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1.
Eur J Nutr ; 2021 Nov 27.
Artigo em Inglês | MEDLINE | ID: mdl-34837523

RESUMO

AIMS: Few studies have examined the secular trend of the energy intake distribution, and its effect on future risk of hyperglycemia. This study aims to describe trajectories of energy intake distribution over 12 years and relate them to subsequent risk of hyperglycemia over 9 years of follow-up. METHODS: Our study used ten waves of data from the CHNS survey, a population-based longitudinal survey in China, ongoing since 1989. We examined a cohort of adult participants who were free from diabetes but had at least three waves of dietary data from 1997 to 2009. We assessed energy intake using three consecutive 24 h recalls. We used these data to identify trajectory groups of energy intake distribution by multi-trajectory model based on energy intake proportions of breakfast, lunch, and dinner. We followed up participants for hyperglycemia, diabetes, and impaired fasting glucose for 9 years from 2009 to 2018. Outcomes were ascertained with fasting glucose, serum HbA1c, and self-report of diabetes and/or glucose-lowering medication. We estimated relative risk (RR) for hyperglycemia, diabetes, and impaired fasting glucose by identified trajectory groups using multilevel mixed-effects modified Poisson regression with robust (sandwich) estimation of variance. Gender difference was additionally examined. RESULTS: A total of 4417 participants were included. Four trajectory groups were identified, characterized and labeled by "Energy evenly distributed with steady trend group" (Group 1), "Dinner and lunch energy dominant with relatively steady trend group" (Group 2), "Dinner energy dominant with increasing trend and breakfast energy with declining trend group" (Group 3), and "breakfast and dinner energy dominant with increasing trend group" (Group 4). During 48,091 person-years, 1053 cases of incident hyperglycemia occurred, 537 cases of incident diabetes occurred, and 516 cases of impaired fasting glucose occurred. Compared with Group 1, Group 3 was associated with higher subsequent risk of incident hyperglycemia in 9 years of follow-up (RR = 1.28, 95% CI = 1.02, 1.61). No association was found for incident diabetes and impaired fasting glucose. Among males, Group 3 was associated with higher risk of incident hyperglycemia in 9 years of follow-up (RR = 1.44, 95% CI = 1.07, 1.94). No relationship was found in females. CONCLUSIONS: Energy intake distribution characterized by over 40% of energy intake from dinner with a rising trend over years was associated with higher long-term risk of hyperglycemia in Chinese adults.

2.
Nutrients ; 13(11)2021 Oct 26.
Artigo em Inglês | MEDLINE | ID: mdl-34836062

RESUMO

Unique rapid urbanization-related changes in China may affect the dietary protein intake of the aging population. We aimed to evaluate trends in dietary protein intake and major food sources of protein and estimate conformity to the dietary reference intakes (DRIs) in the elderly Chinese population. A sample of 10,854 elderly adults aged 60 years or older, drawn from 10 waves of the China Health and Nutrition Survey (CHNS) between 1991 and 2018, was included. Protein intake data were obtained on the basis of 3-day, 24 h dietary recalls. The dietary protein intake among elderly Chinese individuals declined from 63.3 g/day to 57.8 g/day over the 28-year period, with a -0.032 ± 0.0001 g/day change per year (p < 0.05). There was a significant increase in the proportion of subjects with a protein intake level below the estimated averaged requirement (EAR) and a reduction in the proportion of subjects consuming protein above the recommended nutrient intake (RNI) across all population subgroups. Cereals ranked as the major sources of dietary protein, although their contribution to dietary protein gradually decreased as time went on. The contribution from meat steadily rose from 18.2% in 1991 to 28.7% in 2018. The proportion of energy gained from fat increased notably, reaching 34.2% in 2018. The elderly Chinese population experienced a significant reduction in dietary protein intake. Although the transformation of dietary patterns had positive effects on improving protein quality due to increases in animal source food, some elderly Chinese individuals currently face the risk of inadequate dietary protein intake.

3.
Nutrients ; 13(10)2021 Oct 01.
Artigo em Inglês | MEDLINE | ID: mdl-34684489

RESUMO

Few studies have examined the secular trend of energy intake distribution. This study aims to describe trajectories of energy intake distribution and determine their association with dyslipidemia risk. Data of 2843 adult participants from the China Health and Nutrition Survey (CHNS) were analyzed. Trajectory groups of energy intake distribution were identified by multi-trajectory model over 27 years. Multilevel mixed-effects modified Poisson regression with robust estimation of variance was used to calculate risk ratio for incident dyslipidemia in a 9-year follow-up. Four trajectory groups were identified: "Energy evenly distributed group" (Group 1), "Lunch and dinner energy dominant group" (Group 2), "Dinner energy dominant group" (Group 3), "breakfast and dinner energy dominant group" (Group 4). Compared with Group 1, Group 3 was associated with higher risk of dyslipidemia (RR = 1.48, 95% CI = 1.26, 1.75), hypercholesterolemia (RR = 1.96, 95% CI = 1.37, 2.81) and high low-density lipoproteins cholesterols (LDL-C) (RR = 2.41, 95% CI = 1.82, 3.20). A U-shape was observed between cumulative average proportion of dinner energy and dyslipidemia risk (p for non-linear = 0.01), with stronger relationship at 40% and above. Energy intake distribution characterized by higher proportion of dinner energy, especially over 40% was associated with higher dyslipidemia risk in Chinese adults.


Assuntos
Grupo com Ancestrais do Continente Asiático/estatística & dados numéricos , Dieta/estatística & dados numéricos , Dislipidemias/etiologia , Ingestão de Energia , Refeições , China/epidemiologia , Dieta/efeitos adversos , Dieta/etnologia , Dislipidemias/epidemiologia , Dislipidemias/etnologia , Ingestão de Energia/etnologia , Comportamento Alimentar/etnologia , Feminino , Humanos , Incidência , Masculino , Refeições/etnologia , Pessoa de Meia-Idade , Análise Multinível , Inquéritos Nutricionais , Razão de Chances , Distribuição de Poisson
4.
Br J Nutr ; : 1-11, 2021 Sep 02.
Artigo em Inglês | MEDLINE | ID: mdl-34470677

RESUMO

Little is known about the impact of modifiable risk factors on blood pressure (BP) trajectories and their associations with hypertension (HTN). We aimed to identify BP trajectories in normotensive Chinese adults and explore their influencing factors and associations with HTN. We used data from 3436 adults with at least four BP measurements between 1989 and 2018 in the China Health and Nutrition Survey, an ongoing cohort study. We measured BP using mercury sphygmomanometers with appropriate cuff sizes in all surveys. We used group-based trajectory modelling to identify BP trajectories between 1989 and 2009 and multiple logistic and Cox regression models to analyse their influencing factors and associations with HTN in 2011-2018. We identified five systolic blood pressure (SBP) trajectories, 'Low-increasing (LI)', 'Low-stable (LS)', 'Moderate-increasing (MI)', 'High-stable (HS)' and 'Moderate-decreasing (MD)', and four diastolic blood pressure (DBP) trajectories classified as 'Low-increasing (LI)', 'Moderate-stable (MS)', 'Low-stable (LS)' and 'High-increasing (HI)'. People with higher physical activity (PA) levels and lower waist circumferences (WC) were less likely to be in the SBP LI, MI, HS and MD groups (P < 0·05). People with higher fruit and vegetable intakes, lower WCs and salt intakes and higher PA levels were less likely to be in the DBP LI, MS and HI groups (P < 0·05). Participants in the SBP HS group (hazard ratio (HR) 2·01) or the DBP LI, MS and HI groups (HR 1·38, 1·40, 1·71, respectively) had higher risks of HTN (P < 0·05). This study suggests that BP monitoring is necessary to prevent HTN in the Chinese population.

5.
Nutrients ; 13(8)2021 Aug 18.
Artigo em Inglês | MEDLINE | ID: mdl-34444995

RESUMO

It is essential to understand the impact of different dietary pattern trajectories on health over time. Therefore, we aimed to explore the long-term trajectories of dietary patterns among Chinese adults and examine the prospective association between different trajectory groups and the risk of overweight/obesity. The sample was 9299 adults aged 18 years or older from the China Health and Nutrition Survey (CHNS) between 1991 and 2018. We used factor analysis to identify dietary patterns and group-based trajectory modeling to identify dietary pattern trajectories. Three trajectories of a southern pattern and a modern pattern and four trajectories of a meat pattern were identified. Participants who followed the highest initial score and a slight decrease trajectory (OR = 1.63; 95% CI: 1.04, 2.54) of the meat dietary pattern were positively associated with risk of overweight/obesity when compared with the lowest initial score trajectory. The southern dietary pattern and the modern dietary pattern trajectories of participants in Group 2 (OR = 0.64; 95% CI: 0.51, 0.81; OR = 0.76; 95% CI: 0.63, 0.91) and Group 3 (OR = 0.71; 95% CI: 0.54, 0.91; OR = 0.64; 95% CI: 0.44, 0.90) were associated with lower risk of overweight/obesity when compared with Group 1. We observed that dietary pattern trajectories have different associations with overweight/obesity among Chinese adults.


Assuntos
Dieta/estatística & dados numéricos , Obesidade/epidemiologia , Adulto , China , Feminino , Humanos , Estudos Longitudinais , Masculino , Pessoa de Meia-Idade , Inquéritos Nutricionais , Sobrepeso/epidemiologia , Fatores de Risco , Adulto Jovem
6.
Wei Sheng Yan Jiu ; 50(3): 426-431, 2021 May.
Artigo em Chinês | MEDLINE | ID: mdl-34074365

RESUMO

OBJECTIVE: To analyze agreement of body fat percentage measured by bioelectrical impedance analysis(BIA) and dual energy X-ray absorptiometry(DXA) in Chinese adults, and to calibrate BIA measurement by ordinary least product regression(OLP). METHODS: Volunteers aged 18-65 were recruited to measure total body fat percentage and trunk fat percentage by BIA(Tanita BC-601 F) and DXA(Hologic Discovery QDR), respectively. Agreement between the two methods was compared by OLP. Bootstrap method was used to do the internal validation of the calibration equation. The calibration effect was verified by the agreement analysis of the calibrated BIA result and the DXA result. RESULTS: Before calibration, all 95%CIs of the intercepts of the OLP regression lines did not include 0, and all 95%CIs of the slopes of the OLP regression lines did not include 1. 00. After calibration, all 95% CIs of the intercepts of the OLP regression lines included 0, and all 95% CIs of the slopes included 1. 00. CONCLUSION: There are fixed bias and proportion bias between BIA and DXA in measuring total body fat percentage and trunk fat percentage in Chinese men and women. Calibration should be considered when body fat percentage is measured by BIA.


Assuntos
Grupo com Ancestrais do Continente Asiático , Composição Corporal , Absorciometria de Fóton , Adulto , Calibragem , Impedância Elétrica , Feminino , Humanos , Masculino
7.
Nutrients ; 13(3)2021 Feb 25.
Artigo em Inglês | MEDLINE | ID: mdl-33668801

RESUMO

Evidence shows time-of-day of energy intake are associated with health outcomes; however, studies of time-of-day energy patterns and their health implication are still lacking in the Asian population. This study aims to examine the time-of-day energy intake pattern of Chinese adults and to examine its associations with nutrient intakes, diet quality, and insulin resistance. Dietary data from three 24-h recalls collected during the 2015 China Health and Nutrition Survey (CHNS) were analyzed (n = 8726, aged ≥ 18 years). Time-of-day energy intake patterns were determined by latent class analysis (LCA). General Linear Models and Multilevel Mixed-effects Logistic Regression Models were applied to investigate the associations between latent time-of-day energy intake patterns, energy-adjusted nutrient intakes, diet quality score, and insulin resistance. Three time-of-day energy intake patterns were identified. Participants in the "Evening dominant pattern" were younger, had higher proportions of alcohol drinkers and current smokers. The "Evening dominant pattern" was associated with higher daily energy intake and a higher percentage of energy from fat (%) (p < 0.001), as well as higher insulin resistance risk (OR = 1.21; 95% CI: 1.05, 1.40), after adjusting for multivariate covariates. The highest diet quality score was observed in participants with "Noon dominant pattern" (p < 0.001). A higher proportion of energy in the later of the day was associated with insulin resistance in free-living individuals.


Assuntos
Ritmo Circadiano , Dieta/normas , Ingestão de Energia , Comportamento Alimentar , Resistência à Insulina , Adulto , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Inquéritos Nutricionais
8.
Wei Sheng Yan Jiu ; 50(1): 2-7, 2021 Jan.
Artigo em Chinês | MEDLINE | ID: mdl-33517954

RESUMO

OBJECTIVE: To analyze the relationship between different intensity of physical activity(PA) duration and cognitive function. METHODS: The 2018 Community-based Cohort Study on Nervous System Diseases used multi-stage stratified cluster randomization sampling method to select study participants. A total of 5571 participants aged 55 years and above from four provinces in China with complete information on demographic characteristics and PA and cognitive function were included in the final analysis. Basic information and PA data were collected by questionnaire. The Montreal cognitive assessment(MoCA) score method was adopted to evaluate the cognitive function. Light physical activity(LPA) duration and moderate-to-vigorous physical activity(MVPA) duration were calculated. Multivariate Logistic regression and Multiple linear regressions were used to analyze the relationship between different intensity of PA duration and the risk of mild cognitive impairment(MCI) and MoCA total score. RESULTS: The median(P25, P75) of LPA and MVPA were 7. 0(0. 0, 16. 3) and 7. 3(0. 0, 14. 0) hours per week in the non-MCI group among 5571 participants aged 55 years and above in four provinces of China in 2018. In the MCI group, the median duration were 9. 3(0. 0, 17. 5) and 7. 0(0. 0, 11. 7) hours per week. The Logistic analysis showed that the OR of MCI was 0. 63(95%CI 0. 49-0. 82, P<0. 05) for the elderly with 3. 6-7. 0 hours of MVPA per week, compared to the elderly without MVPA. The OR of MCI was 1. 26(95%CI 0. 94-1. 67, P>0. 05) for the elderly with 3. 6-7. 0 hours of LPA per week compared to the elderly without LPA. Multiple linear regression analysis showed that compared to the elderly without MVPA, the total MoCA score increased with LPA duration increased as the duration was less than 10. 5 hours per week. The MoCA score decreased with LPA duration increased as duration was between 10. 5 and 21. 0 hours per week. CONCLUSION: MVPA duration increment was associated with decreased prevalence of MCI and increased cognitive function in the elderly in four provinces of China. LPA duration should be maintained at an appropriate level in order to reduce the incidence of MCI and increased cognitive function in the elderly.


Assuntos
Disfunção Cognitiva , Exercício Físico , Idoso , China/epidemiologia , Cognição , Disfunção Cognitiva/epidemiologia , Estudos de Coortes , Humanos , Pessoa de Meia-Idade
9.
Eur J Clin Nutr ; 75(2): 274-282, 2021 02.
Artigo em Inglês | MEDLINE | ID: mdl-32404900

RESUMO

OBJECTIVES: To examine the effects of physical activity (PA) in adults with or without prehypertension at baseline on systolic blood pressure (SBP), diastolic blood pressure (DBP), and hypertension risk by gender. METHODS: A total of 5986 men and 6525 women (≥18 years old) without hypertension-related disease at baseline who attended surveys from China Health and Nutrition Survey (1991-2015) at least twice were selected. In terms of the nested data structure, three-level random intercept growth model and three-level logistic regression were used to estimate the relationship between the PA and SBP/DBP or hypertension risk. RESULTS: The incidence of hypertension increased from 10.86% in 1991 to 20.34% in 2015, and the median of PA dropped from 408 MET·h/week in 1991 to 104 MET·h/week in 2015. After adjusting confounders, PA in the third and fourth quartiles decreased SBP (by 0.98 and 0.96 mm Hg, p < 0.05) and DBP (by 0.30 and 0.38 mm Hg, p < 0.05), and it reduced the odds of hypertension by 12 and 15% (p < 0.05), compared with PA in the lowest quartile. For normotensive women in the third quartile of PA and prehypertensive women in the fourth quartile of PA, the risk of hypertension was reduced 15 and 22%, compared with women in the lowest quartile of PA. CONCLUSIONS: Physical activity should be improved to the relatively high level to be effective in controlling blood pressure. Normotensive women had an association between physical activity and SBP, DBP, and the risk of hypertension.


Assuntos
Hipertensão , Adolescente , Adulto , Pressão Sanguínea , China/epidemiologia , Exercício Físico , Feminino , Humanos , Hipertensão/epidemiologia , Hipertensão/etiologia , Masculino , Inquéritos Nutricionais , Fatores de Risco
10.
Public Health Nutr ; : 1-8, 2020 Sep 14.
Artigo em Inglês | MEDLINE | ID: mdl-32924898

RESUMO

OBJECTIVE: To measure the associations of sociodemographic and behavioural factors with fruit and vegetable consumption among adults in China. DESIGN: A cross-sectional study. SETTING: A 2015 wave of the China Health and Nutrition Survey. PARTICIPANTS: Totally, 11 910 adults aged 18 to 64 years. RESULTS: Adjusted log binomial regression analyses showed that adults with higher income levels had higher fruit intake than those with low income levels (medium income group, risk ratio (RR): 1·28; 95 % CI: 1·16, 1·41; high income group, RR: 1·58; 95 % CI: 1·43, 1·74). Current smokers had lower fruit intake than non-smokers (RR: 0·86; 95 % CI: 0·77, 0·96). Adults living in southern China had higher vegetable intake (RR: 1·88; 95 % CI: 1·76, 2·01) but lower fruit intake (RR: 0·85; 95 % CI: 0·79, 0·91) than adults in northern China. With increasing age, adults had higher fruit intake (50-64 years, RR: 1·20; 95 % CI: 1·09, 1·33; reference category 18-34 years) and higher vegetable intake (35-49 years, RR: 1·13; 95 % CI: 1·05, 1·22; 50-64 years, RR: 1·22; 95 % CI: 1·13, 1·31). CONCLUSIONS: Our findings identify a range of sociodemographic and behavioural factors associated with fruit and vegetable consumption among Chinese adults. They also point to the need for public health nutrition interventions for socially disadvantaged populations in China.

11.
Int J Obes (Lond) ; 44(11): 2267-2278, 2020 11.
Artigo em Inglês | MEDLINE | ID: mdl-32963328

RESUMO

BACKGROUND: Overweight and obesity are rising among Chinese reproductive-age women, while some studies have focused on the relationship between sedentary behavior and obesity in certain populations, none has focused on Chinese reproductive-age women specifically. This study examined secular trends in leisure time sedentary behaviors (watching television time, computer time and reading time, and the total sedentary time) among Chinese reproductive-age women and the association of those behaviors with five weight indicators-body mass index (BMI), waist circumference (WC) and overweight, obesity, and abdominal obesity status. METHODS: A prospective cohort study was conducted with Chinese reproductive-age women aged 15-49 who had participated in two or more rounds of the China Health and Nutrition Survey (CHNS), and completed the questionnaire and anthropometric measurements. The exposure variables were the average weekly time spent on three leisure time sedentary behaviors (watching television, using computer, and reading) and the total sedentary time (the sum of the above three sedentary time and video game time). Mixed-effect linear models were produced to explore the secular trends of the mean hours of these sedentary behaviors and the total sedentary time after adjusting covariates. Models were also produced to study the effects of these types of sedentary behavior levels on BMI and WC. Mixed-effect logistic regression models were produced to study the effects of the sedentary behavior levels on overweight, obesity, and abdominal obesity status. RESULTS: The total sedentary time among the reproductive-age women increased over time across most of age, region, educational levels, and income groups from 2004 to 2015. Television hours fluctuated, it increased and then declined over time across most of age, region, and income groups. Computer hours continually increased over time across all age, region, educational level, and income groups. Reading hours gradually decreased over time across most of age, region, educational level, and income groups. Those with a moderate level of television time (14 to <35 h/week) had 1.08 cm larger WCs and were 1.31 times more likely to have abdominal obesity than those with a low level of television time (<14 h/week). Those with a high level of television time (≥35 h/week) had 1.74 cm larger WCs, 0.66 kg/m2 larger BMIs, were 1.50 times more likely to be overweight and were 1.47 times more likely to have abdominal obesity than those with a low level of television time (<14 h/week). Greater computer, reading time, and total sedentary time were not associated with WC, BMI, overweight, obesity, or abdominal obesity. CONCLUSIONS: These findings showed that among Chinese reproductive-age women ages 15-49, secular trends of computer time increased rapidly, reading time decreased gradually and television time fluctuated but showed not much difference from 2004 to 2015. The sharp increase in computer time far outweighed the decline in reading time. As a result, the overall sedentary behavior time of Chinese reproductive-age women gradually increased. These findings provided strong evidence that greater television time was significantly associated with higher BMI, WC, and higher risks of overweight, abdominal obesity among Chinese reproductive-age women. Computer, reading, and the total sedentary time were not associated with those weight indicators.

12.
Wei Sheng Yan Jiu ; 49(3): 345-356, 2020 May.
Artigo em Chinês | MEDLINE | ID: mdl-32693882

RESUMO

OBJECTIVE: To analyze the changes in the awareness of nutritional knowledge in Chinese adults during 2004-2015. METHODS: The present study used data from "China Health and Nutrition Health" and selected those participated in surveys conducted in 2004-2015, with completed data of demographic characteristics and nutritional knowledge measurement and aged 18 years and above as subjects. We analyzed the awareness rates of Chinese Dietary Guidelines and various nutritional knowledges in adults from different provinces and adults of 9 provinces by characteristics, and evaluated the changes during 2004-2015. RESULTS: There were 9615, 9702, 9999, 12 990 and 15 958 subjects in waves of 2004, 2006, 2009, 2011 and 2015, respectively. Awareness of dietary guidelines in adults from 9 provinces significantly increased during 2004-2015(P<0. 0001), and the rate was 21. 1% in 2015, 2. 9 times as high as that in 2004. The awareness rates of all seven correct nutritional knowledges also displayed an increased trend during survey periods(P<0. 0001), and there was a considerable rise in 2006. Awareness on staple foods was lower in each wave, especially in 2004(0. 9%). The changes in the awareness of all five wrong nutritional knowledges were inconsistent during 2004-2015, in which the awareness on sugar, high fat foods and physical activity showed a decreased trend(P<0. 0001), and the awareness rate of physical activity was lower. Overall awareness of nutritional knowledges in adults tended to increase during 2004-2015(P<0. 0001), however, that in each wave was very low, and just 4. 0% in 2015. Awareness of dietary guidelines in adults from 3 municipalities in 2015 was higher than that in 2011(P<0. 0001), but the differences were opposite for most of nutritional knowledges. Moreover, awareness of dietary guidelines of 3 municipalities(Beijing, Shanghai and Chongqing)in 2011 and 2015 was higher than corresponding rate in 9 provinces or newly recruited 3 provinces. There were similar changes in the awareness of dietary guidelines and nutritional knowledges in adults from 9 provinces by age, gender, education level, residence area and location during 2004-2015 to that in total population, and there were differences in the awareness of nutritional knowledge by demographic characteristics in some survey waves. CONCLUSION: The awareness of dietary guidelines and overall awareness of nutritional knowledges were lower in Chinese adults, especially for the items on staple foods, meat and physical activity.


Assuntos
Dieta , Política Nutricional , Adolescente , Adulto , Pequim , China , Cidades , Humanos , Inquéritos Nutricionais
13.
BMC Public Health ; 20(1): 732, 2020 May 19.
Artigo em Inglês | MEDLINE | ID: mdl-32429924

RESUMO

BACKGROUND: The inverse association between physical activity and body fat percentage (%) varies among different populations. We aim to examine whether the significant association between them was uniform across the subpopulations after taking into account body mass index (BMI). METHODS: Our study relied on data from China Health and Nutrition Surveys in 2015, including 5763 participants aged 40-64 years from 15 regions. Physical activity was calculated as metabolic equivalent task hours per day (MET·h/d). Body fat% was measured by bioelectrical impedance analysis. Body mass index < 24 kg/m2 was defined as normal weight and BMI ≥ 24 kg/m2 was overweight/obese. The effects of physical activity on body fat% were estimated using the Kruskal-Wallis test among sex, age, BMI groups, education, income, region and urbanization. Quantile regression analyses were utilized to describe the relationship between physical activity and body fat% distribution. RESULTS: Older adults, overweight/obese, higher education, higher income, residents of central China and those living in areas of higher urbanization had the lower physical activity. Participants who engaged in the highest level of physical activity had 2.0 and 1.5% lower body fat% than the lowest level of physical activity group (23.4, 34.8%) for men and women, respectively. There were 10.4 and 8.8% of normal weight males and females called normal weight obese. Overall, 1 h extra 4.5 MET•h/d was significantly associated with 0.079 and 0.110% less total body fat% at the 75th and 90th percentiles in normal weight males, with 0.071% less at the 25th percentiles in overweight/obese males, with 0.046-0.098% less at the 25th to 90th percentiles in normal weight females, and with 0.035-0.037% less from the 50th to 90th percentiles in overweight/obese females. The inverse association between physical activity and total body fat% was stronger in normal weight obese participants than other subgroups. CONCLUSIONS: In middle-aged Chinese adults, the inverse association between physical activity and body fat% was only in particular subpopulations rather than the entire population. We should pay much attention to normal weight obese and give a suitable physical activity guideline taking into account people with different body fat%.


Assuntos
Tecido Adiposo , Distribuição da Gordura Corporal , Índice de Massa Corporal , Exercício Físico/fisiologia , Sobrepeso/fisiopatologia , Adulto , China/epidemiologia , Impedância Elétrica , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Inquéritos Nutricionais , Obesidade/epidemiologia , Obesidade/fisiopatologia , Sobrepeso/epidemiologia , Inquéritos e Questionários
14.
BMC Psychiatry ; 20(1): 260, 2020 May 25.
Artigo em Inglês | MEDLINE | ID: mdl-32450832

RESUMO

An amendment to this paper has been published and can be accessed via the original article.

15.
Wei Sheng Yan Jiu ; 49(1): 19-27, 2020 Jan.
Artigo em Chinês | MEDLINE | ID: mdl-32290909

RESUMO

OBJECTIVE: To longitudinally analyze the associations between physical activity, sedentary time and dietary intake levels with waist circumference and abdominal obesity among Chinese reproductive women. METHODS: In the five rounds of "China health and nutrition survey" in 2004, 2006, 2009, 2011 and 2015, 2951 women aged 15-49 years old who participated in at least two rounds of surveys were selected as research objects. Physical activity and sedentary time data were collected by questionnaire survey, and food consumption data were collected by 24-hour retrospective method for 3 consecutive days. Analysis of variance was used to analyze the time difference of continuous variables. Chi-square test was used to analyze the differences in time distribution of classified variables. Linear multilevel model was used to analyze the relationships between waist circumference and different levels of physical activity, sedentary time and dietary intake. Logistic multilevel model was used to analyze the risk of abdominal obesity with different levels of physical activity, sedentary time and dietary intake. RESULTS: By incorporating physical activity, sedentary time and dietary intake levels into the multilevel model respectively, compared with the low level of leisure-time physical activity, the waist circumference of the medium level group increased by 0. 47 cm(P=0. 025); compared with low level of TV time, waist circumference of the medium and high level increased by 0. 49 cm(P=0. 033) and 0. 58 cm(P=0. 013), respectively, and the relative risk of abdominal obesity was 1. 13(P=0. 049) and 1. 17(P=0. 010), respectively; compared with the group with insufficient intake of dark vegetables, the waist circumference of the group with adequate intake decreased by 0. 82 cm(P<0. 001), and the relative risk of abdominal obesity was 0. 87(P=0. 028); compared with the group with low level of pastry intake, the waist circumference of the high level group increased by 1. 16 cm(P<0. 001) and the relative risk of abdominal obesity was 1. 33(P<0. 001). By incorporating physical activity, sedentary time and dietary intake levels into the multilevel model simultaneously, there were still statistically significant differences between TV time and dietary intake levels with waist circumference and abdominal obesity and the statistical value did not change much. Compared with low level of TV time, the waist circumference of the medium and high level groups increased by 0. 54 cm(P=0. 028) and 0. 58 cm(P=0. 025), respectively, and the relative risk of abdominal obesity was 1. 15(P=0. 034) and 1. 18(P=0. 011), respectively. Compared with the group with insufficient intake of dark vegetables, the waist circumference of the group with adequate intake decreased by 0. 80 cm(P<0. 001), and the relative risk of abdominal obesity was 0. 87(P=0. 027). Compared with the group with low level of pastry intake, the waist circumference of the high level increased by 1. 13 cm(P<0. 001) and the relative risk of abdominal obesity was 1. 32(P<0. 001). There was no statistical significance in physical activity level with waist circumference and abdominal obesity. CONCLUSION: Television time and dietary factors(insufficient intake of dark color vegetables and high consumption of pastry) are independent risk factors for abdominal obesity among Chinese reproductive women. Besides strengthening physical activity, the prevention of abdominal obesity in reproductive women should also strengthen the intervention measures to reduce TV time and promote appropriate dietary behaviors(increasing dark color vegetable intake and reducing pastry intake).


Assuntos
Obesidade Abdominal/epidemiologia , Adolescente , Adulto , Índice de Massa Corporal , China , Estudos Transversais , Dieta , Exercício Físico , Feminino , Humanos , Modelos Logísticos , Estudos Longitudinais , Pessoa de Meia-Idade , Análise Multinível , Inquéritos Nutricionais , Estudos Retrospectivos , Comportamento Sedentário , Circunferência da Cintura , Adulto Jovem
16.
Wei Sheng Yan Jiu ; 49(1): 28-35, 2020 Jan.
Artigo em Chinês | MEDLINE | ID: mdl-32290910

RESUMO

OBJECTIVE: To assess the intake of thiamine, riboflavin and niacin and estimate the association between the adequacy of intake of those three B-vitamins and risk factors among older Chinese adults. METHODS: A total of 3222 adults aged 65 and above with completed dietary data were derived from the 2015 survey of China Nutritional Transition Cohort Study 2015. The total subjects. Dietary data was recorded by three consecutive days with 24-hour recalls. The intake of those three B-vitamins were assessed by comparing with Chinese dietary thiamine, riboflavin and niacin reference intakes. The food sources of three vitamins were analyzed. Multivariate Logistic regression was used to estimate adjusted odds ratios for factors associated with the inadequacy of intake of those three vitamins. RESULTS: The median daily intake of thiamine, riboflavin and niacin was 0. 8, 0. 7 and 12. 8 mg in males, and 0. 7, 0. 6 and 10. 9 mg in females, respectively. Adults aged 80 and above and living in the southern regions were more likely to have inadequate thiamine intake than adults aged 65-79 and living in northern regions, respectively. Adults had inadequate intake of riboflavin were more likely to be living in a village and adults with lower education levels than adults living in a city and adults with higher education levels. In males, adults had inadequate intake of niacin were more likely to be 80 years and above, with lower education levels, living in the northern regions, living in a village and with the lowest income. In females, adults had inadequate intake of niacin were more likely to be with lower education, living in northern regions and living in a village. CONCLUSION: About 80% adults were at the risk of the inadequate intake of thiamine and riboflavin in China. Age, education, income, regions and areas of residence were associated with the intake of thiamine, riboflavin and niacin.


Assuntos
Dieta , Niacina/administração & dosagem , Riboflavina/administração & dosagem , Tiamina/administração & dosagem , Idoso , Idoso de 80 Anos ou mais , China , Cidades , Estudos de Coortes , Feminino , Humanos , Masculino , Inquéritos Nutricionais
17.
Wei Sheng Yan Jiu ; 49(2): 195-200, 2020 Mar.
Artigo em Chinês | MEDLINE | ID: mdl-32290931

RESUMO

OBJECTIVE: To describe the regional and population-related differences in body fat percentage(BF%) and fat quality among 18-65 years old adults in 15 provinces(autonomous regions and municipalities) of China in 2015, and analyze the relationship between body fat percentage and body mass index(BMI). METHODS: A total of 10 561 adults aged 18-65 years old who have complete physical measurements and relevant demographic economic data from the 2015 China Nutritional Transition Cohort Study were included. Body fat percentage and weight were measured using the bioelectrical impedance analysis. Body fat percentage and fat quality of different genders were described among different age groups, education levels, incomes, regions, urban and rural areas. And the obesity prevalence defined by body fat percentage(recommended by WHO) was described. RESULTS: In 2015, the body fat percentage and fat quality of adult women aged 18-65 in 15 provinces(autonomous regions and municipalities)were 33. 6% and 19. 5 kg, respectively, and adult males were 23. 0% and 15. 7 kg. Body fat percentage and fat quality were higher in the North than in the South(P<0. 0001). There were statistical differences in body fat percentage and fat quality among men of different ages, educational levels, incomes, regions and urban and rural populations(P<0. 0001). There were differences in body fat percentage and fat quality among women of different ages, educational levels, regions(P<0. 0001), and no differences in incomes and urban and rural areas. According to the body fat percentage(recommended by WHO), the prevalence of obesity of women was 42. 0% increasing by age, and the prevalence of obesity of women aged 60-65 was as high as 52. 4%. The prevalence of obesity of men was 37. 1%, which increased with age, but decreased in the 60-65 age group. The prevalence of obesity of males and females in northern regions was 41. 9% and 45. 6%, respectively, which was significantly higher than in the southern regions(34. 3% and 39. 9%). BMI was closely related to BF%, but in overweight people, more than 50% of people defined by body fat percentages reached obesity. CONCLUSION: In 2015, there were significant regional and population differences in body fat percentage and fat quality among adults of different genders in 15 provinces(autonomous regions and municipalities), and the prevalence of obesity in the North was significantly higher than that in the South.


Assuntos
Adiposidade/fisiologia , Composição Corporal , Índice de Massa Corporal , Adolescente , Adulto , Idoso , China , Cidades , Estudos de Coortes , Estudos Transversais , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Prevalência , Adulto Jovem
18.
BMC Psychiatry ; 20(1): 130, 2020 03 20.
Artigo em Inglês | MEDLINE | ID: mdl-32197589

RESUMO

BACKGROUND: The Perceived Stress Scale (PSS) is a globally used and self-report scale measuring perceived stress. Three versions of PSS (PSS-14, PSS-10 and PSS-4) are available which comprise 14, 10 and 4 items respectively. However, the Chinese version of the PSS has not yet been validated in a large community-based general population. The aims of this study were to evaluate the psychometric properties of the Chinese PSS in a large community-based general population and to compare the appropriateness of the three versions of PSS. METHODS: A total of 9507 adults with at least a junior high school education and completed PSS-14 from the China Health and Nutrition Survey were involved in this study. The internal consistency reliability of PSS was assessed using Cronbach's alpha coefficient and confirmatory factor analysis was employed to test the construct validity. Modification index was used for model extension and the critical ratio was used for model restriction. RESULTS: The internal consistency coefficients were satisfactory for PSS-14 and PSS-10, but not for PSS-4. The corresponding Cronbach's alpha were 0.830, 0.754 and 0.473 respectively. A 2-factor structure was confirmed for the PSS-14 and PSS-10, and all items' standardized factor loadings exceeded 0.4 for either negative or positive factors. Given that item 12 loaded on both negative and positive factors for PSS-14 and the goodness of fit for PSS-14 was not acceptable, PSS-13 (PSS-14 excluding item 12) was studied. The construct validities of PSS-13 and PSS-10 were satisfactory, but the goodness of fit for PSS-10 were better than that for PSS-13. CONCLUSIONS: PSS-13 (PSS-14 excluding item 12) and PSS-10 have satisfactory psychometric properties. PSS-10 are more applicable to measure the perceived stress than PSS-13 in a large community-based general population in China.


Assuntos
Estresse Psicológico , Adulto , China , Análise Fatorial , Feminino , Humanos , Masculino , Psicometria , Reprodutibilidade dos Testes , Estresse Psicológico/diagnóstico , Inquéritos e Questionários
19.
China CDC Wkly ; 2(7): 104-108, 2020 Feb 14.
Artigo em Inglês | MEDLINE | ID: mdl-34594834

RESUMO

What is already known about this topic? Sodium intake in China is among the highest in the world, the main source of which in adults is salt added during cooking. In 2012, the national average cooking salt intake was 10.5 g/d. What is added by this report? In 2018, median cooking salt intake was 6.3 g/d, which has decreased compared to that in 1991. The north-south gap in cooking salt intake was closing over time. What are the implications for public health practice? Effective policies and interventions need to be sustained and intensified to lower cooking salt intake, thus achieving the recommended level of sodium and total salt intake.

20.
China CDC Wkly ; 2(9): 135-139, 2020 Feb 28.
Artigo em Inglês | MEDLINE | ID: mdl-34594841

RESUMO

What is already known about this topic? The monitoring report on nutrition and health status of Chinese residents from 2010 to 2013 reported that the participation rate of leisure-time physical activity (LTPA) was 13.8% among those 6 years and older. What is added by this report? Among 18 years old and older, the age-standardized LTPA prevalence increased from 7.13% in 2000 to 11.79% in 2011 before dropping to 7.33% in 2015. What are the implications for public health practice? As levels of LTPA participation are low, further research is necessary to develop and test valid interventions to encourage people to take part in more LTPA especially for residents in rural areas and with low-income.

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