Comparison between high- and low-intensity eccentric cycling of equal mechanical work for muscle damage and the repeated bout effect

G. Mavropalias; T. Koeda; O.R. Barley; W.C.K. Poon; A.J. Fisher; A.J. Blazevich; K. Nosaka

doi:10.1007/s00421-020-04341-5

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Comparison between high- and low-intensity eccentric cycling of equal mechanical work for muscle damage and the repeated bout effect

Journal article

Peer reviewed

Comparison between high- and low-intensity eccentric cycling of equal mechanical work for muscle damage and the repeated bout effect

G. Mavropalias, T. Koeda, O.R. Barley, W.C.K. Poon, A.J. Fisher, A.J. Blazevich and K. Nosaka

European Journal of Applied Physiology, Vol.120(5), pp.1015-1025

2020

DOI: https://doi.org/10.1007/s00421-020-04341-5

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Abstract

Purpose We compared high- and low-intensity eccentric cycling (ECC) with the same mechanical work for changes in muscle function and muscle soreness, and examined the changes after subsequent high-intensity ECC. Methods Twenty men performed either high-intensity ECC (1 min × 5 at 20% of peak power output: PPO) for two bouts separated by 2 weeks (H–H, n = 11), or low-intensity (4 min × 5 at 5% PPO) for the first and high-intensity ECC for the second bout (L–H, n = 9). Changes in indirect muscle damage markers were compared between groups and bouts. Results At 24 h after the first bout, both groups showed similar decreases in maximal isometric (70° knee angle, − 10.6 ± 11.8%) and isokinetic ( − 11.0 ± 8.2%) contraction torque of the knee extensors (KE), squat ( − 7.7 ± 10.4%) and counter-movement jump ( − 5.9 ± 8.4%) heights (p < 0.05). Changes in KE torque and jump height were smaller after the second than the first bout for both the groups (p < 0.05). Increases in plasma creatine kinase activity were small, and no significant changes in vastus lateralis or intermedius thickness nor ultrasound echo-intensity were observed. KE soreness with palpation was greater (p < 0.01) in H–H (peak: 4.2 ± 1.0) than L–H (1.4 ± 0.6) after the first bout, but greater in L–H (3.6 ± 0.9) than H–H (1.5 ± 0.5) after the second bout. This was also found for muscle soreness with squat, KE stretch and gluteal palpation. Conclusion The high- and low-intensity ECC with matched mechanical work induced similar decreases in muscle function, but DOMS was greater after high-intensity ECC, which may be due to greater extracellular matrix damage and inflammation.

Details

Title: Comparison between high- and low-intensity eccentric cycling of equal mechanical work for muscle damage and the repeated bout effect
Authors/Creators: G. Mavropalias (Author/Creator) - Edith Cowan University
T. Koeda (Author/Creator) - Nagoya Gakuin University
O.R. Barley (Author/Creator) - Edith Cowan University
W.C.K. Poon (Author/Creator) - Edith Cowan University
A.J. Fisher (Author/Creator) - Edith Cowan University
A.J. Blazevich (Author/Creator) - Edith Cowan University
K. Nosaka (Author/Creator) - Edith Cowan University
Publication Details: European Journal of Applied Physiology, Vol.120(5), pp.1015-1025
Publisher: Springer Verlag
Identifiers: 991005542301207891
Murdoch Affiliation: Murdoch University
Language: English
Resource Type: Journal article

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Collaboration types: International collaboration
Citation topics: 1 Clinical & Life Sciences; 1.172 Sports Science; 1.172.1542 Exercise Immunology
Web Of Science research areas: Physiology; Sport Sciences
ESI research areas: Clinical Medicine