[Many trendy sports conceal risks. Severe injuries--even in Nordic walking].
D001265:Athletic Injuries / Q000209:etiology*; D001642:Bicycling / Q000293:injuries; D005260:Female; D005858:Germany; D006801:Humans; D008297:Male; D010809:Physical Fitness; D012306:Risk; D012861:Skating / Q000293:injuries; D013177:Sports; D016138:Walking / Q000293:injuries*