Bad in the long run

The Weekend Australian - Magazine - - INBOX -

As a gen­eral clin­i­cian over many years in fre­quent con­tact with sports­peo­ple and run­ners, I am con­vinced that biped hu­mans should only run short dis­tances (“See how we run”, May 12-13). In marathons, 42km equates to 42,000 ver­ti­cal thumps to your spine and 21,000 to each knee; no won­der the ar­tic­u­lar car­ti­lage and spinal discs rapidly de­gen­er­ate, and they don’t re­pair when torn or split. Sev­eral run­ners have told me they en­joy the en­dor­phin rush that comes with long runs, but this is of­ten off­set by the post-run knee dis­com­fort – a warning sign of car­ti­lage dam­age. Dr Doug Mcken­zie Brighton, Vic

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