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Norma Olvera, Dennis W. Smith, Chanam Lee, Jian Liu, Jay Lee, Jun-Hyun Kim and Stephanie F. Kellam

Background:

Parents represent a key ecological component in influencing their child’s physical activity. The aim of this exploratory study was to assess the relationship between maternal acculturation and physical activity in Hispanic children.

Methods:

102 Hispanic mothers (mean age 36.2 yrs; +SD 7.3 yrs) and their children (mean age 10.0 yrs, +SD 0.8 yrs) participated. Most of the mothers (74%) were foreign-born, with 62% classified as low acculturated and 38% high acculturated. Demographic, acculturation, and anthropometric measures were completed by mothers and children. Physical activity was measured using accelerometers. Relationships between maternal acculturation and demographic variables and children’s physical activity were examined using chi-square, Analysis of Variance, and simple regression.

Results:

Children had higher physical activity levels than their mothers (t(49) = −7.87, P < .0001). Significant correlations between maternal and child’s physical activity levels were observed in moderate (r 2 = 0.13, P = .001), vigorous (r 2 = 0.08, P = .05), and moderate-to-vigorous physical activity (r 2 = 0.17, P = .002). Low acculturated mothers were more likely to have active children compared with high acculturated mothers. Maternal BMI and other demographic characteristics were not significantly associated with child’s physical activity.

Conclusions:

Findings from this study revealed an association among maternal acculturation, role modeling, and child’s physical activity.

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Peter S.W. Davies, Jian-Ying Feng, J. Anthony Crisp, Janice M.E. Day, Ann Laidlaw, Jidi Chen and Xiao-Peng Liu

The energy expenditure and hence energy requirements of 12 young Chinese gymnasts attending a specialized school in Beijing were assessed. Total energy expenditure was measured using the doubly labeled water technique and this, in conjunction with measures of basal metabolic rate (BMR), allows the calculation of a physical activity level (PAL). Mean PAL value for the gymnasts was 1.98, which is significantly different from published mean values found in nongymnast children of a similar age. This mean value is equivalent to very heavy levels of physical activity during the periods of training being undertaken. This is the first time that energy expenditure has been noninvasively measured in free-living young gymnasts. The data will be of use to sports scientists and nutritionists alike.

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Jie Liang, Shuang-Shuang Tian, Nan Qiao, Cong Wang, Jian-Jun Huang, Chen-Ming Sun, Hai-Xia Zhang, Yan Cui, Hui Wang, Xiao-Meng Liu, Shu-Hong Xu, Hongwei Guan and Tong Wang

Objective:

This study aimed to investigate the relationship between metabolic syndrome (MetS) and physical activity (PA) in different domains among male coal miners of Shanxi Province in China.

Method:

The study was conducted from July 2013 to December 2013. A two-stage stratified cluster sampling method was used. Data regarding the general information of participants were collected by well-trained interviewers. MetS was defined according to IDF criteria. Self-reported PA was obtained with the IPAQ and categorized into three tertiles of intensity levels across occupation, transportation, household, and leisure-time domains. Univariate and multiple logistic regression analysis were applied to compute the odds ratios and their 95% confidence interval (CI).

Results:

A total of 3076 males aged 18–65 years old were recruited in this cross-sectional study. The prevalence of MetS was 40.5% in the study subjects. The percentages of vigorous-intensity PA in MetS and non-MetS groups were 70.07% and 62.92%, respectively. Participants spent most of their time on occupation (2034 MET-min/w) and transportation (693MET-min/w) domains. Higher-intensity levels in occupation domains were significantly associated with lower risk of MetS (OR: 0.759, 95% CI: 0.633–0.911; OR: 0.627, 95% CI: 0.516–0.762).

Conclusions:

Across four types of workers, the relationships between PA domains and MetS were different. For underground and underground auxiliary workers, the negative relationship was found between occupation PA and MetS. For office workers, the negative relationship was found between household PA and MetS. For ground workers, only leisure-time PA had positively related to MetS.