Hawkins, SB, Doyle, TLA, and McGuigan, MR. The effect of different training programs on eccentric energy utilization in college-aged males. J Strength Cond Res 23(7): 1996-2002, 2009-The Eccentric Utilization Ratio (EUR), which is the ratio of countermovement jump (CMJ) to squat jump (SJ) performance measures, is a useful indicator of training status in elite athletes and their utilization of the stretch-shortening cycle. This investigation sought to determine if EUR was sensitive to different types of resistance training in untrained college-aged males. Twenty-nine college-aged males completed 8 weeks of training and were randomly allocated to 1 of 3 training programs: weight training (n = 10), plyometrics (n = 10), or weightlifting (n = 9). Testing occurred 3 times (pre, mid, post) with a CMJ and SJ conducted on a force plate integrated with a position transducer. Height, weight, and a 1RM (repetition maximum) squat also were measured. Weightlifting significantly (p < 0.05) helped subjects jump higher and produce more power than plyometrics for height and power for both CMJ and SJ results. This investigation indicated EUR did not significantly change, suggesting that this type of performance indicator may not be useful in a recreationally active population. Alternatively, an 8-week training program might not be a long enough time period to see changes in this group of participants. Results did indicate that high-velocity and high-force training programs, consisting of weightlifting and plyometrics, improved lower-body performance, especially in the areas of jump height and power.
1School of Health Sciences, University of Notre Dame Australia, Fremantle, Western Australia, Australia; 2School of Sport Science, Exercise, and Health, University of Western Australia, Crawley, Western Australia, Australia; and 3NZ Academy of Sport North Island, Millennium Institute of Sport & Health, Antares Place, Mairangi Bay 0632 Glen Innes, Auckland 1743, New Zealand
Address correspondence to Dr. Tim Doyle, email@example.com.