TY - JOUR

T1 - Concurrent speed endurance and resistance training improves performance, running economy and muscle NHE1 in moderately trained runners

AU - Skovgaard, Casper

AU - Christensen, Peter Møller

AU - Larsen, Sonni

AU - Rostgaard Andersen, Thomas

AU - Thomassen, Martin

AU - Bangsbo, Jens

N1 - CURIS 2014 NEXS 261

PY - 2014

Y1 - 2014

N2 - The purpose of this study was to examine whether speed endurance training (SET, repeated 30-s sprints) and heavy resistance training (HRT, 80-90% of 1 repetition maximum) performed in succession are compatible and leads to performance improvements in moderately trained endurance runners. For an 8-week intervention period (INT) 21 male runners (maximum oxygen uptake (VO2-max): 59±1 mL/min/kg; mean ± SE) either maintained their training (CON, n=11) or performed high intensity concurrent training (HICT, n=12) consisting of two weekly sessions of SET followed by HRT and two weekly sessions of aerobic training with an average reduction in running distance of 42%. After 4-weeks of HICT, performance was improved (P<0.05) in a 10-km run (42:30±1:07 vs. 44:11±1:08 min:s) with no further improvement during the last 4 weeks. Performance in a 1500-m run (5:10±0:05 vs. 5:27±0:08 min:s) and in the Yo-Yo IR2 test (706±97 vs. 491±65 m) improved (P<0.001) only following 8 weeks of INT. In HICT, running economy (189±4 vs. 195±4 ml/kg/km), muscle content of NHE1 (35%) and dynamic muscle strength was augmented (P<0.01) after compared to before INT, whereas VO2-max, muscle morphology, capillarization, content of muscle Na(+)/K(+) pump subunits and MCT4 were unaltered. No changes were observed in CON. The present study demonstrates that SET and HRT, when performed in succession, leads to improvements in both short- and long-term running performance together with improved running economy as well as increased dynamic muscle strength and capacity for muscular H(+) transport in moderately trained endurance runners.

AB - The purpose of this study was to examine whether speed endurance training (SET, repeated 30-s sprints) and heavy resistance training (HRT, 80-90% of 1 repetition maximum) performed in succession are compatible and leads to performance improvements in moderately trained endurance runners. For an 8-week intervention period (INT) 21 male runners (maximum oxygen uptake (VO2-max): 59±1 mL/min/kg; mean ± SE) either maintained their training (CON, n=11) or performed high intensity concurrent training (HICT, n=12) consisting of two weekly sessions of SET followed by HRT and two weekly sessions of aerobic training with an average reduction in running distance of 42%. After 4-weeks of HICT, performance was improved (P<0.05) in a 10-km run (42:30±1:07 vs. 44:11±1:08 min:s) with no further improvement during the last 4 weeks. Performance in a 1500-m run (5:10±0:05 vs. 5:27±0:08 min:s) and in the Yo-Yo IR2 test (706±97 vs. 491±65 m) improved (P<0.001) only following 8 weeks of INT. In HICT, running economy (189±4 vs. 195±4 ml/kg/km), muscle content of NHE1 (35%) and dynamic muscle strength was augmented (P<0.01) after compared to before INT, whereas VO2-max, muscle morphology, capillarization, content of muscle Na(+)/K(+) pump subunits and MCT4 were unaltered. No changes were observed in CON. The present study demonstrates that SET and HRT, when performed in succession, leads to improvements in both short- and long-term running performance together with improved running economy as well as increased dynamic muscle strength and capacity for muscular H(+) transport in moderately trained endurance runners.

U2 - 10.1152/japplphysiol.01226.2013

DO - 10.1152/japplphysiol.01226.2013

M3 - Journal article

C2 - 25190744

VL - 117

SP - 1097

EP - 1109

JO - Journal of Applied Physiology

JF - Journal of Applied Physiology

SN - 8750-7587

IS - 10

ER -