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Strength training improves running economy durability and fatigued high-intensity performance in well-trained male runners: A randomized control trial

Introduction: Strength training improves running economy (RE) in a non-fatigued state and performance after prolonged exercise at moderate intensity. However, it is unknown if strength training improves RE durability at marathon race intensity, or high-intensity performance akin to the final stages of a competitive race. This study quantified the effect of a supplementary 10-week strength training program on RE throughout 90 min of running in the heavy-intensity domain, and subsequent fatigued performance in runners.

Methods: Twenty-eight well-trained male runners (maximal oxygen uptake (V̇O2max) 58.6 ml·kg-1 ·min-1 ; 10 km 39:02 mm:ss) were performance matched and randomly assigned to a habitual running-only control (E; n=14) or supplementary strength training group (E+S; n=14) that performed maximal strength and plyometric training twice weekly for 10 weeks. Before the training, participants performed a 90 min run at 10% Δ between lactate threshold 1 and 2 (13.1±1.4 km/h, 79.7% V̇O2max). RE, quantified as oxygen cost (ml·kg-1 ·km-1 ), was recorded at 15 min intervals during the run, immediately thereafter, participants ran a time to exhaustion (TTE) at 95% pre-test V̇O2max (16.1±1.6 km/h). The 90 min run and TTE were repeated after the training intervention.

Results: A large interaction effect of training x group x run time was found for RE (p=0.003, ηp 2=0.13), with E+S improving vs E at 90 min (-2.1% vs +0.6; p=0.04). For TTE, a large group x training interaction effect was detected (p=0.004, ηp 2=0.28), changing by +35% in E+S and -8% in E.

Conclusions: This study demonstrated that adding strength and plyometrics training to a programme of endurance running improved RE durability and substantially increased high-intensity TTE at the end of a 90 min run in the heavy intensity domain in well-trained male runners.

Funding

National Strength Conditioning Association via the “Young Investigator Research Grant

History

School

  • Sport, Exercise and Health Sciences

Published in

Medicine & Science in Sports & Exercise

Publisher

Lippincott, Williams & Wilkins / American College of Sports Medicine (ACSM)

Version

  • AM (Accepted Manuscript)

Rights holder

© American College of Sports Medecine

Publisher statement

This is a pre-copyedited, author-produced version of an article accepted for publication in Medicine & Science in Sports & Exercise. The published version of record: Zanini, Michele1; Folland, Jonathan P.1,2; Wu, Han1; Blagrove, Richard C.1. Strength Training Improves Running Economy Durability and Fatigued High-Intensity Performance in Well-Trained Male Runners: A Randomized Control Trial. Medicine & Science in Sports & Exercise ():10.1249/MSS.0000000000003685, February 28, 2025. Is available online at: https://journals.lww.com/acsmmsse/abstract/9900/strength_training_improves_running_economy.743.aspx and DOI: 10.1249/MSS.0000000000003685 .

Acceptance date

2025-02-28

Copyright date

2025

ISSN

0195-9131

eISSN

1530-0315

Language

  • en

Depositor

Dr Richard Blagrove. Deposit date: 14 April 2025

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