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Reporting Results After Bariatric Surgery: Reproducibility of Predicted Body Mass Index

Salgado Junior, Wilson; Campos, Camila Scalassara; Nonino, Carla Barbosa
Fonte: SPRINGER; NEW YORK Publicador: SPRINGER; NEW YORK
Tipo: Artigo de Revista Científica
ENG
Relevância na Pesquisa
65.65%
There is a controversy about the best way to report results after bariatric surgery. Several indices have been proposed over the years such as percentage of total weight loss (%TWL), percentage of excess weight loss (%EWL), and percentage of excess body mass index loss (%EBMIL). More recently, it has been suggested to individualize the body mass index (BMI) goal to be achieved by the patients (predicted BMI-PBMI). The objective was to assess the reproducibility of this PBMI in our service. In this retrospective study, we assessed the %TWL, %EWL, %EBMIL (with expected BMI of 25 kg/m(2)), and %EBMIL (with PBMI) over 4 years of observation in two groups of patients: BMI < 50 kg/m(2) and BMI a parts per thousand yen50 kg/m(2). The medical records of 403 patients were studied. From 18 to 42 months after surgery, %TWL was higher in the superobese group, whereas %EWL was similar for the two groups. %EBMIL was higher in less obese patients up to 24 months and similar thereafter. In contrast, %EBMIL with PBMI was greater in the superobese group, although it never reached the 100% goal. We conclude that %EBMIL results according to PBMI were not reproducible in our institution. There is a need to elaborate a new easy-to-obtain and reproducible index.

Performance of references based on body mass index for detecting excess body fatness in schoolchildren aged 7 to10 years

Leal,Danielle Biazzi; Assis,Maria Alice Altenburg de; Conde,Wolney Lisboa; Bellisle,France
Fonte: Associação Brasileira de Saúde Coletiva Publicador: Associação Brasileira de Saúde Coletiva
Tipo: Artigo de Revista Científica Formato: text/html
Publicado em 01/06/2014 EN
Relevância na Pesquisa
75.57%
Objective: To compare the sensitivity and specificity of body mass index (BMI)-based classification systems and to determine the optimal cut-offs for predicting excess body fatness in schoolchildren. Methods: 2795 schoolchildren aged 7 - 10 years were examined. Excess body fatness was defined as the standardized residuals of the sum of three skinfold thickness ranking at or above the 90th percentile. The international BMI-based system recommended by the World Health Organization (WHO-2007) was evaluated on the basis of its sensitivity and specificity for detecting excess body fatness and compared with a national BMI reference (Brazil-2006). Likelihood ratios analysis was used to select the optimal cut-offs in each curve. Results: The two classification systems presented high sensitivity (92.5 - 98.6%) and moderate specificity (75.9 - 85.0%) for both sexes. The optimal BMI cut-offs improved specificity with no marked loss of sensitivity. Using the proposed BMI cut-offs, the post-test probability of predicting excess body fatness for children classified as non-overweight decreased from 10 (pre-test probability) to 1.4% in girls and to 1.1% in boys. For overweight children, this probability increased to more than 46.0%. Conclusion: The results showed that both the WHO-2007 and Brazil-2006 classification systems can be used as screening instruments for excess body fatness...

Impact of body mass index on the psychopathological profile of obese women

Papelbaum,Marcelo; Moreira,Rodrigo Oliveira; Gaya,Caroline Wust do Nascimento; Preissler,Carolina; Coutinho,Walmir Ferreira
Fonte: Associação Brasileira de Psiquiatria - ABP Publicador: Associação Brasileira de Psiquiatria - ABP
Tipo: Artigo de Revista Científica Formato: text/html
Publicado em 01/03/2010 EN
Relevância na Pesquisa
75.58%
OBJECTIVE: Obesity is a complex condition associated with a host of medical disorders. One common assumption is that obesity is also related to psychological and emotional complications. However, some studies have shown that obesity itself does not appear to be systematically associated with psychopathological outcomes.The objective of the present study was to evaluate the impact that the various degrees of obesity have on the psychopathological profile of obese patients. METHOD: The study sample consisted of 217 women classified as obese (body mass index > 30 kg/m²) who sought medical treatment for weight loss and were consecutively invited to participate in the study. Anthropometric data were registered for all participants. Psychiatric evaluations were performed using the Beck Depression Inventory and Symptom Checklist-90. Multiple regression analysis was used in order to determine whether any of the studied variables (age, level of education, Beck Depression Inventory score and body mass index) were independently correlated with the score on the different subscales of the Symptom Checklist-90. RESULTS: Only body mass index was found to correlate significantly with the score on the somatization subscale of the Symptom Checklist-90 (r = 0.148...

Radiorecovery Activity of Dicopper(II) Tetrakis(3,5-Diiso propylsalicylate) Includes Recovery of Radiation-Induced Loss of Body Mass and Impaired Mouse Locomotion

Henderson, Renada D.; Henderson, Timothy D.; Irving, Henry J.; Sorenson, John R. J.
Fonte: Hindawi Publishing Corporation Publicador: Hindawi Publishing Corporation
Tipo: Artigo de Revista Científica
Publicado em //1999 EN
Relevância na Pesquisa
75.62%
Dicopper(II) tetrakis(3,5-diisopropylsalicylate), [Cu(II)2(3,5-DIPS)4], is effective in increasing survival of lethally irradiated mice when it is administered after irradiation. The possibility that this radiorecovery activity might also facilitate recovery from radiation-induced impaired increase in body mass and locomotion was examined. Cu(II)2(3,5-DIPS)4 was used to treat LD 50/30 gamma irradiated female C57BL/6 mice after irradiation. A dose of 0, 5, 10, or 20 μmol Cu(II)2 (3, 5-DIPS)4 /kilogram of body mass was administered subcutaneously 3 hrs after LD 50/30 irradiation and change in body mass and locomotor activity measured daily throughout the 30 day post-irradiation period. Treatment with 5, 10, or 20 μmol Cu(II)2 (3,5-DIPS)4 /kg of body mass increased survival, which was statistically significant for the 10 μmol /kg of body mass-treated group compared to the vehicle-treated group (P<0.05), significantly (P<0.05) increased recovery of locomotion from days 13 to 15 post-irradiation onward for all treated groups compared to vehicle-treated mice, and increased recovery of body mass gain from day 14 onward for the 20 μmol /kg of body mass-treated group (P<0.001) and day 21, although not statistically significant...

Evidence of the Trade-Off between Starvation and Predation Risks in Ducks

Zimmer, Cédric; Boos, Mathieu; Poulin, Nicolas; Gosler, Andrew; Petit, Odile; Robin, Jean-Patrice
Fonte: Public Library of Science Publicador: Public Library of Science
Tipo: Artigo de Revista Científica
Publicado em 18/07/2011 EN
Relevância na Pesquisa
65.66%
The theory of trade-off between starvation and predation risks predicts a decrease in body mass in order to improve flight performance when facing high predation risk. To date, this trade-off has mainly been validated in passerines, birds that store limited body reserves for short-term use. In the largest avian species in which the trade-off has been investigated (the mallard, Anas platyrhynchos), the slope of the relationship between mass and flight performance was steeper in proportion to lean body mass than in passerines. In order to verify whether the same case can be applied to other birds with large body reserves, we analyzed the response to this trade-off in two other duck species, the common teal (Anas crecca) and the tufted duck (Aythya fuligula). Predation risk was simulated by disturbing birds. Ducks within disturbed groups were compared to non-disturbed control birds. In disturbed groups, both species showed a much greater decrease in food intake and body mass during the period of simulated high risk than those observed in the control group. This loss of body mass allows reaching a more favourable wing loading and increases power for flight, hence enhancing flight performances and reducing predation risk. Moreover, body mass loss and power margin gain in both species were higher than in passerines...

The measurement and influence of body composition phenotype in ageing: an analysis of health -related changes in Irish adults

Toomey, Clodagh
Fonte: University of Limerick Publicador: University of Limerick
Tipo: info:eu-repo/semantics/doctoralThesis; all_ul_research; ul_published_reviewed; ul_theses_dissertations
ENG
Relevância na Pesquisa
75.66%
peer-reviewed; Ageing is a process associated with adverse effects on nearly every facet of human body composition and is generally accompanied by progressive loss in lean mass (sarcopenia) and bone mineral density (BMD) (osteoporosis) and concomitant increase in total and visceral adiposity (fat obesity). However, body mass index (BMI), the metric commonly used to quantify changes in body composition, does not adequately represent these health-related changes. The technological advance in bone and soft-tissue imaging offered by dual energy X-ray absorptiometry (DXA) provides an accepted criterion measure of body composition into three components (adiposity, lean mass, BMD). Using DXA as the reference method of measurement, this thesis reports a cross-sectional characterisation of body composition in a convenience sample of 1,606 Irish adult men and women age 18-81 years. Interrogation of these data afforded the opportunity to challenge the validity and sensitivity of metrics such as BMI, redefine the criterion reference of adiposity and monitor age-related change and interrelationships between components of body composition. The first study recommends measurement of a body fat mass index (BFMI) for accurate classification of adiposity that is independent of change in fat-free mass. An age-...

Milk as a rehydration fluid following exercise-induced loss of body mass

Seery, Suzanne
Fonte: University of Limerick Publicador: University of Limerick
Tipo: info:eu-repo/semantics/masterThesis; all_ul_research; ul_published_reviewed; ul_theses_dissertations
ENG
Relevância na Pesquisa
135.66%
peer-reviewed; The effectiveness of 0.1% fat milk (M) at restoring fluid balance after exercise and heat induced hypohydration was compared to a commercially available carbohydrate-electrolyte (CE) sports drink and water (W) using a metered rate of fluid ingestion. After losing 2.1 (0.2) % body mass, participants (n = 7) consumed a drink volume equivalent to 150% of their body mass loss, over a period of 2.5-3 hours. A metered rate of fluid ingestion was chosen as it is widely acknowledged that rapid ingestion (< 60 min) of a large volume of fluid (>1000ml) can over-stimulate diuresis. Blood and urine samples were collected before and for 5 hours after exercise-induced loss of body mass. Mean plasma osmolality was higher in the M trial 289 (3) mOsmol/kg compared to W 286 (3) mOsmol/kg and CE 287 (3) mOsmol/kg, during this 5 hour period (p = 0.021). Indicative of a reduced diuretic response, urine volume was lower and urine osmolality higher in the M trial compared with CE and W. Total urine volume during the M trial was 774 (92) mL compared to CE 1314 (434) mL and W 1429 (345) mL (p = 0.023). A net positive fluid balance from 2h to 5h was achieved in the M trial, whereas the CE and W trials returned to net negative balance by the end of the 5h rehydration period. Final net fluid balance in the M trial was 117 (122) mL compared to CE -381 (460) mL and W trials -539 (390) mL (p = 0.049). This represents a final relative net fluid balance of 5.9 (5.9) % in the M trial compared with CE -22.7 (23.3) % (p = 0.048) and W - 30.9 (22.7) % (p = 0.012).

Oral testosterone supplementation increases muscle and decreases fat mass in healthy elderly males with low-normal gonadal status

Wittert, G.; Chapman, I.; Haren, M.; Mackintosh, S.; Coates, P.; Morley, J.
Fonte: Gerontological Society of America Publicador: Gerontological Society of America
Tipo: Artigo de Revista Científica
Publicado em //2003 EN
Relevância na Pesquisa
65.64%
BACKGROUND: Loss of muscle mass (sarcopenia) leads to frailty in older men. The decline in testosterone over the life span may contribute to this muscle loss. We studied the ability of oral testosterone to prevent muscle loss in older men over a 12-month period. METHODS: A standard dose (80 mg twice daily) of testosterone undecanoate or placebo was administered for 1 year to 76 healthy men aged 60 years or older. All men had a free testosterone index of 0.3-0.5, which represents a value below the normal lower limit for young men (19-30 years), but remains within the overall normal male range. Measurements of body composition, muscle strength, hormones, and safety parameters were obtained at 0, 6, and 12 months. RESULTS: Lean body mass increased (p =.0001) and fat mass decreased (p =.02) in the testosterone as compared with the placebo-treated group. There were no significant effects on muscle strength. There was a significant increase in hematocrit (0.02%) in the testosterone-treated group (p =.03). Plasma triglycerides, total cholesterol, and low-density lipoprotein cholesterol levels were similar in both groups, but there was a decrease in high-density lipoprotein cholesterol (-0.1 mmol/L) at 12 months in the testosterone group as compared to the placebo group (p = 0.026). There were no differences in prostate-specific antigen or systolic or diastolic blood pressure between the groups. CONCLUSION: Oral testosterone administration to older relatively hypogonadal men results in an increase in muscle mass and a decrease in body fat.; Gary A. Wittert...

Effects of body mass index at transplant on outcomes of kidney transplantation

Chang, S.; Coates, P.; McDonald, S.
Fonte: Lippincott Williams & Wilkins Publicador: Lippincott Williams & Wilkins
Tipo: Artigo de Revista Científica
Publicado em //2007 EN
Relevância na Pesquisa
75.57%
BACKGROUND: While obesity increases postoperative complications and cardiovascular risks, its effects on long-term kidney transplant outcomes are less clear. METHODS: We used data from the Australian and New Zealand Dialysis and Transplant (ANZDATA) Registry to examine the relationships between body mass index (BMI, classified according to World Health Organization criteria) at transplant and transplant outcome. Patients starting renal replacement therapy from April 1991 and who received a single-organ, primary kidney transplant (when aged > or =16 years) from April 1991 to December 2004 were included, and followed up to death or December 2005. Survival outcomes adjusted for important covariates were analyzed using Cox models, and cause-specific failures by competing risks analysis. Analysis using BMI at various times posttransplant was also performed. Intermediate outcomes were delayed graft function (DGF) and any acute rejection at 6 months. RESULTS: In all, 5684 patients were included. Obese patients had worse graft and patient survival only in univariate analyses, not in multivariate analyses (adjusted hazard ratio [HR] for graft loss: 1.10 [0.94-1.259], P=0.25; for patient death: 1.02 [0.83-1.25], P=0.87). Underweight patients had greater late (> or =5 years) death-censored graft loss (adjusted HR: 1.70 [1.10-2.64]...

Convergence of body mass index of immigrants to the Canadian-born population: evidence from the National Population Health Survey (1994-2006)

Singh Setia, M.; Quesnel-Vallee, A.; Abrahamowicz, M.; Tousignant, P.; Lynch, J.
Fonte: Kluwer Academic Publ Publicador: Kluwer Academic Publ
Tipo: Artigo de Revista Científica
Publicado em //2009 EN
Relevância na Pesquisa
75.51%
Recent immigrants typically have better physical health than the native born population. However, this 'healthy immigrant effect' tends to gradually wane over time, with increasing length of residence in the host country. To assess whether the body mass index (BMI) of different immigrant groups converged to the Canadian population's levels, we estimated 12-year trajectories of changes in BMI (accounting for socio-demographic changes). Using data from seven longitudinal waves of the National Population Health Survey (1994 through 2006), we compared the changes in BMI (kg/m(2)) among three groups: white immigrants, non-white immigrants and Canadian born, aged 18-54 at baseline. We applied linear random effects models to evaluate these BMI separately in 2,504 males and 2,960 females. BMI increased in Canadian born, white immigrants, and non-white immigrants over the 12-year period. However, non-white immigrants (males and females) had a lower mean BMI than Canadian born individuals during this period [Males: -2.27, 95% Confidence interval (CI) -3.02 to -1.53; Females: -1.84, 95% CI -2.79 to -0.90]. In contrast, the mean BMI in white male immigrants and Canadian born individuals were similar (-0.32, 95% CI -0.91 to 0.27). Even after adjusting for time since immigration...

Adult Onset Global Loss of the Fto Gene Alters Body Composition and Metabolism in the Mouse

McMurray, Fiona; Church, Chris D.; Larder, Rachel; Nicholson, George; Wells, Sara; Teboul, Lydia; Tung, Y. C. Loraine; Rimmington, Debra; Bosch, Fatima; Jimenez, Veronica; Yeo, Giles S. H.; O'Rahilly, Stephen; Ashcroft, Frances M.; Coll, Anthony P.; Cox,
Fonte: Public Library of Science Publicador: Public Library of Science
Tipo: Artigo de Revista Científica
EN
Relevância na Pesquisa
65.72%
The strongest BMI–associated GWAS locus in humans is the FTO gene. Rodent studies demonstrate a role for FTO in energy homeostasis and body composition. The phenotypes observed in loss of expression studies are complex with perinatal lethality, stunted growth from weaning, and significant alterations in body composition. Thus understanding how and where Fto regulates food intake, energy expenditure, and body composition is a challenge. To address this we generated a series of mice with distinct temporal and spatial loss of Fto expression. Global germline loss of Fto resulted in high perinatal lethality and a reduction in body length, fat mass, and lean mass. When ratio corrected for lean mass, mice had a significant increase in energy expenditure, but more appropriate multiple linear regression normalisation showed no difference in energy expenditure. Global deletion of Fto after the in utero and perinatal period, at 6 weeks of age, removed the high lethality of germline loss. However, there was a reduction in weight by 9 weeks, primarily as loss of lean mass. Over the subsequent 10 weeks, weight converged, driven by an increase in fat mass. There was a switch to a lower RER with no overall change in food intake or energy expenditure. To test if the phenotype can be explained by loss of Fto in the mediobasal hypothalamus...

The estimation of body mass index and physical attractiveness is dependent on the observer's own body mass index.

Tovée, M J; Emery, J L; Cohen-Tovée, E M
Fonte: PubMed Publicador: PubMed
Tipo: Artigo de Revista Científica
Publicado em 07/10/2000 EN
Relevância na Pesquisa
65.62%
A disturbance in the evaluation of personal body mass and shape is a key feature of both anorexia and bulimia nervosa. However, it is uncertain whether overestimation is a causal factor in the development of these eating disorders or is merely a secondary effect of having a low body mass. Moreover, does this overestimation extend to the perception of other people's bodies? Since body mass is an important factor in the perception of physical attractiveness, we wanted to determine whether this putative overestimation of self body mass extended to include the perceived attractiveness of others. We asked 204 female observers (31 anorexic, 30 bulimic and 143 control) to estimate the body mass and rate the attractiveness of a set of 25 photographic images showing people of varying body mass index (BMI). BMI is a measure of weight scaled for height (kg m(- 2)). The observers also estimated their own BMI. Anorexic and bulimic observers systematically overestimated the body mass of both their own and other people's bodies, relative to controls, and they rated a significantly lower body mass to be optimally attractive. When the degree of overestimation is plotted against the BMI of the observer there is a strong correlation. Taken across all our observers...

A close association of body cell mass loss with disease activity and disability in Chinese patients with rheumatoid arthritis

Chen,Yi-Ming; Chen,Hsin-Hua; Hsieh,Chia-Wei; Hsieh,Tsu-Yi; Lan,Joung-Liang; Chen,Der-Yuan
Fonte: Faculdade de Medicina / USP Publicador: Faculdade de Medicina / USP
Tipo: Artigo de Revista Científica Formato: text/html
Publicado em 01/01/2011 EN
Relevância na Pesquisa
65.72%
OBJECTIVES: To investigate the association of body cell mass loss with disease activity and disability in rheumatoid arthritis patients. INTRODUCTION: Rheumatoid cachexia, defined as the loss of body cell mass, is important but under-recognized and contributes to morbidity and mortality in patients with rheumatoid arthritis. METHODS: One hundred forty-nine rheumatoid arthritis patients and 53 healthy, non-rheumatoid arthritis control subjects underwent anthropometric measurements of body mass index and waist and hip circumferences. Bioelectrical impedance analysis was used to determine the subjects' body compositions, including fat mass, skeletal lean mass, and body cell mass. The disease activity of rheumatoid arthritis was assessed using C-reactive protein serum, the erythrocyte sedimentation rate and the 28-joint disease activity score, while disability was evaluated using a health assessment questionnaire. RESULTS: Rheumatoid arthritis patients had lower waist-to-hip ratio (0.86 ± 0.07 vs. 0.95 ± 0.06; p<0.001) and lower skeletal lean mass indexes (14.44 ±1.52 vs. 15.18 ± 1.35; p = 0.002) than those in the healthy control group. Compared with rheumatoid arthritis patients with higher body cell masses, those with body cell masses lower than median had higher erythrocyte sedimentation rates (40.10 ± 27.33 vs. 25.09 ± 14.85; p<0.001)...

Development and application of a nutrient support to age related lean tissue mass loss in an Irish population (50-70 years); Validation of methods used to investigate cross sectional observations of the intake of nutrients implicated, and a longitudinal intervention applying a nutrient support to age related lean tissue mass loss

Norton, Catherine
Fonte: University of Limerick Publicador: University of Limerick
Tipo: info:eu-repo/semantics/doctoralThesis; all_ul_research; ul_published_reviewed; ul_theses_dissertations
ENG
Relevância na Pesquisa
65.69%
peer-reviewed; Prevention of the age-related loss of muscle mass and strength (sarcopaenia) is fundamental to conserving functional capability in older age and enabling independent living. To develop preventive strategies, a better understanding is needed of the lifestyle dynamics influencing age related lean tissue mass loss. Increasing evidence suggests that a modification of protein intake, which is quantitative, qualitative and optimally apportioned, is necessary to counteract progressive lean tissue loss in the elderly. Among other nutrients implicated are antioxidants. Muscle mass and strength in later life are a reflection of both the rate of muscle loss and the peak attained in early life, therefore efforts to prevent sarcopaenia also need to consider diet across the life-course and the potential effectiveness of early interventions. This thesis aimed to assess the adequacy of protein intake (quantity, quality and apportioning), and dietary total antioxidant capacity (TAC) in a convenience population of healthy, ‘young’ elderly Irish adults. This necessitated modifications to traditional, and the development of novel approaches to dietary data collection and nutrient intakes analysis methods. Two innovative nutrient intake analysis methods are proposed to estimate dietary total antioxidant capacity and protein quality (as essential amino acid content) in dietary intakes. Progressing from this assessment a subsequent aim was to investigate whether supplementing dietary intake with a milk protein rich in essential amino acids at both smaller meals in the day over a 24 week intervention...

A close association of body cell mass loss with disease activity and disability in Chinese patients with rheumatoid arthritis

Chen, Yi-Ming; Chen, Hsin-Hua; Hsieh, Chia-Wei; Hsieh, Tsu-Yi; Lan, Joung-Liang; Chen, Der-Yuan
Fonte: Universidade de São Paulo. Faculdade de Medicina Publicador: Universidade de São Paulo. Faculdade de Medicina
Tipo: info:eu-repo/semantics/article; info:eu-repo/semantics/publishedVersion; ; ; ; ; ; Formato: application/pdf
Publicado em 01/01/2011 ENG
Relevância na Pesquisa
65.68%
OBJECTIVES: To investigate the association of body cell mass loss with disease activity and disability in rheumatoid arthritis patients. INTRODUCTION: Rheumatoid cachexia, defined as the loss of body cell mass, is important but under-recognized and contributes to morbidity and mortality in patients with rheumatoid arthritis. METHODS: One hundred forty-nine rheumatoid arthritis patients and 53 healthy, non-rheumatoid arthritis control subjects underwent anthropometric measurements of body mass index and waist and hip circumferences. Bioelectrical impedance analysis was used to determine the subjects' body compositions, including fat mass, skeletal lean mass, and body cell mass. The disease activity of rheumatoid arthritis was assessed using C-reactive protein serum, the erythrocyte sedimentation rate and the 28-joint disease activity score, while disability was evaluated using a health assessment questionnaire. RESULTS: Rheumatoid arthritis patients had lower waist-to-hip ratio (0.86 ± 0.07 vs. 0.95 ± 0.06; p

Milk as a rehydration fluid following exercise-induced loss of body mass.

Seery, Suzanne
Fonte: U*niversity of Limerick Publicador: U*niversity of Limerick
Tipo: info:eu-repo/semantics/masterThesis; all_ul_research; ul_theses_dissertations
ENG
Relevância na Pesquisa
135.66%
peer-reviewed; The effectiveness of 0.1% fat milk (M) at restoring fluid balance after exercise and heat induced hypohydration was compared to a commercially available carbohydrate-electrolyte (CE) sports drink and water (W) using a metered rate of fluid ingestion. After losing 2.1 (0.2) % body mass, participants (n = 7) consumed a drink volume equivalent to 150% of their body mass loss, over a period of 2.5-3 hours. A metered rate of fluid ingestion was chosen as it is widely acknowledged that rapid ingestion (< 60 min) of a large volume of fluid (>1000ml) can over-stimulate diuresis. Blood and urine samples were collected before and for 5 hours after exercise-induced loss of body mass. Mean plasma osmolality was higher in the M trial 289 (3) mOsmol/kg compared to W 286 (3) mOsmol/kg and CE 287 (3) mOsmol/kg, during this 5 hour period (p = 0.021). Indicative of a reduced diuretic response, urine volume was lower and urine osmolality higher in the M trial compared with CE and W. Total urine volume during the M trial was 774 (92) mL compared to CE 1314 (434) mL and W 1429 (345) mL (p = 0.023). A net positive fluid balance from 2h to 5h was achieved in the M trial, whereas the CE and W trials returned to net negative balance by the end of the 5h rehydration period. Final net fluid balance in the M trial was 117 (122) mL compared to CE -381 (460) mL and W trials -539 (390) mL (p = 0.049). This represents a final relative net fluid balance of 5.9 (5.9) % in the M trial compared with CE -22.7 (23.3) % (p = 0.048) and W - 30.9 (22.7) % (p = 0.012).

Disease and weight loss: a prospective study of middle-aged and older adults in Costa Rica and England

Blue,Laura; Goldman,Noreen; Rosero-Bixby,Luis
Fonte: Instituto Nacional de Salud Pública Publicador: Instituto Nacional de Salud Pública
Tipo: Artigo de Revista Científica Formato: text/html
Publicado em 01/08/2015 EN
Relevância na Pesquisa
65.62%
Objective. To determine whether disease predicts weight loss in population-based studies, as this may confound the relationship between weight and mortality. Materials and methods. We used longitudinal data from the Costa Rican Longevity and Healthy Aging Study (CRELES) and the English Longitudinal Study of Ageing (ELSA). We defined two overlapping outcomes of measured weight loss between waves: >1.0 point of body mass index (BMI) and >2.0 BMI points. Logistic regression models estimated the associations with disease, adjusting for age (range 52-79), sex, smoking, and initial BMI. Results. In ELSA, onset of diabetes, cancer, or lung disease is associated with loss >2.0 points (respectively, OR=2.25 [95%CI: 1.34-3.80]; OR=2.70 [95%CI: 1.49-4.89]; OR=1.82 [95%CI: 1.02-3.26]). In CRELES, disease-onset reports are not associated with weight loss at 5% significance, but statistical power to detect associations is poor. Conclusion. Although it is known that some diseases cause weight loss, at the population level these associations vary considerably across samples.

Effect of caffeine ingestion on fluid balance during exercise in the heat and during recovery

Zhang,Y; Carter,S J; Schumacker,R E; Neggers,Y H; Curtner-Smith,M D; Richardson,M T; Green,J M; Bishop,P A
Fonte: South African Journal of Sports Medicine Publicador: South African Journal of Sports Medicine
Tipo: Artigo de Revista Científica Formato: text/html
Publicado em 01/01/2014 EN
Relevância na Pesquisa
65.63%
BACKGROUND: The effect of ingestion of a common stimulant, caffeine, on fluid balance during exercise and recovery is not fully known. OBJECTIVES: To determine the effect of caffeine on fluid balance during exercise in the heat and during a 3-hour recovery period thereafter. METHODS: In a randomised, controlled design, caffeine-naive participants (N=8) pedalled on a bike to achieve 2.5% baseline body mass loss in a hot environment in four separate conditions: with (C+) or without (C-) caffeine ingestion (6 mg/kg of body mass) prior to exercise, followed by (W+) or without (W-) 100% fluid replenishment (water) of the body mass loss during a 3-hour recovery period (yielding C+W+, C+W-, C-W+ and C-W-, respectively). RESULTS: Mean (standard deviation) urine production was not different (p>0.05) regardless of rehydration status: 230 (162) mL (C+W-) v. 168 (77) mL (C-W-); and 713 (201) mL (C+W+) v. 634 (185) mL (C-W+). For the 3-hour recovery, caffeine ingestion caused higher hypohydration during rehydration conditions (p=0.02), but practically the mean difference in the loss of body mass was only 0.2 kg. CONCLUSION: In practical terms, there was no evidence that caffeine ingestion in moderation would impair fluid balance during prolonged exercise in the heat or during 3 hours of recovery.

Performance of references based on body mass index for detecting excess body fatness in schoolchildren aged 7 to10 years

Leal,Danielle Biazzi; Assis,Maria Alice Altenburg de; Conde,Wolney Lisboa; Bellisle,France
Fonte: Associação Brasileira de Pós -Graduação em Saúde Coletiva Publicador: Associação Brasileira de Pós -Graduação em Saúde Coletiva
Tipo: Artigo de Revista Científica Formato: text/html
Publicado em 01/06/2014 EN
Relevância na Pesquisa
75.57%
Objective: To compare the sensitivity and specificity of body mass index (BMI)-based classification systems and to determine the optimal cut-offs for predicting excess body fatness in schoolchildren. Methods: 2795 schoolchildren aged 7 - 10 years were examined. Excess body fatness was defined as the standardized residuals of the sum of three skinfold thickness ranking at or above the 90th percentile. The international BMI-based system recommended by the World Health Organization (WHO-2007) was evaluated on the basis of its sensitivity and specificity for detecting excess body fatness and compared with a national BMI reference (Brazil-2006). Likelihood ratios analysis was used to select the optimal cut-offs in each curve. Results: The two classification systems presented high sensitivity (92.5 - 98.6%) and moderate specificity (75.9 - 85.0%) for both sexes. The optimal BMI cut-offs improved specificity with no marked loss of sensitivity. Using the proposed BMI cut-offs, the post-test probability of predicting excess body fatness for children classified as non-overweight decreased from 10 (pre-test probability) to 1.4% in girls and to 1.1% in boys. For overweight children, this probability increased to more than 46.0%. Conclusion: The results showed that both the WHO-2007 and Brazil-2006 classification systems can be used as screening instruments for excess body fatness...

Disease and weight loss: a prospective study of middle-aged and older adults in Costa Rica and England

Blue,Laura; Goldman,Noreen; Rosero-Bixby,Luis
Fonte: Instituto Nacional de Salud Pública Publicador: Instituto Nacional de Salud Pública
Tipo: Artigo de Revista Científica Formato: text/html
Publicado em 01/08/2015 EN
Relevância na Pesquisa
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Objective. To determine whether disease predicts weight loss in population-based studies, as this may confound the relationship between weight and mortality. Materials and methods. We used longitudinal data from the Costa Rican Longevity and Healthy Aging Study (CRELES) and the English Longitudinal Study of Ageing (ELSA). We defined two overlapping outcomes of measured weight loss between waves: >1.0 point of body mass index (BMI) and >2.0 BMI points. Logistic regression models estimated the associations with disease, adjusting for age (range 52-79), sex, smoking, and initial BMI. Results. In ELSA, onset of diabetes, cancer, or lung disease is associated with loss >2.0 points (respectively, OR=2.25 [95%CI: 1.34-3.80]; OR=2.70 [95%CI: 1.49-4.89]; OR=1.82 [95%CI: 1.02-3.26]). In CRELES, disease-onset reports are not associated with weight loss at 5% significance, but statistical power to detect associations is poor. Conclusion. Although it is known that some diseases cause weight loss, at the population level these associations vary considerably across samples.