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Particle-volume size distribution curves for the urines of a group of male ultra-marathon runners have been recorded and show the same features as those reported in an earlier study involving standard marathon runners. It is again suggested that these features indicate risk of urinary stone formation although this does not appear to be increased by the more stressful ultra-marathon. Distribution curves obtained for female runners closely resemble those recorded for controls, thus rendering it impossible to assess their risk profile. A commonly observed feature of both the male and female urines was the presence of various urinary salts. Profuse calcium oxalate dihydrate crystals were detected in some samples 11 days after the race. It is suggested that entrapment sites within the urinary tract have a selective specificity for these crystals while urinary salts pass through unhindered.
A L Rodgers, and
K G Greyling, and
R A Irving, and
T D Noakes
January 1986,
Urological research,
A L Rodgers, and
K G Greyling, and
R A Irving, and
T D Noakes
January 1992,
Urological research,
A L Rodgers, and
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T D Noakes
January 2019,
Psychology research and behavior management,
A L Rodgers, and
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December 2007,
The Journal of sports medicine and physical fitness,
A L Rodgers, and
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July 2002,
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A L Rodgers, and
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January 1993,
Nephron,
A L Rodgers, and
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T D Noakes
September 1994,
Medicine and science in sports and exercise,
A L Rodgers, and
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T D Noakes
July 2004,
The American journal of cardiology,
A L Rodgers, and
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T D Noakes
May 2019,
Scandinavian journal of medicine & science in sports,
A L Rodgers, and
K G Greyling, and
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PloS one,
