Is 1 hr of cardio too much?

I have an arthritic left knee, so i cant do HIIT cardio, so i do about an hr a day on a cycle. Is that too much?

Also are the calorie counters about right? It says i burn about 500 cals per hr.

Thank you for any input... :D

1 Hour is not to much IMO.

What are you goals? If fat burning is among them then 1 hr. is good.

1 hour is too much..
and 500 cal dosent seem much you could do twise as much on the elliptical machine

just do it if you have enough time and energy.

I really want to improve my cardio but i'm too lazy :(

1 hour is fine.

1 hour is fine. i do spinning 4 times a week and that is an hour a class

The bike isn't the best. It's not so much the time as the quality of cardio. If your knee can handle the rowing machine, that would be far superior as it is engaging your entire body. Or the arc trainer, which looks like a short elliptical. It only takes 20 minutes or so to kick in your fatburning mechanism. One hour is overkill. 30-45 minutes is ideal, then don't eat for about an hour afterward as you will still be burning fat. Kettlebell swings and high pulls would be ideal.

First off... those calorie counters don't mean anything in terms of actual calories burned and they absolutely cannot be compared between different types machines. They are just a rough estimate. The only thing you can use the calorie counter for is as a measure of work on a specific type of machine by a specific brand.

Second, I would not reccomend using the rowing maching (ergometer) unless you had some coaching by someone who actually knows how to do it right, most likely someone with crew experience. There is a lot of technique to doing it right and doing it incorrectly while going hard is a good way to cause some stress injuries. But if done correctly, the erg is the hardest form of cardio I have ever had the displeasure to experience :) I am having painful memories of my crew days even thinking about it hehe.

Doing cardio for an hour is fine if that's what you have to do.

Are you cutting or bulking?

I think that someone already hit it when they said "what are your goals?" Until we know that answer all judgement calls on what is most efficient, or best, is complete crap.

Its fat burning, my diet is pretty clean, i do a bunch of different dumbell workouts. This is all done in the home also, i dont have access to a gym. I've lost about 60lbs so far, just wondering if i was possibly overtraining.

Also, i keep my heart rate in the 140 area, is that optimal?

[QUOTE=Fanatik;13007955]1 hour is too much..
and 500 cal dosent seem much you could do [b]twise[/b] as much on the elliptical machine[/QUOTE]

twice*

[QUOTE=r0817;13019704]Also, i keep my heart rate in the 140 area, is that optimal?[/QUOTE]

Depends on age really. I am 39 and when I do my cardio (for fat burn) I keep my heart rate between 138 and 143. I try to keep it at 138 the entire time. The elliptical is a dang good cardio machine IMO. I cant do the treadmill or stepper so the elliptical works out perfectly and kicks major butt.

[QUOTE=r0817;13019689]Its fat burning, my diet is pretty clean, i do a bunch of different dumbell workouts. This is all done in the home also, i dont have access to a gym. I've lost about 60lbs so far, just wondering if i was possibly overtraining.[/QUOTE]
You should be fine. Congrats on your success so far!

Thanks for everything... Im off to my bike...