That's a single correlation. It's possible there's causality. It's also possible she just had bad hips, just like I have bad knees. I used to run distance, but my dad ran a lot more than I did and has better knees at 73 than I have at 51. And my knee problems started at age 16. Sometimes joints just suck.
I need to clarify, I wrote that because the doctor told his wife to walk 35minutes every day. This means no break in between. It is
NOT the running, walking that is bad, it is the
NO BREAK in between days that is bad.
My wife did high impact aerobics for over 20 years 6 days a week when she was younger. I did not know better those days to warn her. As she approach 70, she couldn't not do those anymore, so she started walking 2 to 3miles a day( very fast walking). She walked 6 days a week, I kept telling her to do punching bags in between like very other day and only walk 3 times a week. She did not listen. That went her first hip. I am pretty sure if she listen to me, she likely won't have to replace the hip. It's very likely she already worn out her hip from 20 years of high impact aerobics 6 days a week. Genetics is not her problem, nobody in her family has to replace hip.
It's not only running, even punching bags, weight lifting and other sports are the same. You do NOT do one hour, 6 days a week. You push when you do it, it's no problem to run 5miles a session. BUT you do NO do it with no day in between to give that part of the body a chance to recover. Instead, say you run 5 miles one day, next day, you do few sets of punching bags(mainly the upper body), then the day after, you do weight training. Then the 4th day, you run 5 miles again......... The key is to let that part of the body rest and recover before pushing it again. Then, when you push, you PUSH HARD.......then rest.
People can get away a lot if they are young, you won't see the ill effect until you hit 60s or 70s. If you don't workout wisely, you wear out the cartridge and it won't recover. When you get old, they will show up.
If you in competition, you have no choice but to work hard everyday, but look at all the athletes, they all have to retire before 45, their body start breaking down!!! For us ordinary people, the goal should be how to do the same thing when you turn 60 and beyond. I read quite a bit, learning how to keep myself in reasonable shape without a lot of injuries. I am 68 and I still can keep up with much younger people.
I did a lot of reading, like for serious weight training, you do one body part ONE time a week. When you do, you go all out, then rest. Like day one is chest, you do heavy bench press, then incline press, decline press. You push until failure. Use heavy enough you only barely make like 5 to 7 reps. You do 4 sets of each. Then next day, you do say squats, you push. Day 3, you do say shoulder and biceps, Day 4, you do pull up and core exercise, Day 5, triceps, back, neck and whatever remains. Then 2 days off. Then repeat again. This is how you get stronger, more muscle and prevent injuries. You do the same thing every day, you won't last a year even if you are young.
I have been with Gold's Gym for many years. About 10 years ago, there was a young kid Chris, he was only like 26 at the time. He told me he ran 5 miles 4 days a week. I immediately told him don't, have day off in between, do something else in between. He did not listen. Guess what, now he can hardly do much running, maybe twice a week a best. He has so much knee problem at only 37 or so.
It's is NOT running or walking, just don't do daily with no rest in between. You can still run at 70, just do NOT do it everyday. I hope I clarify this.
.
