Re: Is walking considered cardio
Good work putting in this effort.
At 80% of your max heart rate, you are at top end of aerobic (cardio) and bordering on anaerobic threshold.
Its not so much the equipment or the exercise routine that you use. But the type of muscle fibre you are exercising, which dictates whether you are doing cardio (slow twitch=cardio=aerobic, fast twitch=strength=anaerobic). Any muscle consists of both kinds (say 60%:40% ratio of slow:fast twitch)
Tho, there is the consideration that you would be training the slow twitch(cardio) muscle fibres for endurance and strength when you go at that high an intensity and length of time.
The good thing is that this intensity is putting your metabolic rate to a high level (for longer), so more calories would be being burnt.
You are probably going at that intensity levels to increase weight loss and decrease any lean tissue loss (from cardio). If you are "feeling the burn" or getting fatigued, then you probably are at the anaerobic threshold level. Which also means less chance of muscle mass loss.
Sometimes, because slow twitch fibres are less bulky, cardio training increases the proportion of slow to fast muscle fibres in a muscle, giving the impression of loss of lean body tissue. Along with loss of strength adding to that impression. It's not necessarily bad, just that your body is trying to better able you to meet needs. Looking at how you've covered you're bases (cardio and weights), I suspect you're aware of this.
At this point, try high intensity interval training ( HIIT). Assuming you are going for weight loss.
HIIT involves exercising at high intensity for a period (close to anaerobic threshold), followed by an interval or break (down to resting or warmup pace), then go back to high intensity. Do this for 15 to 20 min.
This is very good at ensuring calorie(fat) burning (many times better), as well as cutting your cardio times in half (HIIT shouldnt really be done for more than 20 min). You could continue/supplement with walking here as an extended warm down and to increase the calorie loss.
Search the web, for HIIT and heart rate training zones, for more information.
Depending on your actual exercise reasons, HIIT might be a smarter way to train for your goals. However you work it, good luck reaching them.
Last edited by painjunkie; 01-10-2004 at 10:49 AM.