Question 1

Does walking protect your spine from bone loss after 50?

Accepted Answer

For the vertebral spine, walking provides little to no measurable benefit. The forces involved fall within the range your bones already handle daily, so the strain-sensing cells that trigger new bone growth register walking as routine and do not respond.

Question 2

Is heavy lifting safe for people with osteoporosis?

Accepted Answer

Supervised heavy resistance training proved safe in the LIFTMOR trial of postmenopausal women with low bone mass, producing only minor adverse events and no fractures. However, anyone with diagnosed osteoporosis should only begin heavy loading under qualified professional guidance.

Question 3

Why does lifting weights build bone when walking doesn't?

Accepted Answer

Bone-sensing cells called osteocytes only trigger new bone formation when a load exceeds what the skeleton is used to. Heavy lifting delivers high, unfamiliar forces that cross this threshold, while walking stays within familiar daily loads and produces no signal.

exercise-science

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