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

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 - 2014/11/15

Y1 - 2014/11/15

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 lead to performance improvements in moderately trained endurance runners. For an 8-wk intervention period (INT) 23 male runners [maximum oxygen uptake (VO2max) 59 ± 1 ml•min-1•kg-1; values are means ± SE] either maintained their training (CON, n = 11) or performed highintensity 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 wk 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 wk. Performance in a 1,500-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 wk of INT. In HICT, running economy (189 ± 4 vs. 195 ± 4 ml•kg-1•km-1), muscle content of NHE1 (35%) and dynamic muscle strength was augmented (P < 0.01) after compared with before INT, whereas VO2max, 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, lead 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 lead to performance improvements in moderately trained endurance runners. For an 8-wk intervention period (INT) 23 male runners [maximum oxygen uptake (VO2max) 59 ± 1 ml•min-1•kg-1; values are means ± SE] either maintained their training (CON, n = 11) or performed highintensity 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 wk 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 wk. Performance in a 1,500-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 wk of INT. In HICT, running economy (189 ± 4 vs. 195 ± 4 ml•kg-1•km-1), muscle content of NHE1 (35%) and dynamic muscle strength was augmented (P < 0.01) after compared with before INT, whereas VO2max, 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, lead 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

SN - 8750-7587

VL - 117

SP - 1097

EP - 1109

JO - Journal of Applied Physiology

JF - Journal of Applied Physiology

IS - 10

ER -