For those that buy into the one-hour rule
Stopanni had a similar article on this paper in Flex. Overall I think people are making way to big of deal over an acute study (much in the way they use to for acute testosterone responses). Even the authors say the correlation is weak.
Eur. J. Appl. Physiol., 2012 vol. 112(7) pp. 2693-702
Associations of exercise-induced hormone profiles and gains in strength and hypertrophy in a large cohort after weight training
West, DW; Phillips, SM
The purpose of this study was to investigate associations between acute exercise-induced hormone responses and adaptations to high intensity resistance training in a large cohort (n = 56) of young men. Acute post-exercise serum growth hormone (GH), free testosterone (fT), insulin-like growth factor (IGF-1) and cortisol responses were determined following an acute intense leg resistance exercise routine at the midpoint of a 12-week resistance exercise training study. Acute hormonal responses were correlated with gains in lean body mass (LBM), muscle fibre cross-sectional area (CSA) and leg press strength. There were no significant correlations between the exercise-induced elevations (area under the curve-AUC) of GH, fT and IGF-1 and gains in LBM or leg press strength. Significant correlations were found for cortisol, usually assumed to be a hormone indicative of catabolic drive, AUC with change in LBM (r = 0.29, P < 0.05) and type II fibre CSA (r = 0.35, P < 0.01) as well as GH AUC and gain in fibre area (type I: r = 0.36, P = 0.006; type II: r = 0.28, P = 0.04, but not lean mass). No correlations with strength were observed. We report that the acute exercise-induced systemic hormonal responses of cortisol and GH are weakly correlated with resistance training-induced changes in fibre CSA and LBM (cortisol only), but not with changes in strength.
Re: For those that buy into the one-hour rule
Quote:
Originally Posted by
Rodja
Time in and of itself doesn't tell us anything regarding the actual training, the length of each phase, the volume/intensity, nutrition, etc. There are many variables that play into this and time spent in the gym is only one of them and is actually not the most important aspect as overall conditioning of the person plays a role in the time and rest needed to complete a given bout of exercise.
Echos my sentiments above. I've seen guys spend 3 hours in the gym and get very little work done. Conversely, when I'm pressed for time, I'll squeeze a 90 minute workout into 45 minutes and I can tell a big difference in the amount of intensity (assuming intensity is defined as equal work in less time or more work in equal time).