Yes I know not another IP or OOP Debate but I just don't get it. First a little background information.
Last fall my wife and I went 90 degrees OOP and seemed to find that it made us more productive. At the time the ride felt smoother and we picked up our average speeds slightly. We stayed 90 degrees OOP until we got new peddals last weekend. We switched to Speedplay Zeros and since we both start with 1 foot down she wanted to ride IP until we both got used to them. Unfortunately something seemed to come up every day this week and we weren't able to get a ride in until yesterday morning. We got a later start then we would have prefered and it was pretty warm by the time we got home. We both agreed it was not one of our best rides, we felt tarrible, and that it was because we were in phase. Then we looked at our garmin stats. Same with today. It rained this morning so we didn't get out until this afternoon but our average speed for that out and back was again higher than usual.
Finally riding in phase both of our heart rates are higher. We seem to be able to spin easier but when looking at the stats afterwards she averaged 10 BPM higher and I was about 7 BPM higher. Her heart rate is slower than mine both when resting and during erobic activity.
So I don't get it. Logic tells me that when riding out of phase that the constant power to the rear wheel would make us more efficient. Could it be that the combined power serge of 2 legs at once is actually more efficient then the slow steady push of a leg constantly in it's power stroke and 3 legs without draging through their deadzones? I make a practice of spinning not mashing and she is getting better at but no matter how good you are at spinning your dead leg is still going to provide some obstruction.