Strength training have been shown to be beneficial for endurance performance (1). Training for both endurance- and strength may cause greater improvements in endurance performance compared to endurance training alone (2). However, if appropriate periodization is not accounted for, strength training may also hinder optimal endurance development (3). Examining the acute effects of strength training on running performance may contribute to the body of knowledge on the interaction between the two training modes. Thus, the aim of this study was to examine effects of hypertrophic- (HSE) and neural strength exercise (NSE) on endurance performance 48 hours post exercise. Endurance trained men (n=6) and women (n=7) (33±9 years, 172±8 cm, 71±14 kg) volunteered to participate in the study. Prior to study, commencement measures were collected for maximal isometric leg-press, countermovement jump height (CMJ), running time-to-exhaustion during a maximal oxygen uptake (VO2max) test and running economy. These measures were repeated 48 hours following HSE and NSE, in cross-over counterbalanced design. The HSE consisted of four lower body exercises, 8-12 repetitions per set with 2 min recovery between sets and the NSE involved leg presses of 3 repetition maximum and 4 jumping exercises with 2-4 min recovery between sets. Time to exhaustion increased from base VO2max test to post NSE VO2max test (p = 0.044). CMJ was greater (p = 0.015) post NSE compared to post HSE. The NSE did not compromise running performance or muscle force 48 hours post exercise. The NSE appears to have a slight positive effect on running performance. Oxygen uptake and blood lactate levels at submaximal exercise intensities showed small trend that running economy was compromised post HSE. This study further confirms how strength exercises should be placed in endurance training programs to gain optimal training stimulus with 48 hours of recovery between exercise modes. Contact: Eero-Pekka Auvinen, Juha P. Ahtiainen: Neuromuscular Research Center, Biology of Physical Activity, Faculty of Sport and Health Sciences, University of Jyväskylä, Finland; Jussi Mikkola: KIHU-Research Institute for Olympic Sports, Jyväskylä, Finland; Kenji Doma: Sport & Exercise Science, College of Healthcare Sciences, James Cook University, Townsville, Australia
© Copyright 2020 19th International Symposium "Modern Science and Practice for Strength and Endurance Training" October 10-12, 2018. Published by Neuromuscular Research Center and Biology of Physical Activity, Faculty of Sport and Health Sciences, University of Jyväskylä. All rights reserved.