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Degree

Master of Science

Program

Kinesiology

Supervisor

Belfry, Glen R.

Abstract

This study investigated the effects of performing 30 second weight training bouts (30 s) on peak aerobic power, 2000 m time and peak and mean 1 min power output, compared to those of a low repetition strength training program (LoRep), in pre-conditioned well-trained male and female collegiate rowers while concurrently performing a high volume of endurance training over an identical five week period. The 30 s group mean 2000 m time was significantly reduced pre-to-post training by 1.0% (±1.3) (30 s: pre = 6:45.3 (±35.3), post = 6:41.2 (±32.7), P ≤ 0.05) while LoRep group mean 2000 m time was reduced by 0.9% (±1.4) (LoRep: pre = 6:51.6 (±36.1), post = 6:47.7 (±34.5)), which was not significant (P ≥ 0.05). The 30 s group had a significant 2.9% (±4.1) increase in peak power (30 s: pre = 608 watts (W) (±155), post = 624 W (±150), P ≤ 0.05) whereas the 0.7% (±4.7) increase in the LoRep was not significant (LoRep: pre = 639 W (±143), post = 642 W (±138), P ≥ 0.05). However, both the 30 s and LoRep groups improved mean 1 min power by 4.0% (±3.5) and 4.2% (±3.6) respectively, (30 s: pre = 545 W (±139), post = 564 W (±133), P ≤ 0.05; LoRep: pre = 552 W (±128), post = 575 W (±132), P ≤ 0.05 ). No change in cycling peak aerobic power was found in either group (30 s: pre = 414 W (±90), post = 421 W (±88), P ≥ 0.05; LoRep: pre = 416 W (±90), post = 415 W (±78), P ≥ 0.05). The 30 s group was found to have reduced post-ramp blood lactate post-training (pre-training; post-ramp = 13.7 mmol·L-1 (±2.3); post-training; post-ramp = 12.0 mmol·L-1 (±2.0), P ≤ 0.05). These findings demonstrate that five weeks of 30 s weight training bouts improved rowing ergometer performance whereas low-repetition strength training did not when performed concurrently with a high volume of endurance training in well-trained collegiate rowers.

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