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This study examined the effects of manipulating volume and intensity on strength and power in experienced male athletes. Subjects (N = 22) were tested for maximum strength in the squat and bench press lifts, vertical jump (VJ), lean body mass (LBM), and neural activation levels (IEMG). They trained 3 days a week for 12 weeks according to a linear periodization model (n = 8), an undulating periodization model (n = 5), or a nonperiodized control model (n = 9). Training volume and relative intensity were equated for all groups. Maximal squat, bench press, and LBM all improved significantly in each group, and changes in maximal strength correlated significantly with changes in LBM. IEMG levels were generally unchanged and did not correlate with changes in strength. The VJ increased significantly through training, but there were no differences between groups. Changes in VJ were not significantly correlated with changes in squat, LBM, or IEMG levels. The results indicate that in short-term training using previously trained subjects, no differences in maximal strength are seen when training volume and relative intensity are equated.
Baker et al. (Sat,) studied this question.