In this paper we investigate how attitudes to health and exercise in connection with cycling influence the estimation of values of travel time savings in different kinds of bicycle environments (mixed traffic, bicycle lane in the road way, bicycle path next to the road, and bicycle path not in connection with the road). The results, based on two Swedish stated choice studies, suggest that the v...

BACKGROUND The epidemiology of rapid-cycling bipolar disorder in the community is largely unknown. AIMS To investigate the epidemiological characteristics of rapid-cycling and non-rapid-cycling bipolar disorder in a large cross-national community sample. METHOD The Composite International Diagnostic Interview (CIDI version 3.0) was used to examine the prevalence, severity, comorbidity, impa...

BACKGROUND This study investigated the relationship between individual and neighborhood environmental factors and cycling for transport and for recreation among adults living in Perth, Western Australia. METHODS Baseline cross-sectional data from 1813 participants (40.5% male; age range 18 to 78 years) in the RESIDential Environment (RESIDE) project were analyzed. The questionnaire included i...

The principle and kinetics of enzymatic cycling are described. The enzymatic cycling reaction is catalyzed by a couple of enzymes and amplifies stoichiometrically a pair of substrates participating in the reaction. Many biological substances can be converted quantitatively to substrates that can be amplified and measured by cycling reactions. Three cyclings in routine use (NAD, NADP and CoA cyc...

BACKGROUND Increasing active transport behavior (walking, cycling) throughout the life-course is a key element of physical activity promotion for health. There is, however, a need to better understand the correlates of specific domains of walking and cycling to identify more precisely at-risk populations for public health interventions. In addition, current knowledge of interactions between dom...

There has been a world-wide surge of interest in cycling over the last 10 years of which London has seen a continuous growth in cyclists and investment in infrastructure that has resulted in the introduction of the Barclays Cycle Superhighway and Barclays Cycling Hiring Scheme. Despite the investment in cycling infrastructure, there has been little understanding of cycling activity patterns in ...

This study investigated the relationship between low back pain (LBP) and training characteristics in recreational cyclists. Purposive sampling was used to recruit sixty-six recreational cyclists from nine cycling clubs. Participants completed a survey reporting training characteristics and LBP behaviour during a usual week of cycling. This included percent of time spent cycling in three common ...

OBJECTIVES To assess changes in walking and cycling in the United States between 2001 and 2009. METHODS The 2001 and 2009 National Household Travel Surveys were used to compute the frequency, duration, and distance of walking and cycling per capita. The population-weighted person and trip files were merged to calculate the prevalence of any walking and cycling and of walking and cycling at le...

In this paper, the research object is the cycling equipment which is a common fitness equipment. The dynamic characteristics of the cycling equipment were optimized in a virtual prototype, and analysis was carried out on its structural mechanical characteristics and dynamic performance, etc. The dynamic characteristics of the cycling equipment were obtained through modal, random response and ha...