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drdeca

50 kg * 50 cm * 9.8 (m/s^2)

PE = M g h

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245 joules

245J/5s == 49W

This website [1] shows several sources. The range of estimated power outputs is between 1W and 5W.

https://hypertextbook.com/facts/2003/IradaMuslumova.shtml

OP hypothesis seems to be correct.

yes, but the original question was "how many heartbeats". First source in the link says 75bpm and 2w, 245J/2w = 122.5 seconds or ~2 minutes of 75bpm, 150 beats.

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