Correlates of sedentary behaviour in youths with Down syndrome: the UP&DOWN study

The aim of this study was to identify potential correlates of sedentary time and television (TV) viewing time in youth with Down syndrome (DS). A total of 98 adolescents with DS (63 males) aged 11–20 years old participated in this study. Total sedentary time was measured using accelerometers, while total TV viewing time and potential correlates were measured using proxy-report questionnaire. Analyses of covariance and a stepwise multiple linear regression were performed to examine correlates of total sedentary time and total TV viewing time. Different potential correlates were associated with total sedentary time (mother age, mother TV viewing time, perceived benefits of physical activity, birth order and having nearby shops in the neighbourhood) and total TV viewing time (father TV viewing time, TV viewing time with parents, family dietary habits during watching TV and weekend days time indoor). The identification of correlates associated with sedentary behaviour, principally those considered modifiable such as social and environmental factors, may contribute to development strategies to decrease sedentary behaviour in adolescents with DS and consequently promote a healthier lifestyle.     

青少年电视体育节目收视行为调查

对青少年电视体育节目收视行为进行调查分析,发现近三成青少年经常收看电视体育节目;青少年电视体育节目的收视行为受性别因素和城乡地域因素影响;青少年的年龄-教育程度因素和日常媒介接触率对其电视体育节目的收视行为无影响.     

The Hindu ascetic as fitness instructor: Reviving faith in yoga

Indian ascetics have recognized both the boom in the fitness industry in India and the global market potential for yoga and ayurveda. Swami Ramdev's yoga programme on Aastha channel broadcast daily on Indian television and available to diasporic and Western viewers is dipping in to this new era of the fitness consumer. Drawing from available nationalist and cultural repertoires, this new-age fitness guru imagines a new India embodied in the discipline associated with the practice of yoga and offers yoga as the effective ‘Indian’ antidote to both modern lifestyles and modern pharmaceuticals. His cures for consumerism denote a longing to transform discourses of health into commoditized regimens of medicalized self-help. He prescribes yoga not only as a personal self-care and spiritual development regimen, but as a way to create a nation of fit/healthy citizens. Such television-mediated religiosity variously aids the ideological work of Hindutva both within and outside India.     

Italian women's television coverage and audience during the 2004 Athens Olympic Games

This study aimed at determining the amount of Italian television coverage dedicated to men's and women's sport and the number of male and female viewers during the 2004 Summer Olympic Games. AUDITEL-AGB Nielsen Media Research Italia provided the TV airtime data for the sport events broadcast, which were classified into three categories: men-only, women-only, and mixed-gender. The viewer sample was divided by age and gender and included three audience parameters: mean audience, share, and appreciation index. The last item is calculated from the program duration, audience permanence, and the share related to programs broadcast by other Italian channels. In particular, the appreciation index was used to investigate the relationship between (a) the viewer's and sport participants' gender and (b) the effect of Italian participation and expectations for sport achievement. The data showed that Italian male athletes outnumbered their female counterparts. Women's sport was allotted significantly less airtime than men's sport, but this imbalance was not proportional to the gender difference in the overall athletes' participation in the Games. Although the female audience represented 45% of the total, a significantly higher male mean audience and share were found. On the other hand, the appreciation of men's and women's sport events was balanced after equating for differences in media coverage. Moreover sport achievement might have a positive effect on the trend toward equality of gender coverage, indicating that a global multisport event such as the Olympic Games is central to communicating a national image and identity independently of the athletes' gender.     

A Content Analysis of Physical Activity in TV Shows Popular Among Adolescents

Purpose: Previous research has demonstrated that television has the potential to influence youth behaviors, but little evidence exists on how television depicts physical activity (PA), an important public health priority for youth. This mixed-methods study investigated depictions of television characters' participation in PA in the top 25 favorite shows ranked by a diverse sample of 2,793 adolescents. Method: Randomly selected episodes from each show were content-analyzed for PA incidents, reasons, and context and in relation to the gender and weight status of participating characters. Results: A total of 374 incidents of PA were coded across 75 episodes, with an average of 5.0 incidents per episode. Although male and female characters were equally likely to engage in at least 1 incident of PA, male characters were involved in a statistically significantly larger proportion of PA incidents than were female characters, and they were more likely to engage in PA for competitive sport. There was no statistically significant difference in engagement in PA or the proportion of PA incidents for characters coded as overweight compared with nonoverweight characters. Conclusions: Although female characters tended to be underrepresented in PA, this study reveals positive messages for how gender and weight are portrayed in relation to PA on TV.     

The effects of self-monitoring and reinforcement on exercise adherence

Two behavioral techniques were assessed to determine their effects on subjects' adherence to unsupervised exercise. The subjects were 35 moderately fit persons who had just completed an adult fitness program (AF group) and 42 sedentary individuals who were recruited through the campus newspaper (NEWS group). Participants were randomly assigned to one of three conditions: (a) self-monitoring, (b) reinforcement supplied by another person, or (c) control. All subjects were given instructions on how to exercise and asked to exercise on their own for 18 weeks. Self-monitoring subjects kept written records of their exercise behavior, while reinforcement subjects verbally reported their exercise behavior to another person who periodically administered rewards. Pre- and posttreatment tests on the NEWS group revealed no significant treatment or interaction effects. However, the reinforcement group had an 11% improvement in predicted max VO2 and a 9 bpm improvement in exercise heart rate compared to 7.8%, 5 bpm for the self-monitoring (SM) group and 5.3%, 6 bpm for the control group. T-tests indicated that reward and SM groups improved significantly on these variables, whereas the control group did not. SM (M = 2.07) and reinforcement (M = 2.29) groups reported a significantly higher frequency of exercise per week than the control (M = 1.36) group. The AF subjects were able to maintain their fitness level (with the exception of a small increase in body fat) over the 18-week period. The behavioral interventions had little differential effect on adherence by AF subjects who were already regular exercisers.     

Differences in physical fitness and gross motor coordination in boys aged 6-12 years specializing in one versus sampling more than one sport

The Developmental Model of Sports Participation proposes two pathways towards expertise in sports between 6 and 12 years of age: early specialization and early diversification. This study investigated the effect of sampling various sports and of spending many or few hours in sports on fitness and gross motor coordination. Altogether, 735 boys in three age groups (6-8, 8-10, and 10-12 years) were profiled using a fitness test battery. A computerized physical activity questionnaire was used to obtain data on sports participation. In the eldest group, (M)ANCOVA showed a positive effect of sampling various sports on strength, speed, endurance, and gross motor coordination (P < 0.05). A positive effect of many hours per week spent in sports was apparent in every age group. These data suggest an acute positive effect of many hours in sports and a latent positive effect of early sampling on fitness and gross motor coordination. Multiple comparisons revealed that boys aged 10-12 years, who spent many hours in various sports, performed better on standing broad jump (P < 0.05) and gross motor coordination (P < 0.05) than boys specializing in a single sport. Therefore, our results highlight the importance of spending many hours in sports and sampling various sports in the development of fitness and gross motor coordination.     

Validity and Reliability of the 3-Day Physical Activity Recall in Singaporean Adolescents

This study aimed at determining the amount of Italian television coverage dedicated to men's and women's sport and the number of male and female viewers during the 2004 Summer Olympic Games. AUDITEL-AGB Nielsen Media Research Italia provided the TV airtime data for the sport events broadcast, which were classified into three categories: men-only, women-only, and mixed-gender. The viewer sample was divided by age and gender and included three audience parameters: mean audience, share, and appreciation index. The last item is calculated from the program duration, audience permanence, and the share related to programs broadcast by other Italian channels. In particular, the appreciation index was used to investigate the relationship between (a) the viewer's and sport participants' gender and (b) the effect of Italian participation and expectations for sport achievement. The data showed that Italian male athletes outnumbered their female counterparts. Women's sport was allotted significantly less airtime than men's sport, but this imbalance was not proportional to the gender difference in the overall athletes' participation in the Games. Although the female audience represented 45% of the total, a significantly higher male mean audience and share were found. On the other hand, the appreciation of men's and women's sport events was balanced after equating for differences in media coverage. Moreover, sport achievement might have a positive effect on the trend toward equality of gender coverage, indicating that a global multisport event such as the Olympic Games is central to communicating a national image and identity independently of the athletes' gender.     

Steps counts among middle school students vary with aerobic fitness level

The purpose of this study was to examine if steps/day taken by middle school students varied based on aerobic fitness classification. Middle school students (N = 223; 112 girls, 111 boys) were assigned to three aerobic fitness categories (HIGH, MOD, LOW) based on results of the FlTNESSGRAM PACER test. Four weekdays of pedometer monitoring determined activity levels (steps/day). Boys accumulated significantly more steps/day than girls, 11,589 +/- 3,270 and 10,232 +/- 2,517 steps/day, respectively; F(1,219) = 16.0, p < .001, eta2 = .055. There were no differences in steps/day between grades. HIGH fit participants accumulated significantly more steps/day, F(2, 217) = 12.2, p < .101, eta2 = .101, than moderately fit and low fit participants (approximately 1,491 and ; 2,867 steps/day, respectively). Middle school students who participated in sports in addition to physical education (PE) accumulated significantly more steps/day (approximately 980 steps/day) than those participating in PE only, F(1, 219) = 10.0, p < .01, eta2 = .044. Although the relationship between physical activity and aerobic fitness was moderate (0.35; p < .01), these data demonstrated significant differences in accumulated steps/day among youth of varying aerobic fitness levels. Whether improved fitness levels were the result of additional activity or the cause of it remains to be determined. Regardless, the fittest middle school students were also the most active and accumulated a significant amount of steps/day through organized extracurricular physical activities.     

社会分层视野下西部经济欠发达地区成年人体育健身行为调查研究——以六盘水为例

通过文献资料、数理统计等方法对六盘水不同社会阶层成年人体育健身行为进行研究,得出结果：不同阶层的成年人体育健身行为是不同的,健身场所方面,大多数人都是集中在社区公共健身场地、付费健身场所、单位健身场地、学校及家里锻炼场地进行健身活动;体育锻炼频率在每周5次以上、每周3-5次;体育健身形式主要是散步或跑步、乒乓球、羽毛球;体育健身目的主要是用于强身健体、预防疾病,愉悦心情、缓解压力,增加社交机会、交流;每月体育健身费用的情况上,主要是在不花钱、50元以下、50-100元;不同社会阶层的成年人体育健身习惯不同,主要是体育锻炼习惯不清楚占多数,为促进经济欠发达地区六盘水群众体育运动蓬勃开展提供一定的理论参考,进一步提高六盘水人民的体质与健康水平,形成良好的体育健身行为提供实用参考.     

Higher screen time is associated with overweight,poor dietary habits and physical inactivity in Brazilian adolescents,mainly among girls

Objectives: To analyse the associations between high screen time and overweight, poor dietary habits and physical activity in adolescents according to sex. Methods: The study comprised 515 boys and 716 girls aged 14–17 years from Londrina, Brazil. Nutritional status (normal weight or overweight/obese) was assessed by calculating the body mass index. Eating habits and time spent in physical activity were reported using a questionnaire. The measurement of screen time considered the time spent watching television, using a computer and playing video games during a normal week. Associations between high screen time and dependent variables (nutritional status, eating habits and physical activity levels) were assessed by binary logistic regression, adjusted for sociodemographic and lifestyle variables. Results: Most adolescents (93.8% of boys and 87.2% of girls) spent more than 2 hours per day in screen-time activities. After adjustments, an increasing trend in the prevalence of overweight and physical inactivity with increasing time spent on screen activities was observed for both sexes. Screen times of >4 hours/day compared with <2 hours/day were associated with physical inactivity, low consumption of vegetables and high consumption of sweets only in girls and the consumption of soft drinks in both sexes. Conclusions: The frequency of overweight and physical inactivity increased with increasing screen time in a trending manner and independently of the main confounders. The relationship between high screen time and poor eating habits was particularly relevant for adolescent girls.     

利用流行电视节目“美国忍者”（ANW）进行体育课程设计

当今流行文化占据了美国学生大量的时间。因此,教育工作者理应承认并拥抱当前流行的电视节目、电子游戏和文化现象,并利用这些"热点",将关键的教学内容与学生的兴趣衔接起来。以美国流行的电视节目"美国忍者"(ANW)的运动单元为借鉴,根据学龄儿童青少年的特点和学校体育场馆器械的现实对流行电视节目的运动单元和理念进行整合,形成"忍者勇士"(PE-NW)体育课程;详细介绍课程的安排、计划和实施,课程包含的以障碍挑战的形式进行体育练习的方式方法、针对的学生身体素质内容以及安全原则、训练原则等内容。我国学龄儿童青少年同样处于与美国同龄人类似的环境和情况,了解国外优秀体育课程开发和设计的思路,可以为开发出适应中国国情或地域特定情况的、更有效果的体育课提供借鉴。     

Quantity,Type, and Correlates of Physical Activity Among American Middle Eastern University Students

The prevalence of hypokinetic disease among persons of Middle Eastern heritage is higher than whites and research on American young adults of this population is limited. Therefore 214 tertiary students of Middle Eastern descent self-reported their physical activity (PA) over a 1-week monitoring period using pedometers and daily activity logs. Daily step count averaged 9,256 (SD = 3,084) steps, while daily energy expenditure averaged 6.26 kcal/kg (SD = 4.92). Most participants reported no weekly engagement in sport (69.2%) and walk/run (52.8%) activities, and at least once-weekly engagement in conditioning (68.7%) activities. Moderately religious and highly acculturated men, and Muslims, and moderately/highly acculturated persons were more likely to average ≥ = 10,000 steps/day and engage in at least one sport activity per week, respectively. These findings may be related to religious and cultural issues unique to Middle Eastern American college students whose collectivist social affiliations with family and community members may facilitate or inhibit various aspects of PA behavior.     

Validation of a one-day self-report questionnaire for physical activity assessment in healthy adults

Abstract

A self-report physical activity scale (PAS) has previously been developed to document physical activity (MET-hours) undertaken by adults during an average weekday. The current study aimed to validate the PAS over 24 hours via pedometer determinations of physical activity in healthy, active adults, and to determine possible influences of gender and body mass status on this relationship. One-hundred and seven healthy university students (age 18–41 years) wore a pedometer (Yamax DigiWalker SW-700) during the waking hours of an average weekday followed by successful completion of the PAS. Relationships between the PAS and pedometer measures (steps taken and energy expenditure) were examined by Pearson's correlation coefficients. Significant (P<0.05) gender and body mass status differences were examined by two-way analysis of variance with Tukey post-hoc tests. Participants reported 48.0±10.4 MET-hours of activity, completed 11,506±4195 steps, and expended 499±227 kcal during an average weekday. Physical activity measures, except energy expenditure, were similar across groups by gender and body mass status. The total number of MET-hours was significantly associated with pedometer steps taken (r=0.375–0.568, P<0.01), and this relationship varied by gender and to a lesser extent by body mass status. The results of the current study show that the self-reported physical activity of healthy active adults was in line with the popular recommended dose of daily physical activity (10,000 steps per day) and was not influenced by gender or body mass status. Furthermore, over an average weekday, the PAS provided a simple, quick, and valid method to document physical activity undertaken by young healthy active adults that is comparable to pedometer readings.     

Interaction of sedentary behaviour,sports participation and fitness with weight status in elementary school children

Abstract

Even though the effect of single components contributing to weight gain in children have been addressed only limited research is available on the combined association of sports participation, physical fitness and time spent watching TV with body weight in children. Baseline data from 1594 children (809 male; 785 female), 7.1±0.6 years of age participating in a large school-based intervention in southern Germany was used. Height and weight was measured and body mass index (BMI) percentiles (BMIPCT) were determined accordingly. Sports participation and time spent watching TV was assessed via parent questionnaire while fitness was determined via a composite fitness test. Combined and single associations of sports participation, TV time and fitness with BMIPCT and weight status were assessed via ANCOVA as well as logistic regression analysis, controlling for age and sex. A significant interaction of TV time, sports participation and fitness on BMIPCT occurred, despite low correlations among the three components. Further, there was a combined association of sports participation and TV time on BMIPCT. TV time and fitness were also independently associated with BMIPCT. Similarly, only increased TV time and lower fitness were associated with a higher odds ratio for overweight/obesity. These results underline the complex interaction of TV time, sports participation and fitness with BMIPCT. In children, TV time and fitness have a stronger influence on BMIPCT compared to sports participation. Sports participation, however, may not reflect overall activity levels of children appropriately. More research is necessary to examine the complex interaction of various behaviours and fitness with BMIPCT.     

不同游泳运动对大鼠血清MDA、SOD、T-AOC的影响

研究目的是探讨不同持续时间和运动频率的游泳运动对大鼠血清MDA、SOD、T-AOC的影响。将2月龄雄性SD大鼠分为安静对照组、运动1h(6次/周)组、运动2h(6次/周)组和运动1h(3次/周)组,运动组进行了14周无负重游泳训练。运动后分别测定了血清MDA、SOD和T-AOC。结果表明,运动后大鼠血清MDA的变化与运动持续时间和频率有关,每周运动6次的大鼠血清MDA含量下降,而每周运动3次MDA含量没有变化;运动后大鼠血清SOD活性没有变化,但是SOD/MDA有升高的趋势;运动各组血清T-AOC的浓度均升高。提示长期适量的游泳运动,可以提高血清T-AOC,从而降低MDA含量,提高SOD/MDA比值,有利于氧自由基的清除。     

Health-enhancing physical activity and sedentary behaviour in children and adolescents

We provide a wide-ranging review of health-related physical activity in children and adolescents using a behavioural epidemiology framework. In contrast to many other reviews, we highlight issues associated with true sedentary behaviours alongside physically active behaviours. Specifically, we review the evidence concerning the links between physical activity and cardiovascular disease, overweight and obesity, psychosocial measures, type II diabetes, and skeletal health. Although the evidence is unconvincing at times, several factors lead to the conclusion that promoting physical activity in youth is desirable. A review of the prevalence of physical activity and sedentary behaviours shows that many young people are active, but this declines with age. A substantial number are not adequately active for health benefits and current trends in juvenile obesity are a cause for concern. Prevalence data on sedentary behaviours are less extensive but suggest that total media use by young people has not changed greatly in recent years. Most children and adolescents do not exceed recommended daily hours of TV viewing. Physical activity is unrelated to TV viewing. We also identified the key determinants of physical activity in this age group, highlighting demographic, biological, psychological, behavioural, social and environmental determinants. Interventions were considered for school, family and community environments. Finally, policy recommendations are offered for the education, governmental, sport and recreation, health, and mass media sectors.     

影响成年人体质的相关因素分析

通过对浙江省 4 310 9名成年人的体质测试 ,比较分析了年龄、性别、职业、生活环境、体育锻炼、社会经济等因素对成年人体质水平的影响。结果提示 ,年龄、性别、职业和生活环境都对成年人体质有一定影响 ,体育锻炼能有效提高体质水平 ,而经济发展并未促进当地成年人的体质同步提高 ,这进一步说明体质监测工作的重要性和加强健身宣传的必要性。     

Do physical activity beliefs differ by age and gender?

Age and gender are consistently related to physical activity (PA), yet theoretical explanation for these associations is scant. The present study compared the mean values and correlations of a population sample, divided by gender and age group, with respect to theory of planned behavior beliefs (behavioral, normative, and control) and PA. Participants were a sample (N=6,739) of adults (M age=49.65, SD=16.04) who completed measures of social and health demographics, theory of planned behavior beliefs, and self-reported PA. Mean analyses identified greater perceived control over PA for seniors than for young and middle-aged adults (N>.025). Belief-behavior correlations, however, were not different across age and gender in 24 of 26 tests (q<.19). Thus, PA beliefs are invariant across age and gender with the exception of mean levels of perceived control, which are lower among younger adults than older adults. Factors such as early parenthood and career demands were considered the likely reasons for differences. Overall, the evidence suggests that adapting theoretical models for specific age groups or based on gender may not be necessary.     

Broadcast media: live and in-person

Radio broadcasts brought fans into the drama of the football match in real time for the first time. The indelible impact of radio shaped the development of football fandom in the early to middle 20th century. While television is now the biggest financial supporter of top-level football, owners used to worry that TV would diminish gate receipts. Mass media are often suspected of contributing to social alienation, this chapter shows how fans use television broadcasts to create social events. This essay discusses various viewing contexts such as pubs and fan clubhouses in order to illustrate how media is used by fans to create social bonds.