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Ghosh S, Thomas T, Kurpad A, Sachdev HS. Is iron status associated with markers of non-communicable disease in adolescent Indian children? Eur J Clin Nutr 2023; 77:173-181. [PMID: 36280731 DOI: 10.1038/s41430-022-01222-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2021] [Revised: 09/27/2022] [Accepted: 09/28/2022] [Indexed: 11/09/2022]
Abstract
BACKGROUND High body iron status has been associated with non-communicable diseases (NCD) like diabetes (high fasting blood glucose, FBG), hypertension (HTN) or dyslipidaemia (high total cholesterol, TC) in adults, but this has not been examined in adolescent children. This is relevant to iron supplementation and food iron fortification programs that are directed at Indian children. METHODS The association of NCD with Serum Ferritin (SF) was examined using logistic additive models, adjusted for confounders such as age, body mass index, C-Reactive Protein, haemoglobin and sex, in adolescent (10-19 years old) participants of the Indian Comprehensive National Nutrition Survey. The interaction of these associations with wealth and co-existing prediabetes was also examined. A scenario analysis was also done to understand the impact of iron fortification of cereals on the prevalence NCD among adolescents. RESULTS The odds ratio (OR) of high FBG, HTN and TC were 1.05 (95% CI: 1.01-1.08), 1.02 (95% CI: 1.001-1.03) and 1.04 (95% CI: 1.01-1.06) respectively for every 10 µg/L increase in SF. The odds for high TC increased with co-existing prediabetes. The scenario analysis showed that providing 10 mg of iron/day by fortification could increase the prevalence of high FBG by 2-14% across states of India. Similar increments in HTN and TC can also be expected. CONCLUSIONS High SF is significantly associated with NCD in adolescents, dependent on wealth and co-existing prediabetes. This should be considered when enhancing iron intake in anaemia prevention programs, and the NCD relationship with body iron stores should be studied.
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Affiliation(s)
- S Ghosh
- St John's Medical College, Bengaluru, India
| | - T Thomas
- St John's Medical College, Bengaluru, India
| | - A Kurpad
- St John's Medical College, Bengaluru, India.
| | - H S Sachdev
- Sitaram Bhartia Institute of Science and Research, New Delhi, India.
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Dumuid D, Olds T, Lewis LK, Martin-Fernández JA, Barreira T, Broyles S, Chaput JP, Fogelholm M, Hu G, Kuriyan R, Kurpad A, Lambert EV, Maia J, Matsudo V, Onywera VO, Sarmiento OL, Standage M, Tremblay MS, Tudor-Locke C, Zhao P, Katzmarzyk P, Gillison F, Maher C. The adiposity of children is associated with their lifestyle behaviours: a cluster analysis of school-aged children from 12 nations. Pediatr Obes 2018; 13:111-119. [PMID: 28027427 DOI: 10.1111/ijpo.12196] [Citation(s) in RCA: 48] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/15/2016] [Revised: 08/09/2016] [Accepted: 09/30/2016] [Indexed: 11/30/2022]
Abstract
BACKGROUND The relationship between children's adiposity and lifestyle behaviour patterns is an area of growing interest. OBJECTIVES The objectives of this study are to identify clusters of children based on lifestyle behaviours and compare children's adiposity among clusters. METHODS Cross-sectional data from the International Study of Childhood Obesity, Lifestyle and the Environment were used. PARTICIPANTS the participants were children (9-11 years) from 12 nations (n = 5710). MEASURES 24-h accelerometry and self-reported diet and screen time were clustering input variables. Objectively measured adiposity indicators were waist-to-height ratio, percent body fat and body mass index z-scores. ANALYSIS sex-stratified analyses were performed on the global sample and repeated on a site-wise basis. Cluster analysis (using isometric log ratios for compositional data) was used to identify common lifestyle behaviour patterns. Site representation and adiposity were compared across clusters using linear models. RESULTS Four clusters emerged: (1) Junk Food Screenies, (2) Actives, (3) Sitters and (4) All-Rounders. Countries were represented differently among clusters. Chinese children were over-represented in Sitters and Colombian children in Actives. Adiposity varied across clusters, being highest in Sitters and lowest in Actives. CONCLUSIONS Children from different sites clustered into groups of similar lifestyle behaviours. Cluster membership was linked with differing adiposity. Findings support the implementation of activity interventions in all countries, targeting both physical activity and sedentary time.
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Affiliation(s)
- Dorothea Dumuid
- School of Health Sciences, University of South Australia, Adelaide, Australia
| | - T Olds
- School of Health Sciences, University of South Australia, Adelaide, Australia
| | - L K Lewis
- School of Health Sciences, University of South Australia, Adelaide, Australia.,School of Health Sciences, Flinders University, Adelaide, Australia
| | | | - T Barreira
- Population Science, Pennington Biomedical Research Center, Baton Rouge, USA.,School of Education, Syracuse University, Syracuse, USA
| | - S Broyles
- Population Science, Pennington Biomedical Research Center, Baton Rouge, USA
| | - J-P Chaput
- Children's Hospital of Eastern Ontario Research Institute, Ottawa, Canada
| | - M Fogelholm
- Department of Food and Environmental Sciences, University of Helsinki, Helsinki, Finland
| | - G Hu
- Population Science, Pennington Biomedical Research Center, Baton Rouge, USA
| | - R Kuriyan
- Department of Nutrition, St John's Research Institute, Bengaluru, India
| | - A Kurpad
- Department of Nutrition, St John's Research Institute, Bengaluru, India
| | - E V Lambert
- Department of Human Biology, University of Cape Town, Cape Town, South Africa
| | - J Maia
- Faculty of Sport, University of Porto, Porto, Portugal
| | - V Matsudo
- Center of Studies of the Physical Fitness Research Laboratory from Sao Caetano du Sul (CELAFISCS), Sao Caetano do Sul, Brazil
| | - V O Onywera
- Department of Recreation Management and Exercise Science, Kenyatta University, Kenyatta, Kenya
| | - O L Sarmiento
- Facultad de Medicina, Universidad de los Andes, Bogotá, Colombia
| | - M Standage
- Department for Health, University of Bath, Bath, UK
| | - M S Tremblay
- Children's Hospital of Eastern Ontario Research Institute, Ottawa, Canada
| | - C Tudor-Locke
- Department of Kinesiology, University of Massachusetts Amherst, Amherst, USA
| | - P Zhao
- Tianjin Women's and Children's Health Center, Tianjin, China
| | - P Katzmarzyk
- Population Science, Pennington Biomedical Research Center, Baton Rouge, USA
| | - F Gillison
- Department for Health, University of Bath, Bath, UK
| | - C Maher
- School of Health Sciences, University of South Australia, Adelaide, Australia
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Chaput JP, Katzmarzyk PT, Barnes JD, Fogelholm M, Hu G, Kuriyan R, Kurpad A, Lambert EV, Maher C, Maia J, Matsudo V, Olds T, Onywera V, Sarmiento OL, Standage M, Tudor-Locke C, Zhao P, Tremblay MS. Mid-upper arm circumference as a screening tool for identifying children with obesity: a 12-country study. Pediatr Obes 2017; 12:439-445. [PMID: 27238202 DOI: 10.1111/ijpo.12162] [Citation(s) in RCA: 39] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/23/2015] [Revised: 04/21/2016] [Accepted: 05/09/2016] [Indexed: 12/17/2022]
Abstract
BACKGROUND No studies have examined if mid-upper arm circumference (MUAC) can be an alternative screening tool for obesity in an international sample of children differing widely in levels of human development. OBJECTIVE Our aim is to determine whether MUAC could be used to identify obesity in children from 12 countries in five major geographic regions of the world. METHODS This observational, multinational cross-sectional study included 7337 children aged 9-11 years. Anthropometric measurements were objectively assessed, and obesity was defined according to the World Health Organization reference data. RESULTS In the total sample, MUAC was strongly correlated with adiposity indicators in both boys and girls (r > 0.86, p < 0.001). The accuracy level of MUAC for identifying obesity was high in both sexes and across study sites (overall area under the curve of 0.97, sensitivity of 95% and specificity of 90%). The MUAC cut-off value to identify obesity was ~25 cm for both boys and girls. In country-specific analyses, the cut-off value to identify obesity ranged from 23.2 cm (boys in South Africa) to 26.2 cm (girls in the UK). CONCLUSIONS Results from this 12-country study suggest that MUAC is a simple and accurate measurement that may be used to identify obesity in children aged 9-11 years. MUAC may be a promising screening tool for obesity in resource-limited settings.
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Affiliation(s)
- J-P Chaput
- Children's Hospital of Eastern Ontario Research Institute, Ottawa, Canada
| | | | - J D Barnes
- Children's Hospital of Eastern Ontario Research Institute, Ottawa, Canada
| | - M Fogelholm
- Department of Food and Environmental Sciences, University of Helsinki, Helsinki, Finland
| | - G Hu
- Pennington Biomedical Research Center, Baton Rouge, USA
| | - R Kuriyan
- St. Johns Research Institute, Bangalore, India
| | - A Kurpad
- St. Johns Research Institute, Bangalore, India
| | - E V Lambert
- Division of Exercise Science and Sports Medicine, Department of Human Biology, Faculty of Health Sciences, University of Cape Town, Cape Town, South Africa
| | - C Maher
- Alliance for Research in Exercise Nutrition and Activity (ARENA), School of Health Sciences, University of South Australia, Adelaide, Australia
| | - J Maia
- CIFI2D, Faculdade de Desporto, University of Porto, Porto, Portugal
| | - V Matsudo
- Centro de Estudos do Laboratório de Aptidão Física de São Caetano do Sul (CELAFISCS), Sao Paulo, Brazil
| | - T Olds
- Alliance for Research in Exercise Nutrition and Activity (ARENA), School of Health Sciences, University of South Australia, Adelaide, Australia
| | - V Onywera
- Department of Recreation Management and Exercise Science, Kenyatta University, Nairobi, Kenya
| | - O L Sarmiento
- School of Medicine, Universidad de los Andes, Bogota, Colombia
| | - M Standage
- Department for Health, University of Bath, Bath, UK
| | - C Tudor-Locke
- Department of Kinesiology, University of Massachusetts Amherst, Amherst, USA
| | - P Zhao
- Tianjin Women's and Children's Health Center, Tianjin, China
| | - M S Tremblay
- Children's Hospital of Eastern Ontario Research Institute, Ottawa, Canada
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Katzmarzyk PT, Barreira TV, Broyles ST, Chaput JP, Fogelholm M, Hu G, Kuriyan R, Kurpad A, Lambert EV, Maher C, Maia J, Matsudo V, Olds T, Onywera V, Sarmiento OL, Standage M, Tremblay MS, Tudor-Locke C, Zhao P, Church TS. Association between body mass index and body fat in 9-11-year-old children from countries spanning a range of human development. Int J Obes Suppl 2015; 5:S43-6. [PMID: 27152184 DOI: 10.1038/ijosup.2015.18] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
The purpose was to assess associations between body mass index (BMI) and body fat in a multinational sample of 9-11-year-old children. The sample included 7265 children from countries ranging in human development. Total body fat (TBF) and percentage body fat (PBF) were measured with a Tanita SC-240 scale and BMI z-scores (BMIz) and percentiles were computed using reference data from the World Health Organization and the U.S. Centers for Disease Control and Prevention, respectively. Mean PBF at BMIz values of -1, 0 and +1 were estimated using multilevel models. Correlations between BMI and TBF were >0.90 in all countries, and correlations between BMI and PBF ranged from 0.76 to 0.96. Boys from India had higher PBF than boys from several other countries at all levels of BMIz. Kenyan girls had lower levels of PBF than girls from several other countries at all levels of BMIz. Boys and girls from Colombia had higher values of PBF at BMIz=-1, whereas Colombian boys at BMIz 0 and +1 also had higher values of PBF than boys in other countries. Our results show a consistently high correlation between BMI and adiposity in children from countries representing a wide range of human development.
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Affiliation(s)
- P T Katzmarzyk
- Pennington Biomedical Research Center , Baton Rouge, LA, USA
| | - T V Barreira
- Pennington Biomedical Research Center, Baton Rouge, LA, USA; Department of Exercise Science, University of Syracuse, Syracuse, NY, USA
| | - S T Broyles
- Pennington Biomedical Research Center , Baton Rouge, LA, USA
| | - J-P Chaput
- Children's Hospital of Eastern Ontario Research Institute , Ottawa, Ontario, Canada
| | - M Fogelholm
- Department of Food and Environmental Sciences, University of Helsinki , Helsinki, Finland
| | - G Hu
- Pennington Biomedical Research Center , Baton Rouge, LA, USA
| | - R Kuriyan
- St Johns Research Institute , Bangalore, India
| | - A Kurpad
- St Johns Research Institute , Bangalore, India
| | - E V Lambert
- Division of Exercise Science and Sports Medicine, Department of Human Biology, Faculty of Health Sciences, University of Cape Town , Cape Town, South Africa
| | - C Maher
- Alliance for Research in Exercise Nutrition and Activity (ARENA), School of Health Sciences, University of South Australia , Adelaide, South Australia, Australia
| | - J Maia
- CIFI2D, Faculdade de Desporto, University of Porto , Porto, Portugal
| | - V Matsudo
- Centro de Estudos do Laboratório de Aptidão Física de São Caetano do Sul , Sao Paulo, Brazil
| | - T Olds
- Alliance for Research in Exercise Nutrition and Activity (ARENA), School of Health Sciences, University of South Australia , Adelaide, South Australia, Australia
| | - V Onywera
- Department of Recreation Management and Exercise Science, Kenyatta University , Nairobi, Kenya
| | - O L Sarmiento
- School of Medicine, Universidad de los Andes , Bogota, Colombia
| | - M Standage
- Department for Health, University of Bath , Bath, UK
| | - M S Tremblay
- Children's Hospital of Eastern Ontario Research Institute , Ottawa, Ontario, Canada
| | - C Tudor-Locke
- Pennington Biomedical Research Center, Baton Rouge, LA, USA; Department of Kinesiology, University of Massachusetts Amherst, Amherst, MA, USA
| | - P Zhao
- Tianjin Women's and Children's Health Center , Tianjin, China
| | - T S Church
- Pennington Biomedical Research Center , Baton Rouge, LA, USA
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Chaput JP, Katzmarzyk PT, LeBlanc AG, Tremblay MS, Barreira TV, Broyles ST, Fogelholm M, Hu G, Kuriyan R, Kurpad A, Lambert EV, Rae DE, Maher C, Maia J, Matsudo V, Onywera V, Sarmiento OL, Standage M, Tudor-Locke C, Zhao P, Olds T. Associations between sleep patterns and lifestyle behaviors in children: an international comparison. Int J Obes Suppl 2015; 5:S59-65. [PMID: 27152187 DOI: 10.1038/ijosup.2015.21] [Citation(s) in RCA: 67] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
OBJECTIVES Although evidence is accumulating on the importance of a good night's sleep for healthy eating and activity behaviors, existing research has mainly been conducted in high-income, developed countries with limited sociocultural variability. This study is the first to examine the associations between sleep patterns and lifestyle behaviors in children from 12 countries in five major geographic regions of the world. METHODS This observational, multinational cross-sectional study included 5777 children aged 9-11 years from sites in Australia, Brazil, Canada, China, Colombia, Finland, India, Kenya, Portugal, South Africa, the United Kingdom and the United States. Nocturnal sleep duration (hours per night), sleep efficiency (%) and bedtime (h:min) were monitored over 7 consecutive days using an accelerometer. Lifestyle behaviors included moderate-to-vigorous physical activity (MVPA), total sedentary time (SED), self-reported screen time (ST) and healthy/unhealthy diet patterns (HDP/UDP). Multilevel modeling analyses were used to account for the hierarchical nature of the data. RESULTS Overall, participants averaged 8.8 (s.d. 0.9) hours of sleep with 96.2% (s.d. 1.4) sleep efficiency and a mean bedtime of 2218 hours. After adjustment for age, sex, highest parental education and BMI z-score, results showed that (i) sleep duration was negatively associated with MVPA, SED and UDP score; (ii) sleep efficiency was negatively associated with MVPA and UDP score, and positively associated with SED; and (iii) later bedtime was positively associated with SED, ST and UDP score, and negatively associated with MVPA and HDP score. Results using categories of sleep patterns were consistent with the linear associations. Results also revealed that associations between sleep patterns and MVPA, SED and ST were significantly different between study sites, with stronger associations in high-income countries compared with low/middle-income countries. CONCLUSIONS Sleep characteristics are important correlates of lifestyle behaviors in children. Differences between countries suggest that interventions aimed at improving sleep and lifestyle behaviors should be culturally adapted.
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Affiliation(s)
- J-P Chaput
- Healthy Active Living and Obesity Research Group, Children's Hospital of Eastern Ontario Research Institute , Ottawa, Ontario, Canada
| | - P T Katzmarzyk
- Pennington Biomedical Research Center , Baton Rouge, LA, USA
| | - A G LeBlanc
- Healthy Active Living and Obesity Research Group, Children's Hospital of Eastern Ontario Research Institute, Ottawa, Ontario, Canada; University of Ottawa, Ottawa, Ontario, Canada
| | - M S Tremblay
- Healthy Active Living and Obesity Research Group, Children's Hospital of Eastern Ontario Research Institute , Ottawa, Ontario, Canada
| | - T V Barreira
- Pennington Biomedical Research Center, Baton Rouge, LA, USA; Department of Exercise Science, University of Syracuse, Syracuse, NY, USA
| | - S T Broyles
- Pennington Biomedical Research Center , Baton Rouge, LA, USA
| | - M Fogelholm
- Department of Food and Environmental Sciences, University of Helsinki , Helsinki, Finland
| | - G Hu
- Pennington Biomedical Research Center , Baton Rouge, LA, USA
| | - R Kuriyan
- St. Johns Research Institute , Bangalore, India
| | - A Kurpad
- St. Johns Research Institute , Bangalore, India
| | - E V Lambert
- Division of Exercise Science and Sports Medicine, Department of Human Biology, Faculty of Health Sciences, University of Cape Town , Cape Town, South Africa
| | - D E Rae
- Division of Exercise Science and Sports Medicine, Department of Human Biology, Faculty of Health Sciences, University of Cape Town , Cape Town, South Africa
| | - C Maher
- Alliance for Research in Exercise Nutrition and Activity (ARENA), School of Health Sciences, University of South Australia , Adelaide, South Australia, Australia
| | - J Maia
- CIFI2D, Faculdade de Desporto, University of Porto , Porto, Portugal
| | - V Matsudo
- Centro de Estudos do Laboratório de Aptidão Física de São Caetano do Sul (CELAFISCS) , Sao Paulo, Brazil
| | - V Onywera
- Department of Recreation Management and Exercise Science, Kenyatta University , Nairobi, Kenya
| | - O L Sarmiento
- School of Medicine Universidad de los Andes , Bogota, Colombia
| | - M Standage
- Department for Health, University of Bath , Bath, UK
| | - C Tudor-Locke
- Pennington Biomedical Research Center, Baton Rouge, LA, USA; Department of Kinesiology, University of Massachusetts Amherst, Amherst, MA, USA
| | - P Zhao
- Tianjin Women's and Children's Health Center , Tianjin, China
| | - T Olds
- Alliance for Research in Exercise Nutrition and Activity (ARENA), School of Health Sciences, University of South Australia , Adelaide, South Australia, Australia
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Tudor-Locke C, Mire EF, Barreira TV, Schuna JM, Chaput JP, Fogelholm M, Hu G, Kurpad A, Kuriyan R, Lambert EV, Maher C, Maia J, Matsudo V, Olds T, Onywera V, Sarmiento OL, Standage M, Tremblay MS, Zhao P, Church TS, Katzmarzyk PT. Nocturnal sleep-related variables from 24-h free-living waist-worn accelerometry: International Study of Childhood Obesity, Lifestyle and the Environment. Int J Obes Suppl 2015; 5:S47-52. [PMID: 27152185 DOI: 10.1038/ijosup.2015.19] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
OBJECTIVES We describe the process of identifying and defining nocturnal sleep-related variables (for example, movement/non-movement indicators of sleep efficiency, waking episodes, midpoint and so on) using the unique 24-h waist-worn free-living accelerometer data collected in the International Study of Childhood Obesity, Lifestyle and the Environment (ISCOLE). METHODS Seven consecutive days of 24-h waist-worn accelerometer (GT3X+, ActiGraph LLC) data were collected from over 500 children at each site. An expert subgroup of the research team with accelerometry expertize, frontline data collectors and data managers met on several occasions to categorize and operationally define nocturnal accelerometer signal data patterns. The iterative process was informed by the raw data drawn from a sub set of the US data, and culminated in a refined and replicable delineated definition for each identified nocturnal sleep-related variable. Ultimately based on 6318 participants from all 12 ISCOLE sites with valid total sleep episode time (TSET), we report average clock times for nocturnal sleep onset, offset and midpoint in addition to sleep period time, TSET and restful sleep efficiency (among other derived variables). RESULTS Nocturnal sleep onset occurred at 2218 hours and nocturnal sleep offset at 0707 hours. The mean midpoint was 0243 hours. The sleep period time of 529.6 min (8.8 h) was typically accumulated in a single episode, making the average TSET very similar in duration (529.0 min). The mean restful sleep efficiency ranged from 86.8% (based on absolute non-movement of 0 counts per minute) to 96.0% (based on relative non-movement of <100 counts per minute). CONCLUSIONS These variables extend the potential of field-based 24-h waist-worn accelerometry to distinguish and categorize the underlying robust patterns of movement/non-movement signals conveying magnitude, duration, frequency and periodicity during the nocturnal sleep period.
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Affiliation(s)
- C Tudor-Locke
- Department of Kinesiology, School of Public Health and Health Sciences, University of Massachusetts Amherst, Amherst, MA, USA; Pennington Biomedical Research Center, Baton Rouge, LA, USA
| | - E F Mire
- Pennington Biomedical Research Center , Baton Rouge, LA, USA
| | - T V Barreira
- Pennington Biomedical Research Center, Baton Rouge, LA, USA; Department of Exercise Science, Syracuse University, Syracuse, NY, USA
| | - J M Schuna
- Pennington Biomedical Research Center, Baton Rouge, LA, USA; Oregon State University, Corvallis, USA
| | - J-P Chaput
- Children's Hospital of Eastern Ontario Research Institute , Ottawa, Ontario, Canada
| | - M Fogelholm
- Department of Food and Environmental Sciences, University of Helsinki , Helsinki, Finland
| | - G Hu
- Pennington Biomedical Research Center , Baton Rouge, LA, USA
| | - A Kurpad
- St Johns Research Institute , Bangalore, India
| | - R Kuriyan
- St Johns Research Institute , Bangalore, India
| | - E V Lambert
- Department of Human Biology, Division of Exercise Science and Sports Medicine, Faculty of Health Sciences, University of Cape Town , Cape Town, South Africa
| | - C Maher
- Alliance for Research in Exercise Nutrition and Activity (ARENA), School of Health Sciences, University of South Australia , Adelaide, South Australia, Australia
| | - J Maia
- CIFI2D, Faculdade de Desporto, University of Porto , Porto, Portugal
| | - V Matsudo
- Centro de Estudos do Laboratório de Aptidão Física de São Caetano do Sul (CELAFISCS) , Sao Paulo, Brazil
| | - T Olds
- Alliance for Research in Exercise Nutrition and Activity (ARENA), School of Health Sciences, University of South Australia , Adelaide, South Australia, Australia
| | - V Onywera
- Department of Recreation Management and Exercise Science, Kenyatta University , Nairobi, Kenya
| | - O L Sarmiento
- School of Medicine, Universidad de los Andes , Bogota, Colombia
| | - M Standage
- Department for Health, University of Bath , Bath, UK
| | - M S Tremblay
- Children's Hospital of Eastern Ontario Research Institute , Ottawa, Ontario, Canada
| | - P Zhao
- Tianjin Women's and Children's Health Center , Tianjin, China
| | - T S Church
- Pennington Biomedical Research Center , Baton Rouge, LA, USA
| | - P T Katzmarzyk
- Pennington Biomedical Research Center , Baton Rouge, LA, USA
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7
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Zakrzewski JK, Gillison FB, Cumming S, Church TS, Katzmarzyk PT, Broyles ST, Champagne CM, Chaput JP, Denstel KD, Fogelholm M, Hu G, Kuriyan R, Kurpad A, Lambert EV, Maher C, Maia J, Matsudo V, Mire EF, Olds T, Onywera V, Sarmiento OL, Tremblay MS, Tudor-Locke C, Zhao P, Standage M. Associations between breakfast frequency and adiposity indicators in children from 12 countries. Int J Obes Suppl 2015; 5:S80-8. [PMID: 27152190 DOI: 10.1038/ijosup.2015.24] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
OBJECTIVES Reports of inverse associations between breakfast frequency and indices of obesity are predominantly based on samples of children from high-income countries with limited socioeconomic diversity. Using data from the International Study of Childhood Obesity, Lifestyle and the Environment (ISCOLE), the present study examined associations between breakfast frequency and adiposity in a sample of 9-11-year-old children from 12 countries representing a wide range of geographic and socio-cultural variability. METHODS Multilevel statistical models were used to examine associations between breakfast frequency (independent variable) and adiposity indicators (dependent variables: body mass index (BMI) z-score and body fat percentage (BF%)), adjusting for age, sex, and parental education in 6941 children from 12 ISCOLE study sites. Associations were also adjusted for moderate-to-vigorous physical activity, healthy and unhealthy dietary patterns and sleep time in a sub-sample (n=5710). Where interactions with site were significant, results were stratified by site. RESULTS Adjusted mean BMI z-score and BF% for frequent breakfast consumers were 0.45 and 20.5%, respectively. Frequent breakfast consumption was associated with lower BMI z-scores compared with occasional (P<0.0001, 95% confidence intervals (CI): 0.10-0.29) and rare (P<0.0001, 95% CI: 0.18-0.46) consumption, as well as lower BF% compared with occasional (P<0.0001, 95% CI: 0.86-1.99) and rare (P<0.0001, 95% CI: 1.07-2.76). Associations with BMI z-score varied by site (breakfast by site interaction; P=0.033): associations were non-significant in three sites (Australia, Finland and Kenya), and occasional (not rare) consumption was associated with higher BMI z-scores compared with frequent consumption in three sites (Canada, Portugal and South Africa). Sub-sample analyses adjusting for additional covariates showed similar associations between breakfast and adiposity indicators, but lacked site interactions. CONCLUSIONS In a multinational sample of children, more frequent breakfast consumption was associated with lower BMI z-scores and BF% compared with occasional and rare consumption. Associations were not consistent across all 12 countries. Further research is required to understand global differences in the observed associations.
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Affiliation(s)
- J K Zakrzewski
- Department of Sport Science and Physical Activity, University of Bedfordshire , Bedford, UK
| | - F B Gillison
- Department for Health, University of Bath , Bath, UK
| | - S Cumming
- Department for Health, University of Bath , Bath, UK
| | - T S Church
- Pennington Biomedical Research Center , Baton Rouge, LA, USA
| | - P T Katzmarzyk
- Pennington Biomedical Research Center , Baton Rouge, LA, USA
| | - S T Broyles
- Pennington Biomedical Research Center , Baton Rouge, LA, USA
| | - C M Champagne
- Pennington Biomedical Research Center , Baton Rouge, LA, USA
| | - J-P Chaput
- Children's Hospital of Eastern Ontario Research Institute , Ottawa, Ontario, Canada
| | - K D Denstel
- Pennington Biomedical Research Center , Baton Rouge, LA, USA
| | - M Fogelholm
- Department of Food and Environmental Sciences, University of Helsinki , Helsinki, Finland
| | - G Hu
- Pennington Biomedical Research Center , Baton Rouge, LA, USA
| | - R Kuriyan
- St Johns Research Institute , Bangalore, India
| | - A Kurpad
- St Johns Research Institute , Bangalore, India
| | - E V Lambert
- Department of Human Biology, Faculty of Health Sciences, Division of Exercise Science and Sports Medicine, University of Cape Town , Cape Town, South Africa
| | - C Maher
- Alliance for Research In Exercise Nutrition and Activity (ARENA), School of Health Sciences, University of South Australia , Adelaide, South Australia, Australia
| | - J Maia
- CIFI2D, Faculdade de Desporto, University of Porto , Porto, Portugal
| | - V Matsudo
- Centro de Estudos do Laboratório de Aptidão Física de São Caetano do Sul (CELAFISCS) , Sao Paulo, Brazil
| | - E F Mire
- Pennington Biomedical Research Center , Baton Rouge, LA, USA
| | - T Olds
- Alliance for Research In Exercise Nutrition and Activity (ARENA), School of Health Sciences, University of South Australia , Adelaide, South Australia, Australia
| | - V Onywera
- Department of Recreation Management and Exercise Science, Kenyatta University , Nairobi, Kenya
| | - O L Sarmiento
- School of Medicine Universidad de los Andes , Bogota, Colombia
| | - M S Tremblay
- Children's Hospital of Eastern Ontario Research Institute , Ottawa, Ontario, Canada
| | - C Tudor-Locke
- Pennington Biomedical Research Center, Baton Rouge, LA, USA; Department of Kinesiology, University of Massachusetts Amherst, Amherst, MA, USA
| | - P Zhao
- Tianjin Women's and Children's Health Center , Tianjin, China
| | - M Standage
- Department for Health, University of Bath , Bath, UK
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8
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Denstel KD, Broyles ST, Larouche R, Sarmiento OL, Barreira TV, Chaput JP, Church TS, Fogelholm M, Hu G, Kuriyan R, Kurpad A, Lambert EV, Maher C, Maia J, Matsudo V, Olds T, Onywera V, Standage M, Tremblay MS, Tudor-Locke C, Zhao P, Katzmarzyk PT. Active school transport and weekday physical activity in 9-11-year-old children from 12 countries. Int J Obes Suppl 2015; 5:S100-6. [PMID: 27152177 DOI: 10.1038/ijosup.2015.26] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
OBJECTIVES Active school transport (AST) may increase the time that children spend in physical activity (PA). This study examined relationships between AST and weekday moderate-to-vigorous physical activity (MVPA), light physical activity (LPA), sedentary time (SED) and total activity during naturally organized time periods (daily, before school, during school and after school) in a sample of children from 12 countries. METHODS The sample included 6224 children aged 9-11 years. PA and sedentary time were objectively measured using Actigraph accelerometers. AST was self-reported by participants. Multilevel generalized linear and logistic regression statistical models were used to determine associations between PA, SED and AST across and within study sites. RESULTS After adjustment for age, highest parental educational attainment, BMI z-score and accelerometer wear time, children who engaged in AST accumulated significantly more weekday MVPA during all studied time periods and significantly less time in LPA before school compared with children who used motorized transport to school. AST was unrelated to time spent in sedentary behaviors. Across all study sites, AST was associated with 6.0 min (95% confidence interval (CI): 4.7-7.3; P<0.0001) more of weekday MVPA; however, there was some evidence that this differed across study sites (P for interaction=0.06). Significant positive associations were identified within 7 of 12 study sites, with differences ranging from 4.6 min (95% CI: 0.3-8.9; P=0.04, in Canada) to 10.2 min (95% CI: 5.9-14.4; P<0.0001, in Brazil) more of daily MVPA among children who engaged in AST compared with motorized transport. CONCLUSIONS The present study demonstrated that AST was associated with children spending more time engaged in MVPA throughout the day and less time in LPA before school. AST represents a good behavioral target to increase levels of PA in children.
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Affiliation(s)
- K D Denstel
- Pennington Biomedical Research Center , Baton Rouge, LA, USA
| | - S T Broyles
- Pennington Biomedical Research Center , Baton Rouge, LA, USA
| | - R Larouche
- Children's Hospital of Eastern Ontario Research Institute , Ottawa, Ontario, Canada
| | - O L Sarmiento
- School of Medicine, Universidad de los Andes , Bogotá, Colombia
| | - T V Barreira
- Pennington Biomedical Research Center, Baton Rouge, LA, USA; Department of Exercise Science, University of Syracuse, Syracuse, NY, USA
| | - J-P Chaput
- Children's Hospital of Eastern Ontario Research Institute , Ottawa, Ontario, Canada
| | - T S Church
- Pennington Biomedical Research Center , Baton Rouge, LA, USA
| | - M Fogelholm
- Department of Food and Environmental Sciences, University of Helsinki , Helsinki, Finland
| | - G Hu
- Pennington Biomedical Research Center , Baton Rouge, LA, USA
| | - R Kuriyan
- St Johns Research Institute , Bangalore, India
| | - A Kurpad
- St Johns Research Institute , Bangalore, India
| | - E V Lambert
- Department of Human Biology, Faculty of Health Sciences, Division of Exercise Science and Sports Medicine, University of Cape Town , Cape Town, South Africa
| | - C Maher
- Alliance for Research in Exercise Nutrition and Activity (ARENA), School of Health Sciences, University of South Australia , Adelaide, South Australia, Australia
| | - J Maia
- CIFI2D, Faculdade de Desporto, University of Porto , Porto, Portugal
| | - V Matsudo
- Centro de Estudos do Laboratório de Aptidão Física de São Caetano do Sul (CELAFISCS) , São Paulo, Brazil
| | - T Olds
- Alliance for Research in Exercise Nutrition and Activity (ARENA), School of Health Sciences, University of South Australia , Adelaide, South Australia, Australia
| | - V Onywera
- Department of Recreation Management and Exercise Science, Kenyatta University , Nairobi, Kenya
| | - M Standage
- Department for Health, University of Bath , Bath, UK
| | - M S Tremblay
- Children's Hospital of Eastern Ontario Research Institute , Ottawa, Ontario, Canada
| | - C Tudor-Locke
- Pennington Biomedical Research Center, Baton Rouge, LA, USA; Department of Kinesiology, University of Massachusetts Amherst, Amherst, MA, USA
| | - P Zhao
- Tianjin Women's and Children's Health Center , Tianjin, China
| | - P T Katzmarzyk
- Pennington Biomedical Research Center , Baton Rouge, LA, USA
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9
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Sarmiento OL, Lemoine P, Gonzalez SA, Broyles ST, Denstel KD, Larouche R, Onywera V, Barreira TV, Chaput JP, Fogelholm M, Hu G, Kuriyan R, Kurpad A, Lambert EV, Maher C, Maia J, Matsudo V, Olds T, Standage M, Tremblay MS, Tudor-Locke C, Zhao P, Church TS, Katzmarzyk PT. Relationships between active school transport and adiposity indicators in school-age children from low-, middle- and high-income countries. Int J Obes Supp 2015; 5:S107-14. [PMID: 27152178 DOI: 10.1038/ijosup.2015.27] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
OBJECTIVES Within the global context of the nutrition and physical activity transition it is important to determine the relationship between adiposity and active school transport (AST) across different environmental and socio-cultural settings. The present study assessed the association between adiposity (that is, body mass index z-score (BMIz), obesity, percentage body fat (PBF), waist circumference) and AST in 12 country sites, in the International Study of Childhood Obesity, Lifestyle and the Environment (ISCOLE). METHODS The analytical sample included 6797 children aged 9-11 years. Adiposity indicators included, BMIz calculated using reference data from the World Health Organization, obesity (BMIz ⩾+2 s.d.), PBF measured using bioelectrical impedance and waist circumference. School travel mode was assessed by questionnaire and categorized as active travel versus motorized travel. Multilevel linear and non-linear models were used to estimate the magnitude of the associations between adiposity indicators and AST by country site and sex. RESULTS After adjusting for age, sex, parental education and motorized vehicle availability, children who reported AST were less likely to be obese (odds ratio=0.72, 95% confidence interval (0.60-0.87), P<0.001) and had a lower BMIz (-0.09, s.e.m.=0.04, P=0.013), PBF (least square means (LSM) 20.57 versus 21.23% difference -0.66, s.e.m.=0.22, P=0.002) and waist circumference (LSM 63.73 cm versus 64.63 cm difference -0.90, s.e.m.=0.26, P=0.001) compared with those who reported motorized travel. Overall, associations between obesity and AST did not differ by country (P=0.279) or by sex (P=0.571). CONCLUSIONS AST was associated with lower measures of adiposity in this multinational sample of children. Such findings could inform global efforts to prevent obesity among school-age children.
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Affiliation(s)
- O L Sarmiento
- Department of Public Health, School of Medicine, Universidad de los Andes , Bogotá, Colombia
| | - P Lemoine
- Department of Public Health, School of Medicine, Universidad de los Andes, Bogotá, Colombia; Department of Industrial Engineering, Faculty of Engineering, CeiBA Complex Systems Research Center, Universidad de los Andes, Bogotá, Colombia
| | - S A Gonzalez
- Department of Public Health, School of Medicine, Universidad de los Andes , Bogotá, Colombia
| | - S T Broyles
- Pennington Biomedical Research Center , Baton Rouge, LA, USA
| | - K D Denstel
- Pennington Biomedical Research Center , Baton Rouge, LA, USA
| | - R Larouche
- Children's Hospital of Eastern Ontario Research Institute , Ottawa, Ontario, Canada
| | - V Onywera
- Department of Recreation Management and Exercise Science, Kenyatta University , Nairobi, Kenya
| | - T V Barreira
- Pennington Biomedical Research Center, Baton Rouge, LA, USA; Department of Exercise Science, University of Syracuse, Syracuse, NY, USA
| | - J-P Chaput
- Children's Hospital of Eastern Ontario Research Institute , Ottawa, Ontario, Canada
| | - M Fogelholm
- Department of Food and Environmental Sciences, University of Helsinki , Helsinki, Finland
| | - G Hu
- Pennington Biomedical Research Center , Baton Rouge, LA, USA
| | - R Kuriyan
- St John's Research Institute , Bangalore, India
| | - A Kurpad
- St John's Research Institute , Bangalore, India
| | - E V Lambert
- Department of Human Biology, Faculty of Health Sciences, Division of Exercise Science and Sports Medicine, University of Cape Town , Cape Town, South Africa
| | - C Maher
- Alliance for Research In Exercise Nutrition and Activity (ARENA), School of Health Sciences, University of South Australia , Adelaide, South Australia, Australia
| | - J Maia
- CIFI2D, Faculdade de Desporto, University of Porto , Porto, Portugal
| | - V Matsudo
- Centro de Estudos do Laboratório de Aptidão Física de São Caetano do Sul , Sao Paulo, Brazil
| | - T Olds
- Alliance for Research In Exercise Nutrition and Activity (ARENA), School of Health Sciences, University of South Australia , Adelaide, South Australia, Australia
| | - M Standage
- Department of Health, University of Bath , Bath, UK
| | - M S Tremblay
- Children's Hospital of Eastern Ontario Research Institute , Ottawa, Ontario, Canada
| | - C Tudor-Locke
- Pennington Biomedical Research Center, Baton Rouge, LA, USA; Department of Kinesiology, University of Massachusetts Amherst, Amherst, MA, USA
| | - P Zhao
- Tianjin Women's and Children's Health Center , Tianjin, China
| | - T S Church
- Pennington Biomedical Research Center , Baton Rouge, LA, USA
| | - P T Katzmarzyk
- Pennington Biomedical Research Center , Baton Rouge, LA, USA
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10
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Qiao Y, Ma J, Wang Y, Li W, Katzmarzyk PT, Chaput JP, Fogelholm M, Johnson WD, Kuriyan R, Kurpad A, Lambert EV, Maher C, Maia J, Matsudo V, Olds T, Onywera V, Sarmiento OL, Standage M, Tremblay MS, Tudor-Locke C, Church TS, Zhao P, Hu G. Birth weight and childhood obesity: a 12-country study. Int J Obes Suppl 2015; 5:S74-9. [PMID: 27152189 PMCID: PMC4850624 DOI: 10.1038/ijosup.2015.23] [Citation(s) in RCA: 79] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
OBJECTIVES Few studies have investigated the association between the full range of birth weight and the risk of childhood obesity in high-, middle- and low-income countries. The aim of the present study is to assess the association between different levels of birth weight and the risk of obesity among children aged 9-11 years in 12 countries. METHODS A multinational, cross-sectional study of 5141 children aged 9-11 years was conducted in 12 countries. Height and weight were obtained using standardized methods. Time spent in moderate-to-vigorous physical activity (MVPA), sedentary and sleeping were objectively measured using 24-h, waist-worn accelerometer (Actigraph GT3X+) monitored for 7 days. Birth weight and other factors (regions, parental education, maternal history of gestational diabetes, children age, gender, breast feeding, gestational age, unhealthy diet scores and healthy diet scores) were collected by parental and children's questionnaires. Multilevel modeling was used to account for the nested nature of the data. RESULTS The overall prevalence of obesity (BMI z-score>+2 s.d.) was 15.4% for boys and 10.0% for girls. There was a positive association between birth weight and BMI z-scores. The multivariable-adjusted odds ratios (ORs) of childhood obesity were significantly higher among children whose birth weights were 3500-3999 g (OR 1.45; 95% confidence interval (CI): 1.10-1.92), and >4000 g (OR 2.08; 95% CI: 1.47-2.93), compared with the reference group (2500-2999 g). The positive association between birth weight and the odds of childhood obesity was seen in girls, whereas a U-shaped association appeared in boys. CONCLUSIONS High levels of birth weight, defined as birth weight ⩾3500 g, were associated with increased odds of obesity among 9-11-year-old children in 12 countries. However, sex differences in the association between birth weight and the risk of obesity need to be considered when planning interventions to reduce childhood obesity.
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Affiliation(s)
- Y Qiao
- Tianjin Women's and Children's Health Center, Tianjin, China
- Pennington Biomedical Research Center, Baton Rouge, LA, USA
| | - J Ma
- Tianjin Women's and Children's Health Center, Tianjin, China
| | - Y Wang
- Tianjin Women's and Children's Health Center, Tianjin, China
| | - W Li
- Tianjin Women's and Children's Health Center, Tianjin, China
| | - P T Katzmarzyk
- Pennington Biomedical Research Center, Baton Rouge, LA, USA
| | - J-P Chaput
- Children's Hospital of Eastern Ontario Research Institute, Ottawa, Ontario, Canada
| | - M Fogelholm
- Department of Food and Environmental Sciences, University of Helsinki, Helsinki, Finland
| | - W D Johnson
- Pennington Biomedical Research Center, Baton Rouge, LA, USA
| | - R Kuriyan
- St Johns Research Institute, Bangalore, India
| | - A Kurpad
- St Johns Research Institute, Bangalore, India
| | - E V Lambert
- Department of Human Biology, Faculty of Health Sciences, Division of Exercise Science and Sports Medicine, University of Cape Town, Cape Town, South Africa
| | - C Maher
- Alliance for Research in Exercise Nutrition and Activity (ARENA), School of Health Sciences, University of South Australia, Adelaide, South Australia, Australia
| | - J Maia
- CIFI2D, Faculdade de Desporto, University of Porto, Porto, Portugal
| | - V Matsudo
- Centro de Estudos do Laboratório de Aptidão Física de São Caetano do Sul (CELAFISCS), Sao Paulo, Brazil
| | - T Olds
- Alliance for Research in Exercise Nutrition and Activity (ARENA), School of Health Sciences, University of South Australia, Adelaide, South Australia, Australia
| | - V Onywera
- Department of Recreation Management and Exercise Science, Kenyatta University, Nairobi, Kenya
| | - O L Sarmiento
- School of Medicine, Universidad de los Andes, Bogota, Colombia
| | | | - M S Tremblay
- Children's Hospital of Eastern Ontario Research Institute, Ottawa, Ontario, Canada
| | - C Tudor-Locke
- Pennington Biomedical Research Center, Baton Rouge, LA, USA
- Department of Kinesiology, University of Massachusetts Amherst, Amherst, MA, USA
| | - T S Church
- Pennington Biomedical Research Center, Baton Rouge, LA, USA
| | - P Zhao
- Tianjin Women's and Children's Health Center, Tianjin, China
| | - G Hu
- Pennington Biomedical Research Center, Baton Rouge, LA, USA
| | - for the ISCOLE Research Group
- Tianjin Women's and Children's Health Center, Tianjin, China
- Pennington Biomedical Research Center, Baton Rouge, LA, USA
- Children's Hospital of Eastern Ontario Research Institute, Ottawa, Ontario, Canada
- Department of Food and Environmental Sciences, University of Helsinki, Helsinki, Finland
- St Johns Research Institute, Bangalore, India
- Department of Human Biology, Faculty of Health Sciences, Division of Exercise Science and Sports Medicine, University of Cape Town, Cape Town, South Africa
- Alliance for Research in Exercise Nutrition and Activity (ARENA), School of Health Sciences, University of South Australia, Adelaide, South Australia, Australia
- CIFI2D, Faculdade de Desporto, University of Porto, Porto, Portugal
- Centro de Estudos do Laboratório de Aptidão Física de São Caetano do Sul (CELAFISCS), Sao Paulo, Brazil
- Department of Recreation Management and Exercise Science, Kenyatta University, Nairobi, Kenya
- School of Medicine, Universidad de los Andes, Bogota, Colombia
- University of Bath, Bath, UK
- Department of Kinesiology, University of Massachusetts Amherst, Amherst, MA, USA
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11
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LeBlanc AG, Katzmarzyk PT, Barreira TV, Broyles ST, Chaput JP, Church TS, Fogelholm M, Harrington DM, Hu G, Kuriyan R, Kurpad A, Lambert EV, Maher C, Maia J, Matsudo V, Olds T, Onywera V, Sarmiento OL, Standage M, Tudor-Locke C, Zhao P, Tremblay MS. Are participant characteristics from ISCOLE study sites comparable to the rest of their country? Int J Obes Suppl 2015; 5:S9-S16. [PMID: 27152192 PMCID: PMC4850614 DOI: 10.1038/ijosup.2015.13] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
OBJECTIVES The International Study of Childhood Obesity, Lifestyle and the Environment (ISCOLE) provides robust, multi-national information on physical activity, diet and weight status in 9-11-year-old children around the world. The purpose of this analysis was to examine the similarities and differences between participant characteristics from ISCOLE sites and data from nationally representative surveys from ISCOLE countries (Australia, Brazil, Canada, China, Colombia, Finland, Kenya, India, Portugal, South Africa, the United Kingdom and the United States). METHODS Distributions of characteristics were assessed within each ISCOLE country-level database, and compared with published data from national or regional surveys, where available. Variables of comparison were identified a priori and included body mass index (BMI), physical activity (accelerometer-determined steps per day) and screen time (child-report). RESULTS Of 12 countries, data on weight status (BMI) were available in 8 countries, data on measured physical activity (steps per day) were available in 5 countries and data on self-reported screen time were available in 9 countries. The five ISCOLE countries that were part of the Health Behaviour in School-aged Children Survey (that is, Canada, Finland, Portugal, the United Kingdom (England) and the United States) also provided comparable data on self-reported physical activity. Available country-specific data often used different measurement tools or cut-points, making direct comparisons difficult. Where possible, ISCOLE data were re-analyzed to match country-level data, but this step limited between-country comparisons. CONCLUSIONS From the analyses performed, the ISCOLE data do not seem to be systematically biased; however, owing to limitations in data availability, data from ISCOLE should be used with appropriate caution when planning country-level population health interventions. This work highlights the need for harmonized measurement tools around the world while accounting for culturally specific characteristics, and the need for collaboration across study centers and research groups.
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Affiliation(s)
- A G LeBlanc
- Healthy Active Living and Obesity Research Group, Children's Hospital of Eastern Ontario Research Institute, Ottawa, Ontario, Canada
- University of Ottawa, Ottawa, Ontario, Canada
| | - P T Katzmarzyk
- Pennington Biomedical Research Center, Baton Rouge, LA, USA
| | - T V Barreira
- Pennington Biomedical Research Center, Baton Rouge, LA, USA
- University of Syracuse, Syracuse, New York, USA
| | - S T Broyles
- Pennington Biomedical Research Center, Baton Rouge, LA, USA
| | - J-P Chaput
- Healthy Active Living and Obesity Research Group, Children's Hospital of Eastern Ontario Research Institute, Ottawa, Ontario, Canada
- University of Ottawa, Ottawa, Ontario, Canada
| | - T S Church
- Pennington Biomedical Research Center, Baton Rouge, LA, USA
| | - M Fogelholm
- Department of Food and Environmental Sciences, University of Helsinki, Helsinki, Finland
| | | | - G Hu
- Pennington Biomedical Research Center, Baton Rouge, LA, USA
| | - R Kuriyan
- St Johns Research Institute, Bangalore, India
| | - A Kurpad
- St Johns Research Institute, Bangalore, India
| | - E V Lambert
- Department of Human Biology, Division of Exercise Science and Sports Medicine, Faculty of Health Sciences, University of Cape Town, Cape Town, South Africa
| | - C Maher
- Alliance for Research in Exercise Nutrition and Activity (ARENA), School of Health Sciences, University of South Australia, Adelaide, South Australia, Australia
| | - J Maia
- CIFI2D, Faculdade de Desporto, University of Porto, Porto, Portugal
| | - V Matsudo
- Centro de Estudos do Laboratório de Aptidão Física de São Caetano do Sul (CELAFISCS), Sao Paulo, Brazil
| | - T Olds
- Alliance for Research in Exercise Nutrition and Activity (ARENA), School of Health Sciences, University of South Australia, Adelaide, South Australia, Australia
| | - V Onywera
- Department of Recreation Management and Exercise Science, Kenyatta University, Nairobi, Kenya
| | - O L Sarmiento
- School of Medicine, Universidad de los Andes, Bogota, Colombia
| | - M Standage
- Department for Health, University of Bath, Bath, UK
| | - C Tudor-Locke
- Pennington Biomedical Research Center, Baton Rouge, LA, USA
- Department of Kinesiology, University of Massachusetts Amherst, Amherst, MA, USA
| | - P Zhao
- Department of Kinesiology, University of Massachusetts Amherst, Amherst, MA, USA
| | - M S Tremblay
- Healthy Active Living and Obesity Research Group, Children's Hospital of Eastern Ontario Research Institute, Ottawa, Ontario, Canada
| | - for the ISCOLE Research Group
- Healthy Active Living and Obesity Research Group, Children's Hospital of Eastern Ontario Research Institute, Ottawa, Ontario, Canada
- University of Ottawa, Ottawa, Ontario, Canada
- Pennington Biomedical Research Center, Baton Rouge, LA, USA
- University of Syracuse, Syracuse, New York, USA
- Department of Food and Environmental Sciences, University of Helsinki, Helsinki, Finland
- University of Leicester, Leicester, UK
- St Johns Research Institute, Bangalore, India
- Department of Human Biology, Division of Exercise Science and Sports Medicine, Faculty of Health Sciences, University of Cape Town, Cape Town, South Africa
- Alliance for Research in Exercise Nutrition and Activity (ARENA), School of Health Sciences, University of South Australia, Adelaide, South Australia, Australia
- CIFI2D, Faculdade de Desporto, University of Porto, Porto, Portugal
- Centro de Estudos do Laboratório de Aptidão Física de São Caetano do Sul (CELAFISCS), Sao Paulo, Brazil
- Department of Recreation Management and Exercise Science, Kenyatta University, Nairobi, Kenya
- School of Medicine, Universidad de los Andes, Bogota, Colombia
- Department for Health, University of Bath, Bath, UK
- Department of Kinesiology, University of Massachusetts Amherst, Amherst, MA, USA
- Tianjin Women's and Children's Health Center, Tianjin, China
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12
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Tomé D, Jahoor F, Kurpad A, Michaelsen KF, Pencharz P, Slater C, Weisell R. Current issues in determining dietary protein quality and metabolic utilization. Eur J Clin Nutr 2014; 68:537-8. [PMID: 24801502 DOI: 10.1038/ejcn.2014.55] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- D Tomé
- AgroParisTech, UMR0914 Nutrition Physiology and Ingestive Behavior, Paris, France
| | - F Jahoor
- Children's Nutrition Research Center (CNRC), Agricultural Research Service (ARS), US Department of Agriculture (USDA), Houston, TX, USA
| | - A Kurpad
- St. John's National Academy of Health Sciences, St. John's Medical College, Bangalore, Karnataka, India
| | - K F Michaelsen
- Faculty of Science, Department of Nutrition, Exercise and Sports, University of Copenhagen, Frederiksberg C, Denmark
| | - P Pencharz
- University of Toronto, The Hospital for Sick Children, Toronto, Ontario, Canada
| | - C Slater
- IAEA, Nutritional and Health-related Environmental Studies Section, Division of Human Health, Vienna, Austria
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13
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Affiliation(s)
- S Khandelwal
- Public Health Foundation of India, New Delhi, India
| | - A Kurpad
- Nutrition Division, St John's Medical College, Bangalore, India
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14
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Pencharz P, Jahoor F, Kurpad A, Michaelsen KF, Slater C, Tomé D, Weisell R. Current issues in determining dietary protein and amino-acid requirements. Eur J Clin Nutr 2014; 68:285-6. [PMID: 24424080 DOI: 10.1038/ejcn.2013.297] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Pregnancy and the first two years of life are periods of rapid growth and yet the knowledge of requirements for protein and dietary indispensable amino acids is very limited. The development of carbon oxidation methods opens the way to studies that should fill these important gaps in knowledge.
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Affiliation(s)
- P Pencharz
- Department of Gastroenterology, Nutrition and Hepatology, University of Toronto, The Hospital for Sick Children, Toronto, Ontario, Canada
| | - F Jahoor
- Children's Nutrition Research Center, Agricultural Research Service, US Department of Agriculture, Houston, TX, USA
| | - A Kurpad
- St John's Medical College, Bangalore, Karnataka, India
| | - K F Michaelsen
- Department of Nutrition, Exercise and Sports, Faculty of Science, University of Copenhagen, Frederiksberg C, Denmark
| | - C Slater
- IAEA, Nutritional and Health-related Environmental Studies Section, Division of Human Health, Vienna, Austria
| | - D Tomé
- AgroParisTech, UMR0914 Nutrition Physiology and Ingestive Behavior, Paris, France
| | - R Weisell
- Viale delle Ginestre 8, Ariccia (RM), Italy
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15
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Deshpande CS, Rakhshani A, Rakshani A, Nagarathna R, Ganpat TS, Kurpad A, Maskar R, Nagendra HR, Sudheer DC, Abbas R, Raghuram N, Anura K, Rita M, Ramarao N. Yoga for high-risk pregnancy: a randomized controlled trial. Ann Med Health Sci Res 2013; 3:341-4. [PMID: 24116310 PMCID: PMC3793436 DOI: 10.4103/2141-9248.117933] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022] Open
Abstract
Background: Improvements in technology have increased the chances of survival for the micro-premature infant and the very low birth-weight infant but have significantly increased the financial burden of health care organizations. This economic burden has a significant impact on third-party payers and on society in general. Aim: The study was designed to assess yoga therapy (YT) module on maternal stress level in high risk pregnancy. Subjects and Methods: In the present study, sixty-eight pregnant women (38 in the control group with standard antenatal care and 30 in the YT group) with 27.2 (5.2) years of mean age recruited from the outpatient services of medical college and hospital in Bangalore, South India, were participated. The study was a single-blind randomized controlled clinical trial. Perceived stress scale (PSS) was measured during the 12th, 20th, and 28th weeks of pregnancy. SPSS version 16.0 (Chicago, IL, USA) was used for all data analysis. When the data were found to be normally distributed, the RMANOVA were used to assess the PSS scores between the yoga and control groups. Significant values were set at P < 0.05. Results: There was a significant difference in the PSS level of the YT group with significantly reduced scores at the second follow-up (28th week of pregnancy) compared to the control group (P = 0.02). Women who took part in the YT module reported significantly fewer pregnancy discomforts decrease in PSS (P = 0.02) than the control group where the stress level was increased (RMANOVA test using SPSS-16). Conclusion: The present study suggests that the YT module can decrease the stress level during high-risk pregnancy complications. Thus, practicing YT during high-risk pregnancy is not only a cost-effective option but also a feasible and safe option. Additional well-designed studies are needed before a strong recommendation can be made.
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Affiliation(s)
- C S Deshpande
- Yoga and Life Sciences, S-VYASA University, Bangalore, India
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Katzmarzyk P, Church T, Chaput J, Hu G, Kurpad A, Lambert V, Maia J, Matsudo V, Olds T, Onywera V, Sarmiento O, Standage M, Tremblay M, Tudor-Locke C, Zhao P. The international study of childhood obesity, lifestyle and the environment. J Sci Med Sport 2012. [DOI: 10.1016/j.jsams.2012.11.107] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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17
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Kehoe SH, Krishnaveni GV, Lubree HG, Wills AK, Guntupalli AM, Veena SR, Bhat DS, Kishore R, Fall CHD, Yajnik CS, Kurpad A. Prediction of body-fat percentage from skinfold and bio-impedance measurements in Indian school children. Eur J Clin Nutr 2011; 65:1263-70. [PMID: 21731039 PMCID: PMC3242049 DOI: 10.1038/ejcn.2011.119] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2010] [Revised: 05/10/2011] [Accepted: 05/17/2011] [Indexed: 11/08/2022]
Abstract
BACKGROUND/OBJECTIVES Few equations for calculating body-fat percentage (BF%) from field methods have been developed in South-Asian children. The objective of this study was to assess agreement between BF% derived from primary reference methods and that from skinfold equations and bio-impedance analysis (BIA) in Indian children. SUBJECTS/METHODS We measured BF% in two groups of Indian children. In Pune, 570 rural children aged 6-8 years underwent dual-energy X-ray absorptiometry (DXA) scans. In Mysore (18)O in doubly labeled water was administered to 59 urban children aged 7-9 years. We conducted BIA at 50 kHz and anthropometry, including sub-scapular and triceps skinfold thicknesses. We used the published equations of Wickramasinghe, Shaikh, Slaughter and Dezenburg to calculate BF% from anthropometric data and the manufacturer's equation for BIA measurements. We assessed agreement with values derived from DXA and doubly labeled water using Bland-Altman analysis. RESULTS Children were light and thin on average compared with international standards. There was poor agreement between the reference BF% values and those from all equations. Assumptions for Bland-Altman analysis were not met for Wickramasinghe, Shaikh and Slaughter equations. The Dezenberg equations under-predicted BF% for most children (mean difference in Pune -13.4, LOA -22.7, -4.0 and in Mysore -7.9, LOA (-13.7 and -2.2). The mean bias for the BIA equation in Pune was +5.0% and in Mysore +1.95%, and the limits of agreement were wide; -5.0, 15.0 and -7.8, 11.7 respectively. CONCLUSIONS Currently available skinfold equations do not accurately predict BF% in Indian children. We recommend development of BIA equations in this population using a four-compartment model.
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Affiliation(s)
- S H Kehoe
- Medical Research Council-Lifecourse Epidemiology Unit, University of Southampton, Southampton General Hospital, Southampton, UK.
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Sullivan R, Kinra S, Ekelund U, Bharathi AV, Collier T, Vaz M, Kurpad A, Reddy KS, Prabhakaran D, Kuper H, Ebrahim S. P2-295 Socio-demographic patterns of physical activity in India: a cross sectional study. Br J Soc Med 2011. [DOI: 10.1136/jech.2011.142976k.28] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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Shet A, Rajagopalan N, Rameshkumar E, Dinakar C, Indumathi C, Muthayya S, Kurpad A. Growth Retardation and Anemia Among HIV-Infected Children in South India: Need for Targeted Nutritional Interventions. Int J Infect Dis 2008. [DOI: 10.1016/j.ijid.2008.05.1361] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
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Sgaier SK, Jha P, Mony P, Kurpad A, Lakshmi V, Kumar R, Ganguly NK. PUBLIC HEALTH: Biobanks in Developing Countries: Needs and Feasibility. Science 2007; 318:1074-5. [DOI: 10.1126/science.1149157] [Citation(s) in RCA: 44] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
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21
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Rosetta L, Kurpad A, Mascie-Taylor CGN, Shetty PS. Total energy expenditure (H218O), physical activity level and milk output of lactating rural Bangladeshi tea workers and nontea workers. Eur J Clin Nutr 2005; 59:632-8. [PMID: 15867941 DOI: 10.1038/sj.ejcn.1602134] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
OBJECTIVE To assess the total daily energy expenditure (TDEE), milk output and physical activity level (PAL) of chronically malnourished lactating women using the doubly labelled water method (DLW). DESIGN Prospective, longitudinal study designed to assess the extent of malnutrition and energetics of lactating tea workers and nontea workers. SETTING North-east Bangladesh on women working and living in the same tea estates. SUBJECTS Of an original cohort of 150 lactating women, 30 were selected to participate in this study when they were at about 12 months postpartum. One mother subsequently dropped out. INTERVENTIONS On day 1 each women provided a urine sample, was administered a dose of DLW and 6 h later provided another sample. Further urine samples were collected for 21 subsequent days. In addition, every 5 days the mother provided a milk sample and at the same time her baby provided a urine sample. RESULTS Mean (s.d.) BMI was 17.4 (1.63). Mean TDEE and PAL were significantly higher in workers than nonworkers (8.42 (1.38) and 6.83 (2.09) MJ/day, P = 0.02 and 1.92 (0.34) and 1.59 (0.44), P = 0.03, respectively). Mean milk output was similar in the two groups (672 (180) ml and 749 (189) ml in workers and nonworkers, respectively). CONCLUSIONS Based on international BMI cutoffs, 79% of mothers were suffering from some degree of chronic energy deficiency. A total of 35% of workers and 17% of nonworkers were engaged in strenuous physical activity. The mean milk output of both workers and nonworkers was not different and was high especially as most of the mothers were about 12 months postpartum. No relationship was found between menses return and any of the variables studied. SPONSORSHIP World Health Organization, Nestle Foundation, UNICEF.
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Affiliation(s)
- L Rosetta
- Centre National de la Recherche Scientifique (CNRS) UPR 2147, Paris, France.
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22
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Beaufrère B, Castaneda C, de Groot L, Kurpad A, Roberts S, Tessari P. Report of the IDECG Working Group on energy and macronutrient metabolism and requirements of the elderly. Eur J Clin Nutr 2000; 54 Suppl 3:S162-3. [PMID: 11041090 DOI: 10.1038/sj.ejcn.1601040] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- B Beaufrère
- Laboratoire de Nutrition Humaine, Université Clermont Auvergne, Centre de Recherche en Nutrition Humaine, Clermont-Ferrand, France.
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23
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Haggarty P, Shetty P, Thangam S, Kumar S, Kurpad A, Ashton J, Milne E, Earl C. Free and esterified fatty acid and cholesterol synthesis in adult males and its effect on the doubly-labelled water method. Br J Nutr 2000; 83:227-34. [PMID: 10884710 DOI: 10.1017/s0007114500000295] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
The purpose of the present study was to estimate whole-body fatty acid and cholesterol synthesis in weight-stable adults and to determine the likely effect on the doubly-labelled water (DLW) method for measuring energy expenditure. Synthesis was measured by 2H incorporation over 14 d in six adult males in approximate energy balance following noradrenaline infusion to maximize mobilization of free fatty acid from adipose tissue. The inter-individual variation in synthesis rates was large and in one subject the proportion of free fatty acid synthesized was ten times that of the mean of the rest of the group; the fasting concentration of esterified fatty acid in this subject was five times that of the rest of the group indicating likely violation of the assumptions underlying the calculation of whole-body synthesis. After 14 d of labelling in the other five subjects, 0.9 (SEM 0.3)% of the circulating free fatty acid, 9.3 (SEM 3.0)% of the esterified fatty acid, 14.6 (SEM 2.4)% of the free cholesterol and 28.3 (SEM 3.7)% of esterified cholesterol had been synthesized de novo. A high rate of synthesis correlated with a low pre-dose 2H abundance both within and between lipid classes suggesting that natural 2H abundance variations in some lipid classes may be used to determine their metabolic origin. Whole-body synthetic rates were 8 g/d for fatty acid and 0.3-0.5 g/d for cholesterol. These values correspond to very small errors on DLW-derived estimates of CO2 production; -2.5 litres/d for fatty acid and -0.1 to -0.2 litres/d for cholesterol. These results, obtained in subjects typically consuming a diet with a lower fat and cholesterol content that the typical Western diet, suggest that the DLW method is unlikely to be affected by fatty acid and cholesterol synthesis in subjects in energy balance consuming a typical Western diet.
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Affiliation(s)
- P Haggarty
- Rowett Research Institute, Bucksburn, Aberdeen, UK.
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24
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Kurpad A, Khan K, Macdonald I, Elia M. Haemodynamic responses in muscle and adipose tissue and whole body metabolic responses during norepinephrine infusions in man. J Auton Nerv Syst 1995; 54:163-70. [PMID: 7499728 DOI: 10.1016/0165-1838(95)00009-m] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
Circulatory metabolic and cardiovascular responses to 1-h-long infusions of norepinephrine (NE) (approx. 0.2 and 0.4 nmol/kg body weight per min) were measured on two separate occasions in six subjects. The infusions increased circulating NE concentrations 6- and 13-fold, respectively. Blood flow to adipose tissue, measured with the 133Xe clearance technique, increased from a basal value of about 3 ml/100 g per min, to about twice this value at 60 min with both doses of NE. In contrast muscle blood flow was unaffected. The higher dose of NE produced significant increments at 60 min in whole body oxygen consumption (approx. 9%), and circulating concentrations of glucose (approx. 18%), non-esterified fatty acids (approx. 200%) and glycerol (approx. 32%) which were greater than those observed with the low-dose infusion. Changes in blood pressure, pulse and CO2 exchange were observed within 5-10 min after the start of the infusion, whilst changes in adipose tissue blood flow were observed after 15-30 min. It is concluded that in humans (i) a dose of NE as low as 0.2 nmol/kg per min is sufficient to evoke both circulatory and metabolic responses; (ii) the pattern in the adipose tissue blood flow response to NE may help explain some of the conflicting reports about the haemodynamic effects of this hormone in adipose tissue; and (iii) blood flow and vascular resistance in different tissues may be affected in different ways by norepinephrine.
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Affiliation(s)
- A Kurpad
- Dunn Clinical Nutrition Centre, Cambridge, UK
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Kurpad A, Khan K, Calder AG, Coppack S, Frayn K, Macdonald I, Elia M. Effect of noradrenaline on glycerol turnover and lipolysis in the whole body and subcutaneous adipose tissue in humans in vivo. Clin Sci (Lond) 1994; 86:177-84. [PMID: 8143428 DOI: 10.1042/cs0860177] [Citation(s) in RCA: 46] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
1. The effect of infusion of noradrenaline (0.42 mumol min-1 kg-1) on the exchange of nonesterified fatty acids, glycerol and other metabolites across subcutaneous abdominal adipose tissue was investigated in five healthy subjects using an arteriovenous catheterization technique and measurement of adipose tissue blood flow using the 133Xe clearance technique. At the same time, the net rate of fat oxidation in the whole body was assessed by indirect calorimetry, and the turnover of glycerol in the whole body and in subcutaneous adipose tissue was estimated using [5-2H]glycerol, which was administered as a primed constant infusion for 1 h before (basal turnover) noradrenaline administration and continued during the 1 h of noradrenaline infusion. 2. The noradrenaline infusion increased the plasma noradrenaline concentration from a basal value of 0.9 +/- 0.1 to 12.6 +/- 1.2 nmol/(mean +/- SEM) at 60 min. It also increased the arterialized concentration of glycerol by 50% (basal value 81 +/- 11 mumol/l-1) and that of plasma non-esterified fatty acids three-fold (basal value 357 +/- 86 mumol/l). 3. Noradrenaline increased the net release of glycerol by adipose tissue three-fold and that of non-esterified fatty acids three- to four-fold. Although the ratio of non-esterified fatty acid to glycerol release by adipose tissue increased in all subjects from a mean value of 2.7 in the basal period to 3.6 and 3.9 at 50 and 60 min of the noradrenaline infusion, respectively (P < 0.02), at no time point did the ratio differ significantly from 3.0.(ABSTRACT TRUNCATED AT 250 WORDS)
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Affiliation(s)
- A Kurpad
- Dunn Clinical Nutrition Centre, Cambridge, U.K
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Abstract
1. An investigation was carried out in five healthy lean adults to assess whether forearm and calf plethysmography largely reflect muscle blood flow as measured by 133Xe and whether there is substantial variability in the blood flow to muscles located at different sites in the body. 2. Blood flow to forearm and calf flexors and extensors, biceps, triceps and quadriceps was assessed using the 133Xe clearance technique. Blood flow to forearm skin and subcutaneous adipose tissue was also measured using the 133Xe clearance technique, whereas blood flow to the forearm and calf was measured using strain gauge plethysmography. 3. The mean blood flow to different muscles ranged from 1.4 +/- 0.6 (gastrocnemius) to 1.8 +/- 0.7 (forearm extensor) ml min-1 100 g-1 muscle (1.4 +/- 0.6 and 1.9 +/- 0.8 ml min-1 100 ml-1 muscle, respectively) but there were no significant differences between them. Forearm and calf blood flows (2.7 +/- 0.3 and 3.0 +/- 0.7 ml min-1 100 ml-1 limb tissue, respectively) were about 50% to more than 100% greater (P < 0.025) than blood flow to the muscles within them (1.7 +/- 0.5 and 1.4 +/- 0.5 ml min-1 100 g-1 muscle, respectively, or 1.8 +/- 0.6 and 1.5 +/- 0.5 ml min-1 100 ml-1 muscle, respectively). In contrast, the blood flows to 100 g of forearm skin (9.1 +/- 2.6 ml min-1 100 g-1) and adipose tissue (3.8 +/- 1.1 ml min-1 100 g-1) were higher than the blood flow to 100 g of forearm (P < 0.01 and not significant, respectively).(ABSTRACT TRUNCATED AT 250 WORDS)
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Affiliation(s)
- M Elia
- Dunn Clinical Nutrition Centre, University of Cambridge, U.K
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27
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Elia M, Khan K, Calder G, Kurpad A. Glycerol exchange across the human forearm assessed by a combination of tracer and arteriovenous exchange techniques. Clin Sci (Lond) 1993; 84:99-104. [PMID: 8382142 DOI: 10.1042/cs0840099] [Citation(s) in RCA: 39] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
1. Whole-body kinetics and regional exchange of glycerol across forearm muscle were assessed in eight lean subjects by a combination of a tracer method (infusion of [2H5]glycerol) and arteriovenous catheterization. 2. During an apparent steady state, the enrichment of glycerol in deep venous blood from the muscle bed of the forearm was about half (4.40 +/- 1.72 atom per cent excess) that observed in arterialized blood (8.41 +/- 4.30 atom per cent excess). Under the same conditions, the circulating concentrations of glycerol in arterialized (91 +/- 24 mumol/l) and venous (87 +/- 32 mumol/l) blood were similar. 3. In a further group of 37 subjects it was found that about half had a positive arteriovenous concentration difference and the other had half a negative arteriovenous concentration difference (mean -1.6 +/- 11.9 mumol/l; range -25 to +22 mumol/l). 4. These results suggest: (a) that human muscle does not always release glycerol and may take it up; (b) that there is substantial isotopic exchange of glycerol across forearm muscle tissue, which is not reflected by the net exchange of glycerol; this could be due to slow equilibrium of enriched glycerol from the circulation, with unenriched free glycerol in the muscle pool, or due to the simultaneous metabolic utilization of enriched glycerol and metabolic production of unenriched glycerol; (c) that the estimation of glycerol flux rates is strongly dependent on whether the blood is arterialized or deep venous.
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Affiliation(s)
- M Elia
- Dunn Clinical Nutrition Centre, Cambridge, U.K
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