[Supertraining] Re: Single vs multiple set

The study was hetergenous on purpose, but either way you look at it, both studies clearly showed that multiple sets is better than one, in real world application.

Phillip Garrison, CSCS*D
Mesa, AZ
Mesa Community College

To: Supertraining@yahoogroups.comFrom: Yngvai@comcast.netDate: Thu, 10 Jan 2008 22:05:07 +0000Subject: [Supertraining] Re: Single vs multiple set

--- In Supertraining@yahoogroups.com, Keith Hobman <kshobman@...> wrote:>> All studies have limitations. Rhea et al can still be a a good paper, right?> > Hopefully we can build on a body of research. If you are building on > Rhea et al., then I would say it is a _good_ study.> Rhea has 2 meta analyses out there, and IMO neither one of them are very good papers. And unfortunately the flaws in these papers have given the HIT camp a lot of ammo to work with.In their first one (published in Res Quarterly), they included studies that did not meet their reported inclusion criteria. They also included 93 multiple, non-independent effect sizes (ESs) in their analysis. This can produce bias in the outcome if you do not use an appropriate statistical model to account for this. My analysis uses a statistical model that addresses this issue.In their second one (published in MSSE), they did not have strictly defined inclusion/exclusion criteria, and they included studies on ergogenic aids, diseased populations, and children. So, their study population was extremely heterogeneous, which doesn't allow for meaningful analysis of any type of dose-response effect of the number of sets. This is akin to doing an epidemiological study on the effects of total fat intake on heart disease, without taking into consideration confounding factors like energy intake, fat type, activity, etc. They did not do a statistical analysis of the ESs, and there was little control for group or study level variables that would affect the outcomes. Also, this paper suffers from the same issue of non-independent ESs like their previous paper. I address all of these issues in my paper.James Krieger, M.S., M.S.Research Associate20/20 Lifestyleshttp://www.2020lifestyles.comBellevue, WAEditor, Journal of Pure Powerhttp://www.jopp.us