I was helping a friend who was new to weight training. I told him to
breath out on the concentric part of the lift and breath in during the
eccentric part. As we are retiree's, we are not talking about his
lifting heavy weight, but enough to do 3 sets of 12-15 reps. Our gym
person came over and said that it should be the opposite. I strongly
disagreed and she showed me a strength training book that backed her up.
The example she showed me was for a concentration curl. I've only
been weight training for 6 or 7 years (and do lift relatively heavy
weights), but I'm fairly serious about it and have always thought (from
articles read and experience in the various gyms I've gone to) that one
should breath out during the concentric part of the lift. So, rather
than argue with her in front of other exercisers, I kept silent and ran
home to the computer for some further research on this issue.
I'd say that about 90% of the articles and sites dealing with weight
training and breathing technique, did indeed go with breath out during
concentric. So, is it a matter of personal preference, or is there a
definitive breathing technique during weight training? Good references
would be most helpful (e.g., published clinical trials, journal articles
from good journals, etc).
Thanks.