The timings of pedestrian crosswalk signals are usually determined by traffic engineers, based on data from gait-speed trials, which might not take into consideration environmental factors or the special needs of elderly pedestrians. The authors carried out a study on a selected population of elderly south Florida residents (mean age 82.7 years) that showed slower crossing times with an outdoor simulated street crossing than with an indoor crossing. The gait-velocity trials indicate that timing of crosswalk signals might be inappropriate and might need readjusting to improve pedestrian safely for the elderly.
Search Results
Do We Allow Elderly Pedestrians Sufficient Time to Cross the Street in Safety?
Eli Carmeli, Raymond Coleman, H. Llaguna Omar, and Dawn Brown-Cross
Early Morning Training Impacts Previous Night’s Sleep in NCAA Division I Cross Country Runners
Courteney L. Benjamin, William M. Adams, Ryan M. Curtis, Yasuki Sekiguchi, Gabrielle E.W. Giersch, and Douglas J. Casa
impacted sleep characteristics in a variety of professional sports when compared to rest days ( Sargent, Lastella, et al., 2014 ). To date, no literature exists that has examined National Collegiate Athletic Association (NCAA) Division 1 (DI) female cross-country runner’s sleep characteristics throughout
Cross-Sectional and Longitudinal Associations Between Athlete Burnout, Insomnia, and Polysomnographic Indices in Young Elite Athletes
Markus Gerber, Simon Best, Fabienne Meerstetter, Sandrine Isoard-Gautheur, Henrik Gustafsson, Renzo Bianchi, Daniel J. Madigan, Flora Colledge, Sebastian Ludyga, Edith Holsboer-Trachsler, and Serge Brand
= .01–.058 (small), η 2 = .059–.137 (medium), and η 2 ≥ .138 (large). Finally, to gain insights into the reciprocal associations between burnout and insomnia symptoms, we tested cross-lagged panel models using the structural equation approach. As recommended by Anderson and Gerbing ( 1988 ), we
Motor Competence Levels in Young Children: A Cross-Cultural Comparison Between Belgium and Greece
Eva D’Hondt, Fotini Venetsanou, Antonis Kambas, and Matthieu Lenoir
sometimes almost neighboring countries situated within the same continent, and thus thought to have a quite similar (movement) culture ( Haga et al., 2018 ; Niemeijer, van Waelvelde, & Smits-Engelsman, 2015 ). These findings might be attributed to cross-cultural differences in educational systems and
The Temporal Ordering of Motivation and Self-Control: A Cross-Lagged Effects Model
Gro Jordalen, Pierre-Nicolas Lemyre, Natalie Durand-Bush, and Andreas Ivarsson
athletes (173 males and 98 females; aged 16–20 years, M = 17.98, SD = 0.89) attending elite sport colleges in Norway consented to participate. Athletes competed in cross-country skiing ( n = 122), biathlon ( n = 64), ski jumping ( n = 15), alpine skiing ( n = 63), and Nordic combined ( n = 7
Cross-Validation and Comparison of Energy Expenditure Prediction Models Using Count-Based and Raw Accelerometer Data in Youth
Alexander H.K. Montoye, Kimberly A. Clevenger, Kelly A. Mackintosh, Melitta A. McNarry, and Karin A. Pfeiffer
al., 2016 ; Staudenmayer et al., 2015 ) and one study in youth ( Hibbing, Ellingson, et al., 2018 ) have demonstrated that the accuracy of these models decreases when cross-validating in a new or independent sample, indicating a tendency for machine learning models to be over-fit to the data. Further
Effects of Three Types of Thought Content Instructions on Skiing Performance
Brent S. Rushall, Marty Hall, Laurent Roux, Jack Sasseville, and Amy C. Rushall
The purpose of this investigation was to assess the effects of instructions—to think particular types of thoughts—on the cross-country skiing performances of elite skiers. Eighteen members of the Canadian Cross-Country Ski Team served as subjects. Instructions were given to plan and think particular types of thoughts while skiing, namely task-relevant statements, mood words, and positive self-statements. Performances on a standard test track under thought control conditions were compared to similar efforts under “normal” (control) thinking. Thirteen subjects also recorded heart rates at the completion of each trial. A balanced order design of two replications of each condition was employed in each of the three experiments. Sixteen subjects improved in all conditions whereas two subjects improved in only one condition. Heart rates were marginally higher and statistically significant in each experimental condition compared to the control condition. Performance improvements of more than 3% were registered under each thought content condition, even though all subjects reported that they were not aware of any effort differential. That performance improvements of this magnitude could be achieved in athletes of such a caliber indicates the value of attempts to use the particular forms of thoughts employed in this study for improving cross-country skiing performance.
Thematic Analysis: The Cross-National Conflict Shifting of the NBA–China Controversy
Mu He and Weiting Tao
worth investigating the controversy to see why and how such cross-national conflict caused so much loss to the organization. The constant progress of globalization provides a variety of groups and organizations with legitimacy and sophisticated coordination networks. The NBA and its business in China
Physical Activity, Sedentary Behavior, and Educational Outcomes Among Australian University Students: Cross-Sectional and Longitudinal Associations
Lena Babaeer, Michalis Stylianou, and Sjaan R. Gomersall
their long-term success. Therefore, this study aimed to explore cross-sectional and longitudinal associations of PA, SB, and EO among first-year university students in an Australian higher education institution. In doing so, this study attempted to address gaps that have been identified in relevant
Toward Whole-of-System Action to Promote Physical Activity: A Cross-Sectoral Analysis of Physical Activity Policy in Australia
Tracy Nau, Karen Lee, Ben J. Smith, William Bellew, Lindsey Reece, Peter Gelius, Harry Rutter, and Adrian Bauman
actions, piecemeal planning, and patchy implementation. The necessary mitigation strategies involve strengthening communications across jurisdictions and forging a common strategic approach based on cross-sectoral partnerships that can enable the institutionalization of sustainable policy actions within
