in OW girls due to lower FOR in pre-early puberty. The presence of IR due to obesity potentially masks the effect of puberty on FOR during exercise in girls.

scholarly journals No major differences in energy metabolism between matched and unmatched groups of ‘large-eating’ and ‘small-eating’ men

1993 ◽  
Vol 70 (2) ◽  
pp. 393-406 ◽  
Author(s):  
Dallas Clark ◽  
Frank Tomas ◽  
Robert T. Withers ◽  
Sally D. Neville ◽  
Stephen R. Nolan ◽  
...  
Keyword(s):  
Energy Expenditure ◽  
Resting Metabolic Rate ◽  
Normal Weight ◽  
Fat Free Mass ◽  
Daily Activities ◽  
Energy Requirements ◽  
Energy Expenditures ◽  
Thermic Effect Of Food ◽  
Effect Of Food ◽  
Thermic Effect

Rates of energy expenditure (J/kg fat-free mass (FFM) per min) in normal weight, ‘small-eating’ men were compared with those obtained for normal weight (n 8) and underweight (n 5) ‘large-eating’ men. For the matched groups of ‘large-’ and ‘small-eaters’ there were no differences in resting metabolic rate (RMR) measurements but during controlled daily activities there was a small but significant increase (P < 0.05) in energy expenditure in the ‘large-eaters’. These results contrast with those obtained for the unmatched groups where energy requirements were about 10 % (P < 0.01) higher in the underweight ‘large-eaters’ at rest but were not different during the more energetic (walking) activities. However, after adjustment for differences in FFM between these two groups, the resting energy expenditures of the ‘large-eaters’ (82·54 (SE 1·51) J/kg FFM per min) were similar to those of the ‘small-eaters’ (81·87 (SE 1·51) J/kg FFM per min). Oral temperatures were significantly higher in the matched (0·35–0·65°) and unmatched (0·7–0·9°) ‘large-eaters’ both at rest and during the different activities, but the thermic effect of food (50 kJ/kg FFM) was one fifth lower (not significant) in both groups of ‘large-eaters’. These results provide little evidence for any major metabolic differences between groups of ‘large-eating’ and ‘small-eating’ men.

scholarly journals Clinical Assessment of Nutritional and Metabolic Status in HIV Outpatients

2020 ◽  
Vol 14 (1) ◽  
pp. 11-15
Author(s):  
Karl Emerole ◽  
Galina Kozhevnikova ◽  
Vasily Isakov ◽  
Sergey Voznesenskiy ◽  
Vladislav Konnov ◽  
...  
Keyword(s):  
Nitrogen Concentration ◽  
Bioelectrical Impedance ◽  
Population Group ◽  
Fat Free Mass ◽  
Metabolic Status ◽  
World Health ◽  
Control Group ◽  
People Living With Hiv ◽  
Oxidation Rates ◽  
Living With Hiv

Background: After the World Health Organization’s first technical consultation on Nutrient Requirements for People Living with HIV/AIDS in Geneva, 2003, a lot of research questions that are considered crucial for enhancing our understanding of the interaction of nutrition and HIV infection were raised and until this moment, left unanswered. To gain a better understanding of HIV and nutrition, we implemented a comprehensive approach. The aim of our study was to assess the nutritional and metabolic status in order to enhance the provision of medical care to people living with HIV. Methods: 45 HIV patients and 32 healthy volunteers were enrolled in the study. Within the HIV group, 32 (71%) were male and 13 (29%) female. Only 7 (15%) were ART naïve. Overall their median age, CD4 count and viral load were 30 years (IQR: 28-40), 407 (IQR: 357-490) cells/mm3 and 500 (IQR: 0-1000) copies/ml, respectively. None of the participants in the HIV group had any active infection. Food intake by monthly dietary recall was determined. Body composition was measured using bioelectrical impedance analysis. The selected biochemical parameters were evaluated and the resting metabolic rates were calculated using indirect calorimetry to accurately understand the metabolism of participants. Results: Participants in the HIV group did not meet the recommended daily allowance level (RDA) of carbohydrate requirements. The fat-free mass significantly decreased in the HIV group (P < 0.05). Resting energy expenditure was excessive in the HIV group compared to the control group (P < 0.05). Values of urea nitrogen concentration, fat and protein oxidation rates in the HIV group significantly increased (P < 0.01). The carbohydrate oxidation in the HIV group significantly decreased (P < 0.01) Conclusions: The study reveals a catabolic status in the HIV group and suggests an adjustment in the nutrient RDA to compensate such status. Further investigation should be extended to vulnerable population group particularly children.

Effects of a 6-Week Straw Phonation in Water Exercise Program on the Aging Voice

2020 ◽  
Vol 63 (4) ◽  
pp. 1018-1032
Author(s):  
Chia-Hsin Wu ◽  
Roger W. Chan
Keyword(s):  
Acoustic Analysis ◽  
Vocal Tract ◽  
Exercise Program ◽  
Analysis Of Covariance ◽  
Elderly Subjects ◽  
Control Group ◽  
Perceptual Evaluation ◽  
Positive Effects ◽  
Aging Voice ◽  
Before And After

Purpose Semi-occluded vocal tract (SOVT) exercises with tubes or straws have been widely used for a variety of voice disorders. Yet, the effects of longer periods of SOVT exercises (lasting for weeks) on the aging voice are not well understood. This study investigated the effects of a 6-week straw phonation in water (SPW) exercise program. Method Thirty-seven elderly subjects with self-perceived voice problems were assigned into two groups: (a) SPW exercises with six weekly sessions and home practice (experimental group) and (b) vocal hygiene education (control group). Before and after intervention (2 weeks after the completion of the exercise program), acoustic analysis, auditory–perceptual evaluation, and self-assessment of vocal impairment were conducted. Results Analysis of covariance revealed significant differences between the two groups in smoothed cepstral peak prominence measures, harmonics-to-noise ratio, the auditory–perceptual parameter of breathiness, and Voice Handicap Index-10 scores postintervention. No significant differences between the two groups were found for other measures. Conclusions Our results supported the positive effects of SOVT exercises for the aging voice, with a 6-week SPW exercise program being a clinical option. Future studies should involve long-term follow-up and additional outcome measures to better understand the efficacy of SOVT exercises, particularly SPW exercises, for the aging voice.

The effectiveness of positive training on happiness, aggression and hope in adolescents with leukemia in Ahvaz

2018 ◽  
Vol 9 (01) ◽  
Author(s):  
Marzieh . Shamkhani ◽  
Ali . Khalafi
Keyword(s):  
Sampling Method ◽  
Analysis Of Covariance ◽  
Control Group ◽  
Positive Attitudes ◽  
Measurement Tools ◽  
Post Test ◽  
Aggression Questionnaire ◽  
Experimental Group ◽  
Period Measurement

The purpose of this study was to determine the effectiveness of positive learning on happiness, Aggression and hope for adolescents with leukemia in Ahvaz. The sample consisted of 30 people who were selected by available sampling method. 15 subjects in the experimental group and 15 in the control group were randomly assigned. The experimental design was a pre-test-post-test type with control group and follow-up period. Measurement tools included Oxford Happiness Inventory (Argyle, 1989); Ahwaz's Aggression Questionnaire (Zahedifar, Najarian, and Shokrkon, 2000); Hope Scale (Schneider, 1991). To run, at first, the pre-test was taken from both groups. Then, the experimental group was trained in 14 sessions of 90 minutes, and after each group, they were subjected to post-test. And one month later, the follow-up process was completed. Data analysis was performed using multivariate covariance analysis (MANCOVA) and one-way analysis of covariance (ANCOVA). The results showed that positive attitudes toward happiness, aggressiveness and hopefulness of adolescents with leukemia in Ahvaz were effective.

PENGARUH PEMBELAJARAN INOVATIF TERHADAP HASIL BELAJAR BAHASA INGGRIS SISWA KELAS VIIIB1 SMP NEGERI 2 GEROKGAK DENGAN PENGENDALIAN KECERDASAN LINGUISTIK

2019 ◽  
Vol 1 (1) ◽  
pp. 108-114
Author(s):  
I Made Wirta
Keyword(s):  
Sampling Technique ◽  
Analysis Of Covariance ◽  
Control Group ◽  
Learning Approaches ◽  
Control Group Design ◽  
Post Test ◽  
Quasi Experimental ◽  
Innovative Learning ◽  
Inferential Analysis ◽  
English Students

The main objective of the present study is to investigate the effect of implementing innovative learning approaches upon English students’ achievement. The study was quasi experimental study using the post-test only control group design involving 35 students altogether selected using census sampling technique. The instrument which is used to gather data in the study was test. There were two tests used to gather intended data. They were linguistic test and student achievement test. The obtained data were analyzed statistically using descriptive and inferential analysis. The analysis of covariance was conducted to test the hypotheses.

Research on the methods and means of action strength training in aerobics training

2021 ◽  
pp. 002072092110042
Author(s):  
Xiaona Yang ◽  
Yang Ji ◽  
Da Ke ◽  
Fang Li
Keyword(s):  
Strength Training ◽  
Team Member ◽  
High Efficiency ◽  
Colleges And Universities ◽  
The Body ◽  
Energy Output ◽  
Control Group ◽  
Experimental Sample ◽  
Training Method ◽  
Core Strength

Aerobics is a beautiful and rhythmic sport. In recent years, aerobics has developed rapidly, and has become one of the essential courses of physical education in Colleges and universities. But the existing aerobics courses in Colleges and universities are less involved in the training process of action strength. Lack of strength quality is a common shortcoming of Aerobics Athletes in Colleges and universities. Therefore, this paper puts forward the methods and means of action strength training in aerobics training. According to the characteristics of competitive aerobics, combined with the traditional training strategy of action strength, this paper formulates the method of action strength training suitable for College Aerobics athletes. In order to further verify the effectiveness of this method, this paper takes a university aerobics team as an experimental sample to carry out a comparative analysis of the effect of action strength training. Relevant studies have proved that core strength training has the following effects on aerobics players: 1. Helps the calisthenics team member stabilize the trunk, improve the body's control ability and balance ability. 2. It is conducive to completing difficult movements of calisthenics with high efficiency and low energy consumption. 3. Helps the aerobics team member to enhance the special strength. 4. It can effectively prevent sports injuries. 5. It can improve the direction change and displacement speed of the body. 6. It can improve the energy output of the core strength to the limbs and other muscle groups during movement, so that the movement can be completed more perfectly.According to the results of the experiment, the explosive force and endurance of the experimental group after 8 weeks of training have been significantly improved, and formed a more obvious difference with the control group. The aerobics training method developed in this paper can be divided into two stages: the initial stage and the middle stage, which can better meet the students with different physical qualities. At the end of this paper, a fast strength training method is introduced, and the characteristics of different training methods are analyzed.

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