نتایج جستجو برای: bicycling

تعداد نتایج: 634  

Journal: :Journal of biomechanical engineering 1999
D S De Lorenzo M L Hull

A dynamometric hubset that measures the two ground contact force components acting on a bicycle wheel in the plane of the bicycle during off-road riding while either coasting or braking was designed, constructed, and evaluated. To maintain compatibility with standard mountain bike construction, the hubs use commercially available shells with modified, strain gage-equipped axles. The axle strain...

Journal: :Journal of Environmental and Public Health 2012

Journal: :International Journal of Sport Biomechanics 1985

Journal: :Proceedings of the Institution of Civil Engineers - Municipal Engineer 2015

Journal: :Journal of Science and Medicine in Sport 2021

ObjectivesTo assess the effect of ankle, knee, and hip kinematics on patellofemoral tibiofemoral joint reaction forces (JRF) during bicycling. Secondarily, to if sex, horizontal saddle position, or crank arm length were related JRFs, after accounting for kinematics.DesignExperimental cross-sectional study.MethodsForty healthy adults (mean (SD); 28.6 (7.2) years, 24.2 (2.6) kg/m2, 17 women) bicy...

2014
Alexandra Macmillan Jennie Connor Karen Witten Robin Kearns David Rees Alistair Woodward

BACKGROUND Shifting to active modes of transport in the trip to work can achieve substantial co-benefits for health, social equity, and climate change mitigation. Previous integrated modeling of transport scenarios has assumed active transport mode share and has been unable to incorporate acknowledged system feedbacks. OBJECTIVES We compared the effects of policies to increase bicycle commuti...

Journal: :American journal of preventive medicine 2005
Marlon G Boarnet Craig L Anderson Kristen Day Tracy McMillan Mariela Alfonzo

BACKGROUND Walking or bicycling to school could contribute to children's daily physical activity, but physical environment changes are often needed to improve the safety and convenience of walking and cycling routes. The California Safe Routes to School (SR2S) legislation provided competitive funds for construction projects such as sidewalks, traffic lights, pedestrian crossing improvements, an...

Journal: :Injury prevention : journal of the International Society for Child and Adolescent Injury Prevention 1997
B A Morrongiello M D Bradley

OBJECTIVES Although many injuries happen when school age children are away from home and in the company of other children, we know surprisingly little about interpersonal influences on children's risk taking decisions. The aim of the present study was to examine the influence of older siblings' persuasive appeals on young children's decisions about engaging in behaviours that could threaten the...

2013
Maren Schmidt-Kassow Marie Deusser Christian Thiel Sascha Otterbein Christian Montag Martin Reuter Winfried Banzer Jochen Kaiser

Acute physical activity has been repeatedly shown to improve various cognitive functions. However, there have been no investigations comparing the effects of exercise during verbal encoding versus exercise prior to encoding on long-term memory performance. In this current psychoneuroendocrinological study we aim to test whether light to moderate ergometric bicycling during vocabulary encoding e...

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