Double blind, placebo controlled trial of betamethasone nasal drops for nasal polyposis.

would be greater than on the softer surface of fells, and were absent during cycling when passive contraction of the psoas would produce less colonic compression. This mechanism may be similar to the repeti- tive mechanical trauma described to explain contusion of the bladder and haematuria in runners.5 "Jogger's trots" is a further example of the many hazards that face marathon runners. Although our patient's symptoms may be controlled with drugs, this seems contrary to the principle of guidelines for the control of abuse of drugs in sport.