This is week 9 and I've finished the PR workouts, so here's a summary update. Nine weeks doesn't mark anything significant in the SF 5x5, but I think it's useful to see what kind of gains I've managed in the same amount of time that you'd spend on a dual factor cycle.
I posted my dual factor results a while back
here. I don't think it's valid to compare these as I wasn't eating enough on the DF, but they're there if you want to see them.
Code:
est | single factor (25 July - 24 Sept 2005)
5RM | 1 2 3 4 5 6 7 8 9 | gain
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squat | 90 | 83 88 90.5 93 50 60 80 85 90 | 0kg *
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bench | 57.5 | 55 60 61 62.5 63.5F 63.5 65 66 67.5 | 10kg (17%)
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dead | 115 | 110 115 120 122.5 125 127.5F 127.5 130 132.5 | 17.5kg (15%)
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miltry| 34 | 33 34 35.5 36.5 38 38.5 40 41 42.5 | 8.5kg (25%)
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row | 48 | 48 50.5 51.5 53 54 55.5 56 57.5 58.5 | 10.5kg (22%)
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bodywt| | 72 72 73 73 74 75 76 76.5 77 | 5kg
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* changed to freeweight squats
All weights in kg. All the above are for 5 reps.
To anyone out there who is interested in the effectiveness of the single factor 5x5 for someone who's been lifting for less than a couple of years, you only have to look at these results. The weights themselves still aren't that heavy. My bench is still only 148lb. But that's ok. The important thing is that it's going up, and I expect I'm close to the limit of how fast it can go up.
I've recommended this program to several people, including on another board. Some of them said it looked like overtraining, with squatting three times a week and benching twice a week. Some of them couldn't stand the thought of ditching their favourite isolation exercise. Pffft! This program rocks.
Note that I started week 1 just below my estimated 5 rep max, so you could argue I made the above gains in 8 weeks, not 9. If I added next week's results, the gains would be even higher.
Also note, and very significantly, that I haven't been doing heavy freeweight squats during these 9 weeks because I switched from smith machine squats to freeweights and had to go through a few weeks of conditioning. I'm sure lots of people will argue that had I been doing squats, the results might have been even better.
Final note is that I'm 33. Ok, not that old, but anyone in their late teens or early twenties should have growth left in them and will do even better than me. If they can lay off the booze and eat enough that is (I remember what I was like back then

).
...and I thought I was pushing myself on deadlifts - in percentage terms, that's my smallest gain at 'only' 15%!