tbartman wrote:At your pace, you're burning about 600 calories per hour (or 300 calories per 30 minute session), 3-4 times per week. (according to Concept 2's math - probably a decent ballpark +/- 20%).
Assuming 3.5 workouts per week, that should give 3500 calories (one pound of fat) burned every 3-4 weeks.
Of course, popping 4 Oreo Double Stuffs after one of your workouts negates the entire caloric burn of the 30 minutes. One good muffin and latte from Starbucks negates the entire week.
I'd try to take up the workouts a bit. My dad (72 years old, 6' 0", 195 lbs) sat on my erg for the first time last month and pulled 2:00 for 4 minutes. According to Paul's Law (you can row twice as long in time for every 5 seconds slower the split) he'd be able to do 32 minutes at 2:15.
One week focus on rowing faster (aim for 2-3 seconds faster splits than the week before). The next week keep that new split, and add a couple minutes to the workout. Alternate weeks like this. Within a few months you should be up to 45-50 minutes at 2:15-2:20 and then I bet you start to notice some changes (as long as you don't snack away your efforts).
Tom
p.s. good fat burn really doesn't begin until 20+ minutes into the workout. One 60 minute workout activates fat metabolism better than two 30 minute workouts. This is why I'm suggesting trying to get up to 45+ minutes at least.
Firstly, while not an authority on the subject. However, from other posts I understand that the calorie burn from the erg is more likely to be over than under. At your rate almost half of the calories burned are for existing and going up and down the slide (i.e. not from pulling the handle). 1/3 of these would be burned if you went about a normal day. The other part depends a lot on the efficiency of the stroke and your rating, but the erg gives the same for everyone.
The assumption above is that you are eating exactly what you would require if you had not expended any energy while you were erging. Even assuming the reading is accurate, even if you assume that you previously had a constant weight and do not decrease any other exercise when you are tired from the erg, you would only need to eat 120 cals per day more to negate the benefit of the extra exercise. This would be easy even without the snacks mentioned above.
Paul's Law is what the average ergoer should be able to achieve. In practice only those aerobically fit from other activities or lacking in strength can meet this standard without aerobic training.
I understand that opinion is divided on multiple shorter workouts. If they are more intensive and performed within a few hours then there is support that the 2 can be more beneficial than one long workout. So I would recommend increasing the exercise even if to do so you can only fit in shorter sessions.
Sorry to be negative. The good news is that if you follow the suggested progressive training program and eat sensibly, you will see benefits.
Hope it goes well.
Iain