calling all orthopedic doctors

[Freshgeardude]

hello i have a problem i want to get a product called powerisers but my dad says that its to dangerous for your knees because they can bend the wrong way.if you dont know what powerisers then check this out if you are an orthopedic doctor and knows or owns this product enough to convince my dad that they are ok for me to use i would really much appreicate it.
this is the whole discussion on the topic

 

[thescreensavers]

nice linking noob

 

[Freshgeardude]

bump

 

[eits]

they're not bad for you because they decrease the impulse on your joints by extending the duration of time that your step hits the ground. however, i don't know whether or not it's GOOD for you. i just know it's not bad for you.

the only dangerous thing is that you can trip and fall and hurt yourself more than you normally would because you'd have an increased rotational inertia... bigger they are, harder they fall kinda thing. you aren't as agile with those things on than you are with regular shoes.

 

[BigJ]

Originally posted by: eits
they're not bad for you because they decrease the impulse on your joints by extending the duration of time that your step hits the ground. however, i don't know whether or not it's GOOD for you. i just know it's not bad for you.

the only dangerous thing is that you can trip and fall and hurt yourself more than you normally would because you'd have an increased rotational inertia... bigger they are, harder they fall kinda thing. you aren't as agile with those things on than you are with regular shoes.

The problem his father is probably worried about is how much strain it puts on the knee ligaments.

Especially for new users, I could see how easy it would be to tear an MCL, ACL, or PCL.

 

[Freshgeardude]

Originally posted by: BigJ

Originally posted by: eits
they're not bad for you because they decrease the impulse on your joints by extending the duration of time that your step hits the ground. however, i don't know whether or not it's GOOD for you. i just know it's not bad for you.

the only dangerous thing is that you can trip and fall and hurt yourself more than you normally would because you'd have an increased rotational inertia... bigger they are, harder they fall kinda thing. you aren't as agile with those things on than you are with regular shoes.

The problem his father is probably worried about is how much strain it puts on the knee ligaments.

Especially for new users, I could see how easy it would be to tear an MCL, ACL, or PCL.

how else can you injure these ligaments( MCL,ACL,OR PCL) like bike riding or how about jumping on a trampolene

 

[BigJ]

Originally posted by: freshgeardude

Originally posted by: BigJ

Originally posted by: eits
they're not bad for you because they decrease the impulse on your joints by extending the duration of time that your step hits the ground. however, i don't know whether or not it's GOOD for you. i just know it's not bad for you.

the only dangerous thing is that you can trip and fall and hurt yourself more than you normally would because you'd have an increased rotational inertia... bigger they are, harder they fall kinda thing. you aren't as agile with those things on than you are with regular shoes.

The problem his father is probably worried about is how much strain it puts on the knee ligaments.

Especially for new users, I could see how easy it would be to tear an MCL, ACL, or PCL.

how else can you injure these ligaments( MCL,ACL,OR PCL) like bike riding or how about jumping on a trampolene

You can injure them basically doing anything. All it takes is a quick jerk of the knee in the wrong way.

Full-Contact sports (football, rugby), sports in where there is quick cutting or jumping (basketball, soccer, tennis), ice skating, rollerblading, etc.

 

[Freshgeardude]

Originally posted by: BigJ

Originally posted by: freshgeardude

Originally posted by: BigJ

Originally posted by: eits
they're not bad for you because they decrease the impulse on your joints by extending the duration of time that your step hits the ground. however, i don't know whether or not it's GOOD for you. i just know it's not bad for you.

the only dangerous thing is that you can trip and fall and hurt yourself more than you normally would because you'd have an increased rotational inertia... bigger they are, harder they fall kinda thing. you aren't as agile with those things on than you are with regular shoes.

The problem his father is probably worried about is how much strain it puts on the knee ligaments.

Especially for new users, I could see how easy it would be to tear an MCL, ACL, or PCL.

how else can you injure these ligaments( MCL,ACL,OR PCL) like bike riding or how about jumping on a trampolene

You can injure them basically doing anything. All it takes is a quick jerk of the knee in the wrong way.

Full-Contact sports (football, rugby), sports in where there is quick cutting or jumping (basketball, soccer, tennis), ice skating, rollerblading, etc.

well have you seen them in person because if you just saw a picture and made a conclusion that doesnt help. doest the spring work like a cars suspension, the spring conpresses (kintetic energy) until the amount Potential Energy is greater bouncing back making your ride smoother. so in simpler word wouldnt the fiberglass spring in the poweriser compress until the spring absorbes the energy and bends back? that makes sense to me

 

[Freshgeardude]

seriously what do you guys think

 

[Freshgeardude]

bump