High-intensity Interval Training Shock Microcycle Improves Running Performance but not Economy in Female Soccer Players

Filippo Dolci, Andrew E. Kilding, Tania Spiteri, Paola Chivers, Benjamin Piggott, Andrew Maiorana, Nicolas Hart

Research output: Contribution to journalArticlepeer-review

Abstract

This study aimed to evaluate the effect of high-intensity interval training shock microcycles (HIIT SM) on endurance, running economy and change of direction economy in female soccer players. Nineteen sub-elite female soccer players were randomised to two groups: HIIT SM(10 HIIT sessions over 13 days) or HIIT TRAD(4 HIIT sessions over 13 days) interventions. Endurance performance was evaluated through the 30-15 intermittent fitness test (30-15 IFT); running economy over a 5-min treadmill run; and change of direction economy over two conditions: (1) 5-min 20m shuttle run, and (2) 5-min 10m shuttle run. HIIT SMsignificantly improved 30-15 IFTscores compared to baseline (+4.4%, p=0.009; d =0.96) and 30-15 IFTscores relative to HIIT TRAD(p=0.002; d =2.01). There was no significant interaction (group×time) for running economy and change of direction economy. Pre- to post- intervention there was a significant main time effect for blood lactate over 20m and 10m shuttle runs (p<0.001 and p=0.037, respectively), with large (d =0.93) an d moderate (d =0.53) changes observed for the HIIT SMover the two distances, respectively. HIIT SMmay be more effective than HIIT TRADto improve 30-15 IFTover shorter training periods but may not affect running economy and change of direction economy.

Original languageEnglish
Pages (from-to)740-748
Number of pages9
JournalInternational Journal of Sports Medicine
Volume42
Issue number8
DOIs
Publication statusPublished - 1 Jun 2021
Externally publishedYes

Keywords

  • change of direction economy
  • endurance
  • football
  • HIIT
  • interval
  • running economy

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