Rapid muscle activation changes across a competitive collegiate female soccer season

Kazuma Akehi, Eric C. Conchola, Ty B. Palmer, Brennan J. Thompson

Research output: Contribution to journalArticlepeer-review

Abstract

Objective: The purpose of this study was to examine the effects of a competitive soccer season on rapid activation properties of the knee extensors and flexors in Division II female soccer players. Methods: Eighteen collegiate female soccer players participated in the present study, however, due to injuries during the season a final sample of 16 players were included for study analysis. Participants performed two maximal voluntary isometric contractions (MVICs) of the knee extensors and flexors before, during, and at the end of a competitive college soccer season. Electromyography root mean square (EMG RMS; μV), rate of EMG rise (RER; %Peak EMG•s-1), and electromechanical delay (EMD; ms) were examined on both legs for the knee extensors and flexors. Results: EMG RMS at early time intervals (0-50, 0-100, and 50-100 ms) and RER at 0-75 ms for the knee extensors and flexors significantly increased from the pre-season to the end of the season (P≤0.010-0.026, η2=0.36-0.81). EMD of the knee flexors significantly decreased at the mid-season and the end of the season compared to the pre-season (P<0.001, η2=0.95). Conclusions: These findings may have important implications for monitoring improvements on thigh neuromuscular activation and developing lower extremity injury prevention strategies during a competitive collegiate female soccer season.

Original languageEnglish
Pages (from-to)206-214
Number of pages9
JournalJournal of Musculoskeletal Neuronal Interactions
Volume21
Issue number2
StatePublished - Jun 2021

Keywords

  • Female Athletes
  • Motor Control
  • Neuromuscular Adaptation

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