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Flywheel Squats Versus Free Weight High Load Squats for Explosive Actions in Football

The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Read our disclaimer for details.
 
ClinicalTrials.gov Identifier: NCT04113031
Recruitment Status : Completed
First Posted : October 2, 2019
Last Update Posted : October 8, 2019
Sponsor:
Information provided by (Responsible Party):
University of Tromso

Brief Summary:
The objective of this randomized controlled trial is to compare the effect of flywheel resistance exercise versus free weight high load low velocity resistance exercise, where both modalities are carried out in a squat exercise with maximal intended mobilization of force contractions and combined with football practices, on 10 meter sprint, countermovement jump (CMJ) and one repeition maximum (1RM) partial 90° range of motion (ROM) squat strength in football players. The investigators 1) hypothesize that resistance exercise using flywheels and barbell free weights (BFW) combined with football practices will equally improve sprint time and jump height, and 2) the investigators hypothesize that squats carried out in a BFW exercise will result in superior improvements in 1RM partial squat compared with flywheel squats.

Condition or disease Intervention/treatment Phase
SOCCER Behavioral: Flywheel squats versus free weight high load squats for explosive actions in football Not Applicable

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Study Type : Interventional  (Clinical Trial)
Actual Enrollment : 49 participants
Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: None (Open Label)
Primary Purpose: Other
Official Title: Flywheel Squats Versus Free Weight High Load Squats for Explosive Actions in Football
Actual Study Start Date : January 15, 2019
Actual Primary Completion Date : March 15, 2019
Actual Study Completion Date : March 15, 2019

Resource links provided by the National Library of Medicine

MedlinePlus related topics: Body Weight

Arm Intervention/treatment
Experimental: Flywheel group
The players allocated to the flywheel group will perform six weeks of squat resistance exercise using a flywheel device.
Behavioral: Flywheel squats versus free weight high load squats for explosive actions in football
Over the course of the interventions, all players in all three groups will be instructed to adhere to their two-three weekly football practices and preseason matches of their team (~one weekly match). The flywheel group performes squat resistance exercise in using a flywheel device, and the barbell free weight group performes squat resistance exercise using an Olympic barbell and weights.

Experimental: Barbell free weight group
The players allocated to the barbell free weight group will perform six weeks of squat resistance exercise using a an olympic barbell and free weight of high loads.
Behavioral: Flywheel squats versus free weight high load squats for explosive actions in football
Over the course of the interventions, all players in all three groups will be instructed to adhere to their two-three weekly football practices and preseason matches of their team (~one weekly match). The flywheel group performes squat resistance exercise in using a flywheel device, and the barbell free weight group performes squat resistance exercise using an Olympic barbell and weights.

Active Comparator: Control
All players in all three groups (including control group) will be instructed to adhere to their two-three weekly football practices and preseason matches of their team (~one weekly match).
Behavioral: Flywheel squats versus free weight high load squats for explosive actions in football
Over the course of the interventions, all players in all three groups will be instructed to adhere to their two-three weekly football practices and preseason matches of their team (~one weekly match). The flywheel group performes squat resistance exercise in using a flywheel device, and the barbell free weight group performes squat resistance exercise using an Olympic barbell and weights.




Primary Outcome Measures :
  1. 10 meter sprint time [ Time Frame: from baseline (pre-test) at week 1, to post-test, following six weeks of squat resistance exercise at week 7.. ]
    change in seconds in 10 meter sprint time


Secondary Outcome Measures :
  1. countermovement jump height [ Time Frame: from baseline (pre-test) at week 1, to post-test, following six weeks of squat resistance exercise at week 7. ]
    change in centimeters jumped in countermovement jump height

  2. one repetition maximum partial range of motion squat [ Time Frame: from baseline (pre-test) at week 1, to post-test, following six weeks of squat resistance exercise at week 7. ]
    change in kilograms lifted in one repetition maximum partial range of motion squat

  3. Weight [ Time Frame: from baseline (pre-test) at week 1, to post-test, following six weeks of squat resistance exercise at week 7. ]
    change in kilograms measured as body mass



Information from the National Library of Medicine

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Ages Eligible for Study:   18 Years to 40 Years   (Adult)
Sexes Eligible for Study:   Male
Accepts Healthy Volunteers:   Yes
Criteria

Inclusion Criteria:

  • play at a adult (>16 years in Norway) football team that has an overall exercise load of two and/or three football practices in addition to one preseason football match a week.

Exclusion Criteria:

  • Injuries that makes resistance exercise unachievable

Information from the National Library of Medicine

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.

Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT04113031


Locations
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Norway
Lars Petter Rotvold Nilsen
Tromsø, Troms, Norway, 9037
Sponsors and Collaborators
University of Tromso
Investigators
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Principal Investigator: Svein Arne Pettersen, MSc UiT The Arctic University of Norway

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Responsible Party: University of Tromso
ClinicalTrials.gov Identifier: NCT04113031    
Other Study ID Numbers: 2019/374030
First Posted: October 2, 2019    Key Record Dates
Last Update Posted: October 8, 2019
Last Verified: October 2019
Individual Participant Data (IPD) Sharing Statement:
Plan to Share IPD: No
Plan Description: Lars Petter R Nilsen and Edvard H Sagelv are the only two researchers with access to the data.

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Studies a U.S. FDA-regulated Drug Product: No
Studies a U.S. FDA-regulated Device Product: No
Keywords provided by University of Tromso:
Sprint
Jump
Maximal Strength
Power