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Karen C. Smith, Griffin L. Michl, Jeffrey N. Katz and Elena Losina

characteristics that can act as barriers to activity include high impulsivity (discounting) and low barrier self-efficacy. 11 – 13 Among environmental factors, it is well documented that meteorologic factors (weather conditions) affect physical activity levels. 14 , 15 Increased rainfall, lower temperatures

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Joe Feinglass, Jungwha Lee, Pamela Semanik, Jing Song, Dorothy Dunlop and Rowland Chang

Background:

This study analyzes Chicago-area weather effects on objectively measured physical activity over a 3-year period among a cohort of 241 participants in an on-going arthritis physical activity trial.

Methods:

Uniaxial accelerometer counts and interview data were analyzed for up to 6 weekly study waves involving 4823 days of wear. The effects of temperature, rainfall, snowfall and daylight hours were analyzed after controlling for participant characteristics, day of the week, and daily accelerometer wear hours in a mixed effects linear regression model.

Results:

Daylight hours, mean daily temperature < 20 or ≥ 75 degrees, and light or heavy rainfall (but not snowfall) were all significantly associated with lower physical activity after controlling for the significant effects of weekends, accelerometer wear hours, age, sex, type of arthritis, employment, Hispanic ethnicity, obesity, and SF36 physical and mental health scores.

Conclusions:

The cumulative effects of weather are reflected in a 38.3% mean monthly difference in daily counts between November and June, reflecting over 3 additional hours of sedentary time. Physical activity promotion programs for older persons with chronic conditions need lifestyle physical activity plans adapted to weather extremes.

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Peter Gould and Nancy Jo Greenawalt

The cross-disciplinary perspectives of the physical educator and human geographer are used to illustrate methodological approaches to the analysis of team games. Spatial transformations of player configurations raise questions of two-dimensional, or Euclidean, regression, from which residuals create inter-pretable vector fields. Asymmetries in team play raise questions of the “winds of influence” blowing through appropriate spaces as graphic summaries of team dynamics. The meteorological analogy is explored further as teams create pressure surfaces, or forcing functions, which control the “flow of the game.” Finally, an algebraic topological language of structure is suggested to describe the dynamics of player-polyhedra by defining a relation upon a set of players engaged in a game.

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Lauren McCoy

that Penn State’s outstanding Department of Meteorology was dominated by football, as in being there principally to predict the weather (which it did) for Penn State football games, was pure insult” (p. 49). The Department of Meteorology along with the other examples Smith provides may not exist solely

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Kevin Lanza, Brian Stone Jr, Paul M. Chakalian, Carina J. Gronlund, David M. Hondula, Larissa Larsen, Evan Mallen and Regine Haardörfer

, Hyder M , Sara PA . Meteorological conditions are associated with physical activities performed in open-air settings . Int J Biometeorol . 2008 ; 52 ( 3 ): 189 – 197 . PubMed ID: 17566789 doi: 10.1007/s00484-007-0110-y 21. Togo F , Watanabe E , Park H , Shephard RJ , Aoyagi Y

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Blake D. McLean, Kevin White, Christopher J. Gore and Justin Kemp

recalled from the Australian Government Bureau of Meteorology (Melbourne [37.81°S, 144.97°E], Gold Coast [27.94°S, 153.43°E]) and National Oceanic and Atmospheric Administration (Flagstaff, AZ [35.15°N, 111.68°W], Park City, UT [40.62°N, 111.53°W]) databases (Table  1 ). Table 1 Melbourne and Training Camp

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Rajni Rai, Michelle I. Jongenelis, Ben Jackson, Robert U. Newton and Simone Pettigrew

during the data collection period (2014–2016) was 15 °C in winter, 25 °C in summer, 19 °C in spring, and 19 °C in autumn ( Australian Bureau of Meteorology, 2017 ). Seasonality of the data collection period for individual participants was thus categorized as a binary variable representing more extreme

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Rodrigo Ramirez-Campillo, Cristian Alvarez, Felipe García-Pinillos, Paulo Gentil, Jason Moran, Lucas A. Pereira and Irineu Loturco

(local Meteorological Service). A new size 5 soccer ball (Nike Seitiro, Zhejiang, China, certified by the Fédération Internationale de Football Association) was used for all measurements. The 2400-m TT Test As previously recommended ( 45 ), the 2400-m TT test was used because of its multifaceted demands

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Amelia J. Carr, Laura A. Garvican-Lewis, Brent S. Vallance, Andrew P. Drake, Philo U. Saunders, Clare E. Humberstone and Christopher J. Gore

– 355 . PubMed ID: 26917695 doi:10.1152/japplphysiol.00579.2015 26917695 10.1152/japplphysiol.00579.2015 24. Bureau of Meteorology . http://www.bom.gov.au/ . 2018 . Accessed September 04, 2018. 25. Spencer M , Fitzsimons M , Dawson B , Bishop D , Goodman C . Reliability of a repeated

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Benjamin M. Jackson, Ted Polglaze, Brian Dawson, Trish King and Peter Peeling

-2440(01)80004-9 11339490 10.1016/S1440-2440(01)80004-9 18. Australian Government. Bureau of Meteorology . Perth in May 2016: a cool, wet month . 2016 . http://www.bom.gov.au/climate/current/month/wa/archive/201605.perth.shtml . Accessed October 26, 2016. 19. Varley MC , Jaspers A , Helsen WF , Malone JJ