question about sprinting/hiit outside and inside

[jonwilson]

i sprinted outside on monday night and i tried again thursday night and i just couldnt do it. my legs were still sore from sprinting monday night. when i did hiit on my stationary bike last night, i had no problem. i dont fully understand this. i know sprinting outside is more effective than say doing it on a stationary bike, but why can i do it on a bike and not outside? can anyone help me out? surely sprinting on a bike is not as effective as doing it outside, but it cant be that much lower than doing it outside. also, do you think loweing the recovery period is more effective than longer rest periods when doing hiit/sprinting? i found this interesting article about sprinting. let me know what you think of it, thanks.
http://health-fitness-solutions.blog...un-sprint.html

The Definition of Sprinting

Based on the misleading articles and workouts I've seen posted all over the web, I'd better define what sprinting is. Sprinting is not just running faster than a jog. You cannot "sprint" for 30-60 second or even more with an equal recovery for 6-10 repetitions as some fitness "experts" advise. This is an anaerobic or interval workout. It's far better for you than plodding along the road or on a treadmill, but it's not sprinting and won't give you the benefits mentioned above. Sprint means "to race or move at full speed." Think playing tag or running to first base after a hit. Sprint workouts feature short, high-intensity repetitions and long, easy recoveries.

what does everyone think of this???

[blyznatch]

It's Monday morning now. Did interval sprints Thursday morning. Quads are still hurting. Dont really have any helpful words. Just wanted to say sprinting is painful but I love it.

[Foadon]

hiit on a bike is less stressful on the legs & joints than sprinting outside. Your weight is more supported on a bike, also why running will burn more calories. If you're sore afterwards I guess a few things to try is either do a less intense workout, or build up your workouts. You could try icing your legs up after, but thats abit extreme.
If you're new to running, it might also just be your legs not being used to it. Just keep going for a while and see if it improves. For example when I started running i could jog for 2-3minutes before my calves gave out from extreme pain (was also more overweight then). Now, they don't hurt at all anymore running at same speed

don't go running again when you're still sore though, bad things waiting to happen then. You can try stretching before & after aswell

[adamrochester]

hiit cardio should be 30 seconds all out 4 mins 30 rest - ie walking