CoachFergie said:
Sunde found no improvements in any measures relevant to cycling performance.
Ronnestad's four papers on the same piece of research are confounded by the fact that the experimental group did more work than the control group that actually went backgrounds in terms of performance. Not really comparing apples with apples. The gains the experimental group made were marginal compared to the gains seen from studies that measure performance improvement from various interval training protocols.
Aagaard was just a review paper and his own bias for strength training is very apparent. I think both him and Ronnestad collaborated on a study involving runners where the strength trained experimental group showed no improvement over a control group.
It appears the review journal Sports Medicine is jumping on the strength and conditioning band wagon and has published some very woeful reviews on the subject drawing some conclusions that do not match the actual data or resorting to physiological gains when performance gains are not found. While physiological gains are interesting and if significant warrant publishing if they find no performance gains then they should only provide the motivation for further research.
What you refer to as a confound isn't a confound since its explicitly the independent variable being manipulated (it's the same design as the paper report a null result you cite approvingly). There's nothing wrong with a E vs. E+S manipulation. You say the gain may be due to the increased workload - but that is exactly the hypothesis being tested. It is a separate issue whether another manipulation such as E + interval protocol results in similar gains.
As a scientist, I find the amount of dogma in exercise science deeply perplexing. Given the paucity of controlled experiments, the complexity of the systems involved, the largely unacknowledged role of genetic variance (Ahmetov et al., The combined impact of metabolic gene polymorphisms on elite endurance athlete status and related phenotypes), etc., and the largely unexplored 'space' of training regimes, it's puzzling why anyone would think there is enough understanding to dismiss any training mode.
The Aagaard paper you mention and a more recent one from his group are also not review papers. The gains are not marginal. They report an 8% mean power production increase in 45 minute TT performance over E alone alongside findings on muscle morphology and fiber-type composition, capillarization, maximal muscle strength and contractile rate of force development. They offer a plausible mechanism underlying the improved performance. The null result paper you cite is also plausibly explained by the short duration of that program in relatively untrained subjects vs. a longer training program in trained subjects.
Further, what does anyone know about the signaling pathways (beyond HSPs) that may be modulated by strength training involving alterations (such as HGH, testosterone, inflammatory response, AMPK). Seems like largely unexplored and premature to simply rule out an entire training modality.