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.
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Do We Allow Elderly Pedestrians Sufficient Time to Cross the Street in Safety?
Eli Carmeli, Raymond Coleman, H. Llaguna Omar, and Dawn Brown-Cross
Age, Sex, and Training Specific Effects on Cross-Education Training
Aymen Ben Othman, Saman Hadjizadeh Anvar, José Carlos Aragão-Santos, Anis Chaouachi, and David G. Behm
Cross-education refers to the transfer of training effects (ie, motor control, strength, endurance, skill, and acceleration) following a period of unilateral exercise training of a trained limb to a homologous untrained limb ( 17 , 19 , 20 , 25 , 32 ) and has been identified in various populations
Pacing Strategy and Tactical Positioning During Cyclo-Cross Races
Arthur H. Bossi, Ciaran O’Grady, Richard Ebreo, Louis Passfield, and James G. Hopker
Cyclo-cross is a competitive discipline that demands from the athletes a mix of road and off-road cycling and running abilities. Races consist of many laps (∼1 h in total) of a short course (∼3 km) comprising pavement, sand, wooded trails, grass, steep hills, and built obstacles. Often, the circuit
Effects of Subsensory Noise and Fatigue on Knee Landing and Cross-over Cutting Biomechanics in Male Athletes
Xingda Qu, Jianxin Jiang, and Xinyao Hu
completely understood. 10 Given that subsensory noise is able to enhance the sensitivity of the human proprioception, it is of interest to examine how subsensory noise affects ACL injury risk in a fatigued state. Landing and cross-over cutting during sports activities impose high additional loads on the
Is There an Optimal Pole Length for Double Poling in Cross Country Skiing?
Franziska Onasch, Anthony Killick, and Walter Herzog
Cross country ski racing is divided into classic and skating races, which both require different skills from athletes. One thing they have in common is the double poling action, occurring in combination with skating push-off or classic striding patterns, or in isolation, as the only propulsive
The Interval-Based Physiological and Mechanical Demands of Cross-Country Ski Training
Pål Haugnes, Jan Kocbach, Harri Luchsinger, Gertjan Ettema, and Øyvind Sandbakk
Cross-country (XC) skiing is regarded as one of the most demanding endurance sports and involves whole-body exercise of varying techniques through racing times ranging from a few minutes to several hours. The competition terrain fluctuates between uphill, flat, and downhill sections, in which the
Residual Force Enhancement in Humans: A Systematic Review
Neil Chapman, John Whitting, Suzanne Broadbent, Zachary Crowley-McHattan, and Rudi Meir
a sarcomere is based on a pioneering model by Huxley 7 ; the so-called “cross-bridge theory.” According to this prevailing theory, myosin heads attach to the actin filament, pulling it toward the M-line in the center of the sarcomere, thereby producing active force as the sarcomere shortens. Besides
Nutritional Intake in Elite Cross-Country Skiers During Two Days of Training and Competition
Amelia Carr, Kerry McGawley, Andrew Govus, Erik P. Andersson, Oliver M. Shannon, Stig Mattsson, and Anna Melin
Cross-country sprint skiing competitions involve four very high-intensity efforts of 2–4 min, performed over 3–4 hr, commencing with a qualification heat completed as an individual time trial and followed by three subsequent head-to-head heats separated by ∼20–25 min ( Sandbakk et al., 2011
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
