Effect of consecutive repeated sprint and resistance exercise bouts on acute adaptive responses in human skeletal muscle
Journal article
Coffey, Vernon Glenn, Jemiolo, Bozena, Edge, Johann, Garnham, Andrew P., Trappe, Scott W. and Hawley, John Alan. (2009). Effect of consecutive repeated sprint and resistance exercise bouts on acute adaptive responses in human skeletal muscle. American Journal of Physiology - Regulatory Integrative and Comparative Physiology. 297(5), pp. 1441 - 1451. https://doi.org/10.1152/ajpregu.00351.2009
Authors | Coffey, Vernon Glenn, Jemiolo, Bozena, Edge, Johann, Garnham, Andrew P., Trappe, Scott W. and Hawley, John Alan |
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Abstract | We examined acute molecular responses in skeletal muscle to repeated sprint and resistance exercise bouts. Six men [age, 24.7 ± 6.3 yr; body mass, 81.6 ± 7.3 kg; peak oxygen uptake, 47 ± 9.9 ml·kg−1·min−1; one repetition maximum (1-RM) leg extension 92.2 ± 12.5 kg; means ± SD] were randomly assigned to trials consisting of either resistance exercise (8 × 5 leg extension, 80% 1-RM) followed by repeated sprints (10 × 6 s, 0.75 N·m torque·kg−1) or vice-versa. Muscle biopsies from vastus lateralis were obtained at rest, 15 min after each exercise bout, and following 3-h recovery to determine early signaling and mRNA responses. There was divergent exercise order-dependent phosphorylation of p70 S6K (S6K). Specifically, initial resistance exercise increased S6K phosphorylation (∼75% P < 0.05), but there was no effect when resistance exercise was undertaken after sprints. Exercise decreased IGF-I mRNA following 3-h recovery (∼50%, P = 0.06) independent of order, while muscle RING finger mRNA was elevated with a moderate exercise order effect (P < 0.01). When resistance exercise was followed by repeated sprints PGC-1α mRNA was increased (REX1-SPR2; P = 0.02) with a modest distinction between exercise orders. Repeated sprints may promote acute interference on resistance exercise responses by attenuating translation initiation signaling and exacerbating ubiquitin ligase expression. Indeed, repeated sprints appear to generate the overriding acute exercise-induced response when undertaking concurrent repeated sprint and resistance exercise. Accordingly, we suggest that sprint-activities are isolated from resistance training and that adequate recovery time is considered within periodized training plans that incorporate these divergent exercise modes. |
Keywords | repeated sprint ability; resistance training; adaptation |
Year | 2009 |
Journal | American Journal of Physiology - Regulatory Integrative and Comparative Physiology |
Journal citation | 297 (5), pp. 1441 - 1451 |
Publisher | The American Physiological Society |
ISSN | 0363-6119 |
Digital Object Identifier (DOI) | https://doi.org/10.1152/ajpregu.00351.2009 |
Page range | 1441 - 1451 |
Research Group | Sports Performance, Recovery, Injury and New Technologies (SPRINT) Research Centre |
Place of publication | United States of America |
https://acuresearchbank.acu.edu.au/item/8qzv8/effect-of-consecutive-repeated-sprint-and-resistance-exercise-bouts-on-acute-adaptive-responses-in-human-skeletal-muscle
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