OBJECTIVE To investigate differences in moderate-to-vigorous physical activity (MVPA) from school-travel between adolescents in urban and suburban neighbourhoods and to describe its relative contribution to MVPA on school days. METHODS We measured 243 adolescents (51% male, grades 8-10) from Vancouver's walkable downtown core and its largely car-dependent suburb Surrey (fall 2011, 2013). We e...

It is well known that physical exercise requires the coordinated function of the heart, lungs and peripheral and pulmonary circulation to support the increased demands of contracting muscles. This evidence is well represented by the so-called Wasserman’s gears representing the functional interdependence of the physiological components of the system and the mechanisms for coupling internal (i.e....

"I think the use of the term 'quality of life' in the title of the journal Quality of Life Research' has contributed to the confusion about the measures described within the journal. Health status measures are often referred to as quality of life measures when they are actually measuring quality of health not quality of life. There are very important differences between the two and when those d...