Learning is not only knowledge acquirement; it is about taking action, generating results and mobilising others. An essential component of acquiring knowledge is the willingness to change, reflected in an old New Guinean proverb “Knowledge is only rumour, until it is in the muscle.” With this fundamental idea, the Dutch Association of Sports Medicine (Vereniging voor Sportgeneeskunde)—founded i...

Although the benefits of regular exercise in controlling cardiovascular risk factors have been extensively proven, little is known about the long-term cardiovascular effects of regular and extreme endurance sport practice, such as jogging, cycling, rowing, swimming, etc. Recent data from a small series suggest a relationship between regular, long-term endurance sport practice and atrial fibrill...

When I was a graduate student at the University of Pennsylvania in the late 1960s, philosopher Paul Weiss published his ground-breaking book, Philosophy of Sport. I distinctly remember a review of the book from The New York Times being posted on the graduate student bulletin board under a sign with very large letters that said, “Write on this subject only if you already have tenure.” In retrosp...

BACKGROUND Wakeboarding is an increasingly popular sport that involves aggressive stunts with high risk for lower extremity injury, including anterior cruciate ligament (ACL) rupture. Little has been reported on prevalence or mechanism of ACL injury while wakeboarding. HYPOTHESIS The prevalence of ACL injury in wakeboarding approaches that of other high-risk sports. Analyzing the mechanism of...

CONTEXT A recently updated meta-analysis of return-to-sport rates after anterior cruciate ligament (ACL) reconstruction demonstrated that 65% of athletes returned to their preinjury level of sport after surgery. The aim of this clinical review was to explore contextual factors associated with returning or not returning to the preinjury level after ACL reconstruction. EVIDENCE ACQUISITION Data...

On August 19, 2009, Caster Semenya, South African track star, won a gold medal in the women's 800-meter event. According to media reports, on the same day, the International Association of Athletics Federations (IAAF) ordered Semenya to undergo gender verification testing. This article critically assesses the main concepts and claims that undergird international sport organizations' policies re...

This paper investigates the relationship between firm productivity and four different board characteristics, including board size, board composition, board ownership and board leadership. Using total factor productivity (TFP) as a measure for productivity, we find an inverse association between board size and productivity and a positive relationship between board composition and productivity in...

President, International Network for Person-centered Medicine, President 2005–2008, World Psychiatric Association and Professor of Psychiatry, Mount Sinai School of Medicine, New York University, New York, USA President 2007–2008, World Medical Association and Board Member, International Network for Person-centered Medicine, Department of Geriatrics, Landspitali University Hospital, Reykjavik, ...

The history of physical education shows sport and medicine to have a long-standing and close relationship (Dixon et al. 1957). Indeed, if one takes into account the participation of doctors of medicine on national teams and the sporting reputations of some hospitals and medical faculties, a sympathy for sport seems to be almost a tradition of the medical profession. Perhaps the association of h...