Originally Posted by
Jimidasprinkla
I did a multivariate analysis of the results from the 2017 US Strengthlifting Federation Fall Classic to provide some empirical basis for this discussion, namely our assumption that gaining weight helps to gain strength. No shocker. The results confirm what was already known through common sense. The heavier your are, the stronger you will be in general.
When you control for age and sex, every 1 kg of additional body weight translates to an extra 2.3 kg in the total. This holds up for the individual lifts as well: 1.1 kg on the squat, 0.4 kg on the press, and 0.7 kg on the deadlift for every 1 kg of additional body weight. Never mind that this doesn't add up to 2.3, as it's just rounding error across the models.
Note that this analysis only shows correlation, not causation. We are also dealing with a sample group that self-selected into the Fall Classic. Nevertheless, the multiple linear regression model is very strong for those of you familiar with P values, F statistics, and multiple R.
I'm happy to share the spreadsheet if anyone is interested in the analysis. If you think statistics is bullshit, just ignore the post.
This is demonstrably true based on the multivariate analysis above. Benchmarking against the other lifters, we would have expected Dr. Feigenbaum to have a total of 460 kg based on his age, sex, and weight. He actually turned in a total of 709 kg.