Quantifying physical activity in first-through fourth-grade physical education via pedometry

The aim of this study was to determine pedometry steps per minute (SPM) cutscores that accurately quantify physical activity (PA) time in first- through fourth-grade physical education. A total of 257 participants were grouped in two data pools, first- and second-grade (n = 126), and third- and fourth-grade (n = 131). Systematic observation was the PA criterion instrument and pedometry was the predictor instrument. Correlations between physical activity measures were strong (r = .82-.89, p < .01). Ten min of PA and 33.33% of the lesson time engaged in PA within a 30-min class can be quantified by 61-63 SPM for first- and second-grade, and 58-61 SPM for third- and fourth-grade. IN CONCOLUSION: (a) SPM values were a valid indicator of students achieving or not achieving PA criteria, and (b) pedometry is a valid and practical tool for physical activity surveillance within physical education.     

Development of the Nine-Ball Skills Test to discriminate elite and high-level amateur golfers

Currently, there is a lack of appropriate skill assessments available for use in golf. The aim of this study was to examine the discriminative validity and the test-retest reliability of the newly developed "Nine-Ball Skills Test". Participants of two ability levels (elite, n = 14; high-level amateur, n = 16) each hit nine golf shots of differing combinations of trajectory (straight, fade, draw) and height (normal, high, low) at an individually determined target area. Each shot was scored on its percent error index from the target and whether it achieved the maximum height as required. Participants completed the test twice using a 5-iron club. The elite group scored significantly higher (P < 0.05) than the amateur group for both the first and second rounds of the test as well as the combined scores. The between-round test-retest reliability was deemed to be not acceptable, thus we propose that the test's protocol should include use of the two rounds as standard. Due to the importance of ball striking and flight control to performance in golf, the Nine-Ball Skills Test is appropriate for providing a measure of this skill component in elite and high-level amateur golfers.     

达莎·朱可娃 在35岁前改变世界

欧美社交名媛,时尚杂志《POP》主编,顶级服装设计师,Garage当代艺术中心(Garage Center for Contemporary Culture)创始人,收藏家,策展人。这个女人在她35岁之前已经取得了可以震撼艺术界的成就,她改变了俄罗斯当代艺术,被民间称之为:"艺术女沙皇"。朱可娃的一个目标就是民主,她对新荷兰岛分馆的设想就是建立一个"更民主的,要给不懂艺术的人看"的场所。没有不堪回首的童年或者是矫情的奋斗史,1 981年达莎·朱可娃出生在一个家产优渥的莫斯科家庭。她的父亲亚历山大·朱可夫(Alexander zhukov)摸爬滚打从石油大亨变成军火大亨,家财万贯。在她青年时期,朱可娃就曾向她的父亲提供艺术品收藏的建议,可惜他     

全球民间手工艺饱览 手作天堂

如今风靡全球的DIY,可以翻译为两个美好的汉字——手作。意由心生,凭手而作,无论东方还是西方,古典文明的传统中,依靠双手制成的物品,始终是最典雅而玄妙的,因为其中不但包含了技艺,更倾注了匠人的心思和感触。如果说,音乐、绘画这些艺术门类为我们描绘出了一副人间天堂的图景,那手作工艺则将天堂塑成了我们可以把玩的形状。