I was hoping this thread was about science, not anecdote...
Below is a copy from
http://www.pponline.co.uk/encyc/strengt ... hletes-843:
Actual research concerning strength training for rowing hasn't exactly been exhaustive, with the best study probably being the one carried out by researchers at the University of Alberta and the University of Victoria in Canada in the late 1980s.
In that study, 18 equally strong male college oarsmen (average age 22) were divided into three groups - a high-velocity (and low-resistance) strength training group, a low-velocity (and high- resistance) strength training group, and a control group which carried out no strength training at all. The first two groups strength-trained four times a week, and each workout consisted of 'circuits' of 12 different exercises which worked the key muscles involved in rowing (two to three circuits were completed per training session). Within a circuit, each exercise was carried out continuously for two 20-second intervals (with a 20-second rest between intervals) before an individual moved on to a new exertion. The high- velocity, low-resistance trainers completed about 18 to 22 reps in 20 seconds, while the low- velocity, high-resistance athletes finished six to eight closer-to-maximal repetitions during each 20-second period.
After five weeks of such training, the high- velocity rowers improved their strength during high-velocity movements, while the low-velocity oarsmen improved their strength during low- speed motions (surprise, surprise!). However, high-velocity athletes were not stronger while doing low-velocity movements, and low-velocity ones were not stronger during high-velocity actions (again, surprise, surprise!).
These results are in exact concordance with the critically important specificity of training principle, which basically says that you get better at doing only those things which you specifically practise in training. To use a running example, training fast makes you a faster runner, while running loads of relatively slow miles makes you skilled in the fine art of running slowly.
Unfortunately, actual rowing performances were not measured in this Canadian study. However, all 18 oarsmen did climb aboard rowing ergometers for tests which evaluated their lactate productions and power outputs during 15 seconds of maximal rowing and 90 seconds of full-tilt effort. These check-ups revealed a slight trend toward improved power outputs (and greater lactate production) in the high-velocity trainers after the five weeks of training, but the changes were not statistically significant. The low-velocity trainees also failed to hike power, and the control subjects actually lost power over the five-week period.