Originally posted by: edcarman
Originally posted by: irishScottJust depends on what you want out of the workout.
Rowing is marketed as a great low impact whole body workout (which it is). The problem is that if you don't have proper technique, there is a pretty good chance that you'll pick up lower back injuries when training at higher intensities, regardless of rate or resistance setting.
Most non-rowers achieve high rate by 'shooting the slide'. When they start the stroke, their backside slides back quite a way before their shoulders start moving. A large amount of their initial leg drive goes into stretching their lower back. They then finish off with a very short stroke mainly using their arms - the handle doesn't move that far and they can get a high rate. In this situation, the higher the resistance, the higher the stretching of the back muscles from the leg drive.
In pretty much any cardio activity, what matters is intensity and duration. How you achieve the intensity (high rate, low resitance or low rate high resistance) is pretty much immaterial from your heart's point of view. What matters is picking an intensity that you can sustain for the duration of the exercise.
Maximum fat burning occurs at heartrates exceeding 90-95% maximum HR. The problem is that you generally can't sustain this effort for very long, and certainly not for multiple sessions on succesive days.
A good balance between intensity and duration is to work at around 83-88% MHR for 30 minutes or so (or slightly lower HR if you want to go for the full hour).
]Rowing at 70-80% MHR for an hour is a good fat burning and fitness workout, but...
anyone who's done it will know that it's boring as hell, your bum starts to ache 2/3 of the way in and there's no way to scratch your balls, no matter how much they're itching!
Breaking it up into two sets of 30min at a slightly higher intensity allows you time for that all important scratch.
Ratewise, you don't really need to rate much more than 24-26 at 4-6 resistance with good technique, for a typical cardio session (this changes if you're doing sessions to improve speed, power etc.)
The sad thing about rowing at the gym is that it is not that difficult to learn the technique. You can teach someone reasonable technique in one or two supervised sessions of 15 minutes. The problem I've seen is that most personal trainers dump their clients on the machine and tell them to row for ten minutes while they meander off to make coffee.