Agreement in activity energy expenditure assessed by accelerometer and self-report in adolescents: variation by sex, age, and weight status

The agreement between self-reported and objective estimates of activity energy expenditure was evaluated in adolescents by age, sex, and weight status. Altogether, 403 participants (217 females, 186 males) aged 13-16 years completed a 3-day physical activity diary and wore a GT1M accelerometer on the same days. Partial correlations (controlling for body mass) were used to determine associations between estimated activity energy expenditure (kcal · min(-1)) from the diary and accelerometry. Differences in the magnitude of the correlations were examined using Fisher's r to z transformations. Bland-Altman procedures were used to determine concordance between the self-reported and objective estimates. Partial correlations between assessments of activity energy expenditure (kcal · min(-1)) did not differ significantly by age (13-14 years: r = 0.41; 15-16 years: r = 0.42) or weight status (normal weight: r = 0.42; overweight: r = 0.39). The magnitude of the association was significantly affected by sex (Δr = 0.11; P < 0.05). The agreement was significantly higher in males than in females. The relationship between activity energy expenditure assessed by the objective method and the 3-day diary was moderate (controlling for weight, correlations ranged between 0.33 and 0.44). However, the 3-day diary revealed less agreement in specific group analyses; it markedly underestimated activity energy expenditure in overweight/obese and older adolescents. The assessment of activity energy expenditure is complex and may require a combination of methods.     

Fundamental movement skill performance of preschool children in relation to family context

Evidence suggests the development of fundamental movement skill (FMS) is a key factor in promoting long-term physical activity. Low levels of activity among preschool children and the relationship between physical activity and the development of fundamental movement skills underline the need to determine the factors associated with children's development of such skills. As parents play an important role in the socialization process, the aim of this study was to examine correlates of family and neighbourhood characteristics as well as parental behaviour and beliefs on FMS performance in 4- to 6-year-old preschool children. Relationships between preschool children's FMS performance and family contextual variables were examined within a sample of 846 preschool children. Results identified positive associations of FMS performance with parental education, father's physical activity, transport to school by bicycle, and the high value placed by parents high on sport-specific aspects of children's physical activity. Variables negatively associated with preschool children's FMS performance included father-child interaction in TV-viewing and reading books, the high importance placed by parents on winning and performance in children's physical activity. Furthermore, the ambiguity of associations between FMS performance and parental beliefs underlined its complexity.     

Can self-esteem protect against the deleterious consequences of self-objectification for mood and body satisfaction in physically active female university students?

Using objectification theory (Fredrickson & Roberts, 1997), this study tested the interaction between self-objectification, appearance evaluation, and self-esteem in predicting body satisfaction and mood states. Participants (N = 93) were physically active female university students. State self-objectification was manipulated by participants wearing tight revealing exercise attire (experimental condition) or baggy exercise clothes (control condition). Significant interactions emerged predicting depression, anger, fatness, and satisfaction with body shape and size. For participants in the self-objectification condition who had low (as opposed to high) appearance evaluation, low self-esteem was associated with high depression, anger, and fatness and low satisfaction with body shape and size. In contrast, for participants with high self-esteem, these mood and body satisfaction states were more favorable irrespective of their levels of appearance evaluation. For female exercisers, self-esteem-enhancing strategies may protect against some of the negative outcomes of self-objectification.     

全球公共物品

面对新冠疫情的爆发,中国没有太多考虑经济问题,选择采取严格防控措施.这与西方世界流行的做法形成鲜明对比,即我们都接受某种程度的"灵活"封闭,主要目的是挽救老年人的生命.然而中国人却在创纪录的短时间内扩大了医院的容量,并带回了居住在国外的中国公民,这几乎都不在大多数西方国家的考虑之列.     

美国非本土博士与本土博士的工作角色与薪酬比较———对美国1999—2008年博士学位获得者的调查

对那些参与了美国国家科学基金会博士学位获得者调查（SDR）的非美国本土的博士学位获得者完成学业后的工资、工资增长和就业单位等方面进行了调查,调查结果显示,非美国本土的劳动者在1999年的平均年薪比美国本土的同行低,但是10年后的2008年,非美国本土的劳动者的工资超过了那些美国本土的同行.分析还发现,非美国本土与美国本土的博士10年间工资增长存在差异.差异可能是由于学科专业和市场需求等因素导致的.     

贝多芬的吻

我16岁时,由于与音乐教师发生分歧,处于某种危机之中。后来,一个著名的钢琴家艾米尔·冯·萨尔——李斯特最后一个活着的弟子,来到布达佩斯,要求我为他弹奏。他专心地听我弹了巴赫的C大调《Toccata》,并要求听更多的曲子。我全身心投入弹奏贝多芬的《Pathetique》奏鸣曲和舒曼的作品《Papillons》之中。最后,艾米尔·冯·萨尔起身,在我的前额上吻了一下。＂我的孩子,＂他说,＂在像你这么大时,我成了李斯特的学生。     

给伊丽莎白一支红玫瑰

伊丽莎白捧着一束雏菊走到院子里。 “美丽的鲜花献给……给……噢,我看我永远都说不好了!”她叫着,把雏菊扔到地上。     

多功能眼镜

多功能眼镜可不是普通眼镜,它里面隐藏着很多令人意想不到的小工具。这款眼镜最大的优点就是便于携带,而且所有你需要的功能都能立刻出现在你的眼前。本款眼镜的15种功能可以让你遇到的倒可难题都迎刃而解。     

少数民族地区公共体育服务体系构建研究--以喀什地区为个案

采用文献资料、田野调查、逻辑分析等研究方法对公共体育服务体系的概念进行了界定,并以喀什地区重点县、市为调查对象,对其公共体育服务体系构成的9个子系统进行逐一分析,提出相应对策,旨在为喀什地区公共体育服务体系的构建和完善提供理论参考。     

像春天一样

我在街角停下来吃早餐。因为有些迟了,匆忙吃了些炸面圈、喝了咖啡后,就疾步走进地铁站,跑下台阶,赶上了我常搭的那趟列车。我抓住拉环,装作看报,却不停地扫视这些挤在我周围的人。他们还是我每天看到的人。他们认识我,我也认识他们,我们却没有微笑,只是偶遇的陌生人。