5 ms·
There's three types of muscles: smooth, skeletal, and cardiac. They share a lot in common but are very distinct to each other. Might not be an apples to apples
by jxramos 7y ago
There's three types of muscles: smooth, skeletal, and cardiac. They share a lot in common but are very distinct to each other. Might not be an apples to apples comparison because fatigue is a notion taken from our experience of skeletal muscles which is not cardiac muscle. It would be interesting to compare the energy spend of each, or rather the power each is capable of. As enduring as the heart is its likely limited in its power output because its just circulating fluid against resistance and gravity. I don't know how much energy is required for that. Bench pressing a hundred pounds, what's the power in that and how many heart beats would equal that work?
- TheSpiceIsLife 7y agoSomeone with more maths chops than me should be able to tell you how much energy it takes to lift 50kg 50cm over 5 seconds at Earth’s surface. I’d imagine it’s at least a magnitude of more than the heart would expend in 5 seconds.
- drdeca 7y ago50 kg * 50 cm * 9.8 (m/s^2) PE = M g h
- anticensor 7y ago245 joules
- ORioN63 7y ago245J/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 https://hypertextbook.com/facts/2003/IradaMuslumova.shtml OP hypothesis seems to be correct.
- bagacrap 7y agoyes, 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.
- deleted 7y ago[deleted]