Inacio Crochemore Mohnsam da Silva, Mario Renato Azevedo and Helen Gonçalves
To explore the association between family and friends’ social support and leisure-time physical activity (PA) in adults.
Cross-sectional population-based study, conducted in Pelotas, Brazil. Leisure-time PA was measured with the long version of the International Physical Activity Questionnaire. Those who reported PA practice ≥ 150 minutes on the week before the interview were considered active. Social support was evaluated through the Social Support Scale for PA and classified according to the type of PA. For analyzing the association between social support and PA, Poisson regression model was used. Analyses were stratified by sex and interactions with socioeconomic level and age were explored.
Men and women who received social support from family and friends simultaneously were about 3 times more active than their counterparts. Friends’ social support presented, in all analyses, stronger associations with PA than family support. Interactions with socioeconomic level and age were observed.
Interventions targeting individuals and their social environment are likely to have greater effectiveness than those targeted on one of these aspects only.
Javier Brazo-Sayavera, Cecilia del Campo, María José Rodríguez, Inacio Crochemore Mohnsam da Silva, Eugenio Merellano-Navarro and Pedro R. Olivares
Thiago T. Borges, Pedro C. Hallal, Inacio Crochemore Mohnsam da Silva, Grégore Iven Mielke, Airton J. Rombaldi and Fernando C. Barros
The aim of the current study was to evaluate the association between knowledge about physical activity (PA) recommendations (in terms of duration and frequency) and physical activity practice in a population-based sample of adults and adolescents.
Crosssectional survey, conducted in Pelotas, Brazil. Participants (10+ years) were included in the sample and reported their perception about the minimum number of days and duration of PA to achieve health benefits. Those who reported PA practice ≥ 150 min/wk (adults) and ≥ 300 min/wk (adolescents) were considered active.
The sample included 1696 adults and 399 adolescents. More than one-third (38.6%) of the adult population reported that < 150 minutes of PA per week would be sufficient to obtain health benefits. Moreover, 76.1% of the adolescents reported that < 300 minutes per week were sufficient to obtain health benefits. Among adolescents, those who were active tended to report that higher amounts of PA were needed to obtain health benefits.
Despite global recognition of the role of PA for improving health, knowledge about the minimum frequency and duration for achieving health benefits is still low in Brazil, particularly among adolescents.
Inacio Crochemore Mohnsam da Silva, Alan Goularte Knuth, Grégore Iven Mielke, Mario Renato Azevedo, Helen Gonçalves and Pedro Curi Hallal
Most of physical activity surveillance data are derived from high-income countries. The aim of the current study was to report time trends in leisure-time physical activity.
Population-based surveys were conducted in the city of Pelotas, Brazil in 2003 and 2010, including individuals aged 20+ years. Physical activity was assessed using the leisure-time section of the long version of the IPAQ. A cut-off point of 150 min/wk was used in the analyses. Methodologies were virtually identical in both surveys.
In 2003, 26.8% (95% CI 24.3; 29.2) of the participants were classified as active in leisuretime, as compared with 24.4% (95% CI 22.6; 26.2) in 2010. The proportion of subjects reporting 0 minutes per week of walking, moderate- and vigorous-intensity physical activity practice also did not vary between 2003 and 2010. However, the proportion of active adults decreased from 39.9% (95% CI 33.0; 42.7) in 2003 to 29.7% (95% CI 24.9; 34.5) in 2010 among high-income participants. Males were more active than females in both surveys.
Leisure-time physical activity is stable among adults living in the South of Brazil, but high-income participants are becoming less active over time. Scaling up effective and promising physical activity interventions is urgently needed in Brazil.