Re: heart pumping efficiency
i would speak to a cardio doc about your limits first dirt and then get their suggestion on output and duration. for normal training you want to be in a 140-180 zone for 15-30 minutes depending on age for an increase in performance. most people's fat burning zone is between 120-140 so staying just above that would be just a tad over that. once cleared by the doc man i would work intervals of 30sec to 1 min high out put followed by 2-3min low out put on an eliptical or step mill. i use this very effectively to get my cardio up higher and i get in a good workout 3-4 times per week in 15-20 min sessions
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