Organization (WHO) recommendations of at least 150 minutes of moderate or 75 minutes of vigorous PA per week. 4 , 5 The economic costs of physical inactivity were estimated to be around 53.8 billion international dollars in 2013. In addition to direct health care costs, physical-inactivity-related deaths
Susan Paudel, Alice J. Owen, Stephane Heritier and Ben J. Smith
Hongjun Yu, Xiaoping Chen, Weimo Zhu and Chunmei Cao
To examine the effectiveness of threshold and polarized models in the training organization of Chinese top-level sprint speed skaters using a 2-y quasi-experimental design.
Two years (2004–05 and 2005–06 seasons) of the Chinese national speed-skating team’s daily training load (N = 9; 5 men, 23.6 ± 1.7 y, weight 76.6 ± 4.1 kg, competitive experience 5.0 ± 0.8 y, 500-m time 35.45 ± 0.72 s, 1000-m time 71.18 ± 2.28 s; 4 women, 25.3 ± 6.8 y, 73.0 ± 8.5 kg, 6.3 ± 3.5 y, 37.81 ± 0.46 s, 75.70 ± 0.81 s) were collected and analyzed. Each season’s training load included overall duration (calculated in min and km), frequency (calculated by overall sessions), and training intensity (measured by ear blood lactate or estimated by heart rate), Their performances at national, World Cup, and Olympic competitions during the 2 seasons (2004–06), as well as lactate data measured 15 and 30 min after these competitions, were also collected and analyzed. Based on the lactate data (<2, 2–4, >4 mmol/L), training zones were classified as low, moderate, and high intensity.
The total durations and frequencies of the training load were similar across the seasons, but a threshold-training model distribution was used in 2004–05, and a polarized-training-load organization in 2005–06. Under the polarized-training model, or load organization, all speed skaters’ performance improved and their lactate after competition decreased considerably.
Training-intensity distribution based on a polarized-training model led to the success in top Chinese sprint speed skaters in the 2005–06 season.
Steven P. Hooker
The mission of the California Active Aging Project is to enable and encourage Californians over 50 years of age to lead healthier lives by promoting physical activity and creating social and physical environments that support active aging. The article briefly describes the approaches the California Department of Health Services is taking to promote physical activity to older adults. Integral to the selected approaches is the translation of research into practice, engagement of diverse agencies and organizations as partners, and strengthening of community capacity to promote physical activity.
Meni Koslowsky and Ohad Maoz
In organizational research, commitment has generally been used to predict behaviors such as turnover or absence. Little research has been done with commitment as a potential discriminator between occupations. The present study used commitment in conjunction with personality variables to differentiate between soccer and track and field referees. Data collected from 86 subjects showed that both types of variables individually and in combination significantly discriminate between occupations. In combination, commitment and personality classified more than 81 % of the referees into the correct group. Implications for other areas of research were discussed.
Mark L. Latash, John P. Scholz and Gregor Schöner
Driven by recent empirical studies, we offer a new understanding of the degrees of freedom problem, and propose a refined concept of synergy as a neural organization that ensures a one-to-many mapping of variables providing for both stability of important performance variables and flexibility of motor patterns to deal with possible perturbations and/or secondary tasks. Empirical evidence is reviewed, including a discussion of the operationalization of stability/flexibility through the method of the uncontrolled manifold. We show how this concept establishes links between the various accounts for how movement is organized in redundant effector systems.
Jason A. Bennie, Tracy Kolbe-Alexander, Jan Seghers, Stuart J.H. Biddle and Katrien De Cocker
guidelines. 3 Muscle-strengthening exercise was first included in the 2008 Physical Activity Guidelines for Americans 4 and was subsequently adopted in the World Health Organization’s (WHO) 2010 Global Recommendations on Physical Activity for Health. 5 The WHO guidelines state that adults ≥18 years should
Maria E. Hermosillo-Gallardo, Russell Jago and Simon J. Sebire
Approximately 17.4% of people in Mexico self-report physical activity levels below the World Health Organization’s guidelines and an average sedentary time of 16 hours per day.1 Low physical activity has been associated with noncommunicable disease risk factors and previous research suggests that urbanicity might be an important determinant of physical activity. The aim of this study was to measure urbanicity in Mexico and assess if it is associated with physical activity and sitting time.
A sample of 2880 men and 4211 women aged 20 to 69 was taken from the 2012 Mexico National Health and Nutrition Survey and multivariable linear regression models were used to examine the association between physical activity, sitting time and urbanicity; adjusting for sex, education level, socioeconomic status and Body Mass Index. The urbanicity score and the 7 urbanicity subscores were estimated from the CENSUS 2010.
The subscores of demographic, economic activity, diversity and communication were negatively associated with physical activity. Sitting time was positively associated with the overall urbanicity, and the demographic and health subscores.
There was evidence of associations between urbanicity and physical activity in Mexico.
Laura A. Esparza, Katherine S. Velasquez and Annette M. Zaharoff
Physical inactivity and related health consequences are serious public health threats. Effective strategies to facilitate and support active-living opportunities must be implemented at national, state, and local levels. San Antonio, Texas, health department officials launched the Active Living Council of San Antonio (ALCSA) to engage the community in developing a 3- to 5-year plan to promote active living.
A steering committee set preliminary ALCSA aims and established a multisector membership structure modeled after the US National Physical Activity Plan (NPAP). ALCSA adopted governance standards, increased knowledge of physical activity and health, and engaged in an 18-month collaborative master plan writing process.
ALCSA selected overarching strategies and evidence-based strategies for each societal sector and adapted strategies to the local context, including tactics, measures of success, and timelines. Community and expert engagement led to a localized plan reflecting national recommendations, the Active Living Plan for a Healthier San Antonio.
Multisector collaborations among governmental agencies and community organizations, which were successfully developed in this case to produce the first-ever local adaptation of the NPAP, require clearly defined expectations. Lessons learned in ALCSA’s organizational and plan development can serve as a model for future community-driven efforts to increase active living.
Paul A. Estabrooks, Elizabeth H. Fox, Shawna E. Doerksen, Michael H. Bradshaw and Abby C. King
The purpose of this study was to determine the feasibility and effectiveness of an on-site physical activity (PA) program offered with congregate meals. Study 1 surveyed meal-site users on their likelihood to participate. Study 2 used meal-site-manager interviews and site visits to determine organizational feasibility. Study 3, a controlled pilot study, randomized meal sites to a 12-week group-based social-cognitive (GBSC) intervention or a standard-care control. Studies 1 and 2 indicated that most meal-site users would participate in an on-site PA program, and meal sites had well-suited physical resources and strong organizational support for this type of program. In Study 3, GBSC participants increased their weekly PA over those in the control condition (p < .05, ES = .79). Results indicated that changes in task cohesion might have mediated intervention effectiveness. These studies demonstrate that a PA program offered in this venue is feasible, is effective in promoting PA, and could have a strong public health impact.
Katharina Diehl, Ansgar Thiel, Stephan Zipfel, Jochen Mayer, Alexia Schnell and Sven Schneider
The authors’ aim was to examine the prevalence of (daily) dietary-supplement (DS) use among elite adolescent athletes and to differentiate use by different types of DS according to their function. Data were analyzed for associations between users of these DS types, sociodemographic, sport-specific characteristics, and opinion on the need for DS. In addition, sources of supply and information were examined. In the framework of the GOAL Study, 1,138 German elite adolescent athletes (14–18 yr) answered questions about DS. The data were analyzed to identify groups at risk for using DS after a classification by supplemental function. Of the young athletes, 91.1% reported DS use during the previous month. (Daily) DS use was significantly associated with sex, kind of sport, and the weekly duration of sporting activity. Furthermore, some athletes were required to use DS by their sporting organization. DS use was more likely in these athletes than in those whose sporting organizations had no such requirement. Overall, DS with short- and long-term supplemental function were mostly associated with the use of magnesium. However, DS with medium-term muscle-building function played an important role among daily users. The main source of information about DS was coaches; main source of supply was parents. Professional education is urgently needed, as 9 out of 10 athletes used DS, and strong positive opinions toward the use of DS were present, particularly in the DS users.