The study showed that 80 per cent of marathon competitors suffered kidney injury. PHOTO: REUTERS
The study showed that 80 per cent of marathon competitors suffered kidney injury due to dehydration.
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While the participants recovered within two days, findings raise concern about long-term impact of marathon running. The findings were published by the American Journal of Kidney Diseases.
A team of researchers at Yale University, led by Professor Chirag Pirakh studied participants in the 2015 Hartford Marathon.
Blood and urine samples were collected before and after the marathon.
A variety of markers of kidney injury were analysed which included proteins in urine, serum creatinine levels. Eight-two per cent of runners that were studied had Stage 1 Acute Kidney Injury (AKI) soon after the race. AKI is a condition in which kidneys fail to filter waste from the blood.
"The kidney responds to the physical stress of marathon running as if it's injured, in a way that's similar to what happens in hospitalised patients when the kidney is affected by medical and surgical complications", said lead researcher Parikh.
Previous research carried out on vigorous activities, such as military training in warm climates, has shown to damage kidneys. Research by Parikh and his team now raises questions on marathon running.
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"We need to investigate this further. Research has shown there are also changes in heart function associated with marathon running," added Parikh
"Our study adds to the story - even the kidney responds to marathon-related stress."
This story originally appeared on The Telegraph.
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