A study done at Marquette University and published in the Journal of Strength and Conditioning Research in February 2010 attempted to configure how well a six rep maximum in the barbell squat acted as a predictor of load to be used in four common hamstring exercises in both male and female collegiate athletes.
The results indicated that for males the 6RM in the squat did prove to provide meaningful prediction equations to be used to estimate loading in the seated leg curl, stiff leg dead lift, single leg dead lift, and good morning exercise. The following equations were developed for male trainees using linear regression analysis:
Seated leg curl = squat load (0.186) + 10.935 kg
Stiff leg deadlift load = squat load (1.133) – 86.331 kg
Single leg stiff leg deadlift load = squat load (0.443) – 3.425 kg
Good morning load = squat load (0.961) – 105.505 kg
*1kg = 2.2lbs
Interestingly, the squat did not provide a means to predict load in ANY of the four hamstring exercise for female trainees! This indicates that in the case of the squat, it is far better at predicting intensity to be used in these four exercise (and maybe others) for trained men than trained women. Goes to show you the massive differences in training the female and male client. Women are equal but certainly not the same!
Resources:
J Strength Cond Res. 2010 Feb;24(2):293-9.
http://www.ncbi.nlm.nih.gov/pubmed/20072071
