How strong are black bears (American and Asian)?

[brobear]

yellowstonebearworld.com/what-are-some-interesting-facts-about-black-bears#:~:text=Black%20bears%20can%20knock%20over 
 
They are five times stronger than the average human. 
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How accurate is this assessment? 

[OldGreenGrolar]

If they are five times stronger than a human, the polar bear should be pound to pound stronger as it has 2/3 white fibre muscle on its upperbody strength in comparison to 38% for an American black bear.