Recovery Kinetics Following Change of Direction Training

NCT04795232 | Completed

• 1 other identifier: Recovery-COD Training-UTH
• Study Type: interventional
• Target: 10
• Locations: 1 country
• Sites: 2

Brief Summary

This study aims at investigating the recovery kinetics of skeletal muscle damage, neuromuscular fatigue and performance following a single change of direction (COD) training session in competitive soccer players. The impact of COD degrees will be also examined by comparing a 45o vs. 90o COD training session. Ten male soccer players will perform a COD45 \[A single training session including 2x(10x \~27.6m) sprints with two 45o COD in each sprint\], a COD90 \[A single training session including 2x(10x \~21.2m) sprints with two 90o COD in each sprint\] and a Control trial (No intervention included, only daily measurements) in randomized, repeated measures, crossover design. Assessments related to skeletal muscle damage, neuromuscular fatigue and performance will be performed prior to training session and daily for three consecutive days post-training, in each trial.

Conditions

Skeletal Muscle Damage

Keywords

change of direction training; recovery; soccer; performance

Outcome Measures

Primary Outcomes (22)

• Change in creatine kinase activity

  Creatine kinase activity will be measured in plasma

  At baseline, at 24, 48 and 72 hours after change of direction training session

• Change in white blood cell count

  White blood cell count will be measured by using an automatic blood analyzer

  At baseline, at 24, 48 and 72 hours after change of direction training session

• Change in delayed onset of muscle soreness

  Muscle soreness will be assessed by palpation of the muscle belly and the distal region

  At baseline, at 1, 2, 3, 24, 48 and 72 hours after change of direction training session

• Change in isometric peak torque

  Isometric peak torque will be assessed on an isokinetic dynamometer

  At baseline, at 1, 2, 3, 24, 48 and 72 hours after change of direction training session

• Change in fatigue index of maximal voluntary isometric contraction during 10 seconds

  Fatigue rate will be determined by calculating the percent drop of peak torque between the first and the last three seconds of a 10-second maximal isometric contraction

  At baseline, at 1, 2, 3, 24, 48 and 72 hours after change of direction training session

• Change in isokinetic peak torque of knee extensors

  Isokinetic peak torque will be assessed on an isokinetic dynamometer in both limbs

  At baseline, at 24, 48 and 72 hours after change of direction training session

• Change in isokinetic peak torque of knee flexors

  Isokinetic peak torque will be assessed on an isokinetic dynamometer in both limbs

  At baseline, at 24, 48 and 72 hours after change of direction training session

• Change in countermovement jump height

  Countermovement jump height will be assessed by using two force platforms at 1000 Hz, with each foot in parallel on the two platforms providing a separate yet time-synchronized measurement of the jump height for each leg

  At baseline, at 1, 2, 3, 24, 48 and 72 hours after change of direction training session

• Change in ground reaction force during countermovement jump

  Ground reaction force will be assessed by using two force platforms at 1000 Hz, with each foot in parallel on the two platforms providing a separate yet time-synchronized measurement of the jump height for each leg

  At baseline, at 1, 2, 3, 24, 48 and 72 hours after change of direction training session

• Change in peak power during countermovement jump

  Peak power will be assessed using two force platforms at 1000 Hz, with each foot in parallel on the two platforms providing a separate yet time-synchronized measurement of the jump height for each leg

  At baseline, at 1, 2, 3, 24, 48 and 72 hours after change of direction training session

• Change in mean power during countermovement jump

  Mean power will be assessed using two force platforms at 1000 Hz, with each foot in parallel on the two platforms providing a separate yet time-synchronized measurement of the jump height for each leg

  At baseline, at 1, 2, 3, 24, 48 and 72 hours after change of direction training session

• Change in vertical stiffness during countermovement jump

  Vertical stiffness will be assessed using two force platforms at 1000 Hz, with each foot in parallel on the two platforms providing a separate yet time-synchronized measurement of the jump height for each leg

  At baseline, at 1, 2, 3, 24, 48 and 72 hours after change of direction training session

• Change in peak rate of force development during countermovement jump

  Peak rate of force development will be assessed using two force platforms at 1000 Hz, with each foot in parallel on the two platforms providing a separate yet time-synchronized measurement of the jump height for each leg

  At baseline, at 1, 2, 3, 24, 48 and 72 hours after change of direction training session

• Change in peak normalized electromyography (EMG) during the eccentric and concentric phases of the countermovement jump

  EMG data will be collected wirelessly at 2000 Hz using a Myon MA-320 EMG system (Myon AG, Switzerland) for the vastus lateralis, biceps femoris, gastrocnemius and gluteus maximus muscles.

  At baseline, at 1, 2, 3, 24, 48 and 72 hours after change of direction training session

• Change in mean normalized electromyography (EMG) during the eccentric and concentric phases of the countermovement jump

  EMG data will be collected wirelessly at 2000 Hz using a Myon MA-320 EMG system (Myon AG, Switzerland) for the vastus lateralis, biceps femoris, gastrocnemius and gluteus maximus muscles.

  At baseline, at 1, 2, 3, 24, 48 and 72 hours after change of direction training session

• Change in repeated sprint ability

  Repeated sprint ability will be tested using 5x30 m sprints with 25 seconds rest in-between

  At baseline, at 24, 48 and 72 hours after change of direction training session

• Change in sprint time of 10m

  10m sprint time will be assessed using light cells

  At baseline, at 24, 48 and 72 hours after change of direction training session

• Change in sprint time of 30m

  30m sprint time will be assessed using light cells

  At baseline, at 24, 48 and 72 hours after change of direction training session

• Change in agility

  Agility will be assessed using the illinois agility test.

  At baseline, at 24, 48 and 72 hours after change of direction training session

• Change in field activity during the change of direction training session

  Field activity will be continuously monitored during the change of direction training session by using global positioning system (GPS)

  During the change of direction training session

• Change in heart rate during the change of direction training session

  Heart rate will be continuously monitored during the change of direction training session by using heart rate monitors.

  During the change of direction training session

• Change in blood lactate concentration

  Blood lactate will be measured using a lactate plus system

  At baseline and immediately post change of direction training session

Secondary Outcomes (8)

• Body mass

  At baseline

• Body height

  At baseline

• Body fat

  At baseline

• Lean body mass

  At baseline

• Maximal oxygen consumption (VO2max)

  At baseline

Study Arms (3)

Control

NO INTERVENTION

Participants in this arm will receive no intervention

COD45

EXPERIMENTAL

Participants in this arm will participate in a COD training session consisted of 45 degrees changes of direction

Other: COD45

COD90

EXPERIMENTAL

Participants in this arm will participate in a COD training session consisted of 90 degrees changes of direction

Other: COD90

Interventions

COD45 OTHER

Participants will perform 2 sets of 10 sprints. The total distance for each sprint will be 27.6 meters and will include two changes of direction of 45 degrees. The recovery time will be 16 seconds between sprints and 2.20 minutes between sets

COD45

COD90 OTHER

Participants will perform 2 sets of 10 sprints. The total distance for each sprint will be 21.2 meters and will include two changes of direction of 90 degrees. The recovery time will be 16 seconds between sprints and 2.20 minutes between sets

COD90

Eligibility Criteria

• Age: 18 Years - 35 Years
• Sex: male
• Healthy Volunteers: Yes
• Age Groups: Adult (18-64)

You may qualify if:

• Soccer players participating in at least 5 training sessions per week and 1official match
• Participation at a competitive level for at least 4 years
• Free of musculoskeletal injuries
• No use of ergogenic supplements or medication
• Non-smokers

You may not qualify if:

• Musculoskeletal injury
• Use of alcohol, caffeine and any type of ergogenic supplements or medication during the course of the study

Sponsors & Collaborators

• University of Thessaly: lead

Study Sites (2)

SMART LAB, Department of Physical Education and Sports Science, University of Thessaly.

Trikala, 42100, Greece

Location

SmArT LABORATORY, SCHOOL OF PHYSICAL EDUCATION & SPORTS SCIENCES, UNIVERSITY OF THESSALY

Trikala, 42100, Greece

Location

Study Officials

• Ioannis G Fatouros, Prof

  University of Thessaly, Department of Physical Education and Sport Science

  STUDY DIRECTOR

Study Design

• Study Type: interventional
• Phase: not applicable
• Allocation: RANDOMIZED
• Masking: NONE
• Purpose: OTHER
• Intervention Model: CROSSOVER
• Sponsor Type: OTHER
• Responsible Party: PRINCIPAL INVESTIGATOR
• PI Title: Professor

Study Record Dates

• First Submitted: March 9, 2021
• First Posted: March 12, 2021
• Study Start: April 1, 2021
• Primary Completion: September 30, 2021
• Study Completion: June 30, 2023
• Last Updated: October 10, 2023

Record last verified: 2023-10

Data Sharing

• IPD Sharing: Will not share

Locations

GR (2)