Chronic neuromuscular adaptations to single session vs. separate day combined strength and endurance training in previously untrained men
Year: 2014
Type: dissertation
Study design: Clinical Trial
Abstract: Bankers, Scott (2014).Chronic neuromuscular adaptations to single session vs. separate day combined strength and endurance training in previously untrained men.Department of Biology of Physical Activity, University of Jyväskylä.Master's Thesis in Science of Sport Coaching and Fitness Testing.70 pp.Combined strength (S) and endurance (E) training has drawn increasingly more interest due to its use for practical purposes (e.g.time management) and the necessity of both S and E in certain athletic events (e.g.soccer).However, there is very little literature on the differences among combined training protocols, specifically single-session, S before E (S+E), and separate day (SD) combined training and the potential differences in long-term neuromuscular adaptations.Hence, the aim of this study was to examine the possible differences in chronic neuromuscular adaptations to performing S+E compared to SD. 39 previously untrained young adult males completed 24-weeks of progressively periodized combined strength and endurance training.Subjects were from two different periods of training and were assigned to either a single-session, S before E (S+E; n=18), or a separate day (SD; n=21) combined training protocol.All subjects were tested three times (0, 12 and 24 weeks), with the SD group also having a fourth measurement (-12 weeks).The 24 weeks of combined training resulted in significant increases in maximal strength.Specifically, maximal bilateral concentric 1RM leg press increased 13% (p<0.001) and 17% (p<0.001),maximal bilateral isometric leg press force increased 11% (p<0.001) and 13% (p<0.01),maximal unilateral isometric knee extension force increased 6% (p<0.05) and 14% (p<0.01), and maximal unilateral isometric knee flexion force increased 15% (p<0.001) and 14% (p<0.01) in the SD and S+E training groups, respectively.Additionally, significant increases in: voluntary activation (VA) of 4.2% (p<0.001) and 3.6% (p≤0.01),vastus lateralis (VL) maximal iEMG (during max.bilateral isometric leg press) of 26% (p<0.001) and 42% (p<0.001),maximal VL rms EMG (during max.unilateral isometric knee extension) of 22% (p<0.05) and 26% (p<0.01),maximal BF iEMG (during max.unilateral isometric knee flexion) of 36% (p<0.01) and 34% (p<0.05), and M-wave maximum of 22% (p<0.05) and 17% (non-significant; p=0.051) occurred in the SD and S+E training groups, respectively.Lastly, maximal oxygen consumption (VO 2 max) significantly increased 17% (p<0.001) and 6% (p<0.01) in the SD and S+E training groups, respectively, while no significant differences were found between SD and S+E in any of the variables.The findings support the notion that both training protocols induce significant increases in neuromuscular adaptations to a similar (non-significant difference) degree.Hence, both protocols can be performed to equal effect regarding S and E gains, and S+E can be used to exercise in a more time-efficient manner. Keywords: combined training,
Author: Scott Bankers
Language: English
Subfield: Orthopedics and Sports Medicine
Field: Medicine
Domain: Health Sciences
Open Access status: green
Funder: Jyväskylän Yliopisto
OpenAlex ID: W2341809819