Scheduling of eccentric lower limb injury prevention exercises during the soccer micro-cycle: Which day of the week?

Scand J Med Sci Sports. 2018 Oct;28(10):2216-2225. doi: 10.1111/sms.13226. Epub 2018 Jun 19.

Abstract

Scheduling eccentric-based injury prevention programs (IPP) during the common 6-day micro-cycle in soccer is challenged by recovery and tapering phases. This study profiled muscle damage, neuromuscular performance, and perceptual responses to a lower limb eccentric-based IPP administered 1 (MD+1) vs 3 days (MD+3) postmatch. A total of 18 semi-professional players were monitored daily during 3 in-season 6-day micro-cycles, including weekly competitive fixtures. Capillary creatine kinase concentration (CK), posterior lower limb isometric peak force (PF), counter-movement jump (CMJ) performance, and muscle soreness were assessed 24 hours prior to match-day (baseline), and every 24 hours up to 120 hours postmatch. The IPP consisted of lunges, single stiff leg dead-lifts, single leg-squats, and Nordic hamstring exercises. Performing the IPP on MD+1 attenuated the decline in CK normally observed following match play (CON: 142%; MD+3: 166%; small differences). When IPP was delivered on MD+3, CK was higher vs CON and MD+1 trials on both MD+4 (MD+3: 260%; CON: 146%; MD+1: 151%; moderate differences) and MD+5 (MD+3: 209%; CON: 125%; MD+1: 127%; small differences). Soreness ratings were not exacerbated when the IPP was delivered on MD+1, but when prescribed on MD+3, hamstring soreness ratings remained higher on MD+4 and MD+5 (small differences). No between-trial differences were observed for PF and CMJ. Administering the IPP in the middle of the micro-cycle (MD+3) increased measures of muscle damage and soreness, which remained elevated on the day prior to the next match (MD+5). Accordingly, IPP should be scheduled early in the micro-cycle, to avoid compromising preparation for the following match.

Keywords: injury prevention; muscle; scheduling; soccer.

Publication types

  • Randomized Controlled Trial

MeSH terms

  • Adult
  • Athletic Injuries / prevention & control*
  • Creatine Kinase / blood
  • Cross-Over Studies
  • Exercise Therapy*
  • Humans
  • Lower Extremity / injuries*
  • Lower Extremity / physiology
  • Muscle Strength
  • Muscle, Skeletal / injuries
  • Muscle, Skeletal / physiology
  • Myalgia
  • Soccer / injuries*
  • Time Factors*
  • Young Adult

Substances

  • Creatine Kinase