ORCID Profile
0000-0002-7609-7705
Current Organisation
Universidad Austral de Chile
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Publisher: Oxford University Press (OUP)
Date: 28-07-2017
Abstract: Sitting behaviours have increased markedly during the last two decades in Chile. However, their associations with health outcomes such as diabetes have not been reported. Therefore, the aim of this study was to investigate the independent association of self-reported sitting time with diabetes-related markers and diabetes prevalence in Chile. This cross-sectional study included participants (aged ≥18 years) from the Chilean National Health Survey 2009-10 (n = 4457). Fasting glucose and haemoglobin A1c (HbA1c) were measured by standardized protocols. The prevalence of type 2 diabetes (T2D) was determined using WHO criteria. Physical activity (PA) and time spent sitting were determined using the Global Physical Activity Questionnaire (GPAQ). The odds ratio for T2D was 1.10 [95% CI: 1.04-1.16, P = 0.002] and 1.08 [1.02-1.14, P = 0.002] per 1 h increase in sitting time in men and women, respectively, independent of age, education, smoking, BMI and total PA. Overall, prevalence of T2D was 10.2 and 17.2% in in iduals classified in the lowest and highest categories of sitting time, respectively. No significant associations were found between sitting time and glucose or HbA1c. Sitting time is positively associated with diabetes risk, independent of socio-demographic, obesity and PA levels, in the Chilean population.
Publisher: SciELO Agencia Nacional de Investigacion y Desarrollo (ANID)
Date: 11-2016
Publisher: SciELO Agencia Nacional de Investigacion y Desarrollo (ANID)
Date: 11-2015
Publisher: Oxford University Press (OUP)
Date: 25-06-2016
Abstract: Surveillance of physical activity (PA) is essential for the development of health promotion initiatives. The aim of the present study was to examine the prevalence of PA and sedentary behaviour with respect to socio-demographic factors in Chile. A representative s le of 5434 adults aged ≥15 years (59% women) who participated in the Chilean National Health Survey (2009-2010) were included. Socio-demographic data (age, sex, environment, education level, income level and smoking status) were collected for all participants. PA levels were assessed using the Global Physical Activity Questionnaire. 19.8% [95% CI: 18.1-21.6] of the Chilean population did not meet PA recommendations (≥600 MET min week(-1)). The prevalence of physical inactivity was higher in participants aged ≥65 years, compared with the youngest age groups and was higher in women than in men. However, it was lower for participants with high, compared with low, education or income levels. The overall prevalence of sedentary risk behaviour (spending >4 h sitting per day) was 35.9% [95% CI: 33.7-38.2]. Physical inactivity correlates strongly with socio-demographic factors such as age, gender and educational level. Results identify social and economic groups to which future public health interventions should be aimed to increase PA in the Chilean population.
Publisher: SciELO Agencia Nacional de Investigacion y Desarrollo (ANID)
Date: 10-2017
Publisher: Oxford University Press (OUP)
Date: 17-10-2017
Abstract: To investigate the associations between combined categories of moderate-to-vigorous physical activity (MVPA) and sedentary behaviour (SB) with markers of adiposity and cardiovascular risk in adults. Overall, 5040 participants (mean age 46.4 years and 59.3% women) from the cross-sectional Chilean National Health Survey 2009-2010 were included in this study. MVPA and SB were measured using the Global Physical Activity questionnaire. Four categories were computed using MVPA- and SB-specific cut-offs ('High-SB & Active', 'Low-SB & Active', 'High-SB & Inactive' and 'Low-SB & Inactive'). Compared to the reference group ('High-SB & Inactive'), those in 'High-SB & Active' and 'Low-SB & Active' were less likely to have an obese BMI (OR: 0.67 [0.54 0.85], P = 0.0001 and 0.74 [0.59 0.92] P = 0.0007, respectively) and less likely to have metabolic syndrome (OR: 0.63 [0.49 0.82], P < 0.0001 and 0.72 [0.57 0.91], P = 0.007), central obesity (OR: 0.79 [0.65 0.96], P = 0.016 and 0.71 [0.59 0.84], P < 0.0001), diabetes (OR: 0.45 [0.35 0.59], P < 0.0001 and 0.44 [0.34 0.56], P < 0.0001) and hypertension (OR: 0.52 [0.43 0.63], P < 0.0001 and 0.60 [0.50 0.72], P < 0.0001), respectively. Being physically active and spending less time in SBs was associated with lower adiposity and improvements in cardiovascular risk factors.
Publisher: SciELO Agencia Nacional de Investigacion y Desarrollo (ANID)
Date: 08-2016
Publisher: SciELO Agencia Nacional de Investigacion y Desarrollo (ANID)
Date: 07-2017
DOI: 10.4067/S0034-98872017000700837
Abstract: Active commuting is associated with a lower risk for obesity in developed countries. To investigate the association between active commuting and obesity risk in Chile. Active commuting was measured using the Global Physical Activity Questionnaire (GPAQ v2) in 5,293 participants from the Chilean National Health Survey 2009-2010. Body mass index (BMI) and waist circumference (WC) were the study outcomes. The association between active commuting and obesity was investigated using linear and logistic regression analysis. Thirty four percent of responders [95% confidence intervals (CI): 32.6-35.1] were passive commuters. Active commuters had a lower BMI and WC than their passive counterparts. Thirty minutes increment in active commuting were associated with a -0.20 kg.m-2 lower BMI [95% CI: -0.33 to -0.07, p < 0.01] and a -076 cm lower WC [95% CI: -1.08 to -0.43, p 25 kg.m-2 was 0.93 [95% CI: 0.88 to 0.98, p = 0.01] per every 30 minutes' increment in active commuting, whereas the odds for central obesity was 0.87 [95% CI: 0.82 to 0.92, p < 0.01]. Active commuting is associated with a lower adiposity and lower risk for obesity in Chilean adults.
Publisher: SciELO Agencia Nacional de Investigacion y Desarrollo (ANID)
Date: 04-2017
Publisher: Oxford University Press (OUP)
Date: 28-07-2017
Abstract: There is limited evidence on how active commuting is associated with health benefits in developing countries. The aim of this study therefore was to investigate the associations between active commuting and markers of adiposity and cardiometabolic risk in the Chilean adult population. In total, 5157 participants from the Chilean National Health Survey 2009-10 were included in this cross-sectional study. Active commuting was measured using the Global Physical Activity Questionnaire (GPAQ v2). Body mass index (BMI) and waist circumference (WC) were measured and used to define obesity and central obesity. Type 2 diabetes (T2D) and metabolic syndrome were determined using WHO and updated ATPIII-NCEP criteria, respectively. The main finding of this study is that a 30 min increase in active commuting is associated with lower odds for BMI > 25.0 kg m-2 (0.93 [95% CI: 0.88-0.98, P = 0.010]). Similarly, the odds for central obesity was 0.87 [0.82-0.92, P < 0.0001]. Similar associations were found for T2D (0.81 [0.75-0.88], P < 0.0001) and metabolic syndrome (OR: 0.86 [0.80-0.92], P < 0.0001). Our findings show that active commuting is associated with lower adiposity and a healthier metabolic profile including lower risk for obesity, diabetes and metabolic syndrome.
No related grants have been discovered for Maria Adela Martinez.