Utility and Validity of a High-intensity, Intermittent Exercise Protocol

The Utility and Validity of a High-intensity, Intermittent Exercise Protocol in Male Jumping Athletes

The purpose of this study is to identify an exercise-induced fatigue protocol to mimic central and peripheral acute fatigue effects associated with participation in vigorous dynamic sports activities and to understand the expected central (cardiovascular) and peripheral (muscular) impact of this protocol.

Study Overview

• Status: Completed
• Conditions: Fatigue
• Intervention / Treatment: Other: Fatigue protocol

Detailed Description

Fatigue-related parameters (BORG, heart rate, blood lactate level, concentric/eccentric force of the quadriceps muscle) will be measured before and after different short-term high-intensity, intermittent exercise protocols.

• Study Type: Interventional
• Enrollment (Actual): 20
• Phase: Not Applicable

Contacts and Locations

Study Locations

• Belgium
  • Oost-Vlaanderen
    • Gent, Oost-Vlaanderen, Belgium, 9000
      • Vakgroep Revalidatiewetenschappen

Participation Criteria

Eligibility Criteria

• Ages Eligible for Study: 18 years to 45 years (Adult)
• Accepts Healthy Volunteers: No
• Genders Eligible for Study: Male

Description

Inclusion Criteria:

• Men
• ≥ 18 years
• Volley- and basketball, non-elite
• ≥ 3 times per week sports participation
• No acute or overuse low back/lower extremity injuries in the past 6 months

Exclusion Criteria:

• Women
• <18 years
• >45 years
• other sports than volley- and basketball
• elite players
• <3 times per week sports participation
• acute or overuse low back/lower extremity injuries in the past 6 months

Study Plan

How is the study designed?

Design Details

• Primary Purpose: Screening
• Allocation: Randomized
• Interventional Model: Crossover Assignment
• Masking: Double

Number of Arms

2

Arms and Interventions

Participant Group / Arm	Intervention / Treatment
Experimental: All-out, high-intensity, intermittent exercise protocol	Other: Fatigue protocol; During the fatigue protocol, participants will sprint forward 5 m, cut at a 90° angle, sprint forward another 5 m, and backpedal 5 m. This activity will be repeated 4 times before participants will complete a series of hurdle activities. First, they will perform 2-legged jumps over 5 hurdles that are 30 cm high, turn, and repeat the jumps. Second, they will perform side-stepping exercises over the 5 hurdles. Third, they will complete four 5-m lateral shuffles.
Experimental: 5 min, high-intensity, intermittent exercise protocol	Other: Fatigue protocol; During the fatigue protocol, participants will sprint forward 5 m, cut at a 90° angle, sprint forward another 5 m, and backpedal 5 m. This activity will be repeated 4 times before participants will complete a series of hurdle activities. First, they will perform 2-legged jumps over 5 hurdles that are 30 cm high, turn, and repeat the jumps. Second, they will perform side-stepping exercises over the 5 hurdles. Third, they will complete four 5-m lateral shuffles.

What is the study measuring?

Primary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Heart rate	Heart rate, expressed in beats per minute	This parameters will be continuously monitored 10 minutes before the start of the fatigue protocol until 30 minutes after completion of the protocol
Isokinetic dynamometry	Isokinetic dynamometry of the quadriceps muscle	This parameter will be monitored 10 minutes before the start of the fatigue protocol
Isokinetic dynamometry	Isokinetic dynamometry of the quadriceps muscle	This parameter will be monitored immediately after completion of the protocol
Isokinetic dynamometry	Isokinetic dynamometry of the quadriceps muscle	This parameter will be monitored 15 minutes after completion of the protocol
Isokinetic dynamometry	Isokinetic dynamometry of the quadriceps muscle	This parameter will be monitored 30 minutes after completion of the protocol
Blood lactate level	Blood lactate level, expressed in millimol per liter	This parameters will be monitored 10 minutes before the start of the fatigue protocol
Blood lactate level	Blood lactate level, expressed in millimol per liter	This parameters will be monitored 10 minutes after completion of the protocol
BORG	BORG-score, indicating the rate of perceived exertion for legs and breathlessness	This parameters will be continuously monitored 10 minutes before the start of the fatigue protocol until 30 minutes after completion of the protocol

Secondary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Circuit time	Time to perform the fatigue protocol	Time will be recorded immediately after completion of the fatigue protocol

Collaborators and Investigators

• Sponsor: University Ghent

Study record dates

Study Major Dates

• Study Start (Actual): September 7, 2020
• Primary Completion (Actual): June 30, 2021
• Study Completion (Actual): November 19, 2021

Study Registration Dates

• First Submitted: August 13, 2020
• First Submitted That Met QC Criteria: August 25, 2020
• First Posted (Actual): August 31, 2020

Study Record Updates

• Last Update Posted (Actual): November 22, 2021
• Last Update Submitted That Met QC Criteria: November 19, 2021
• Last Verified: November 1, 2021

More Information

Terms related to this study

• Additional Relevant MeSH Terms: Fatigue
• Other Study ID Numbers: BC-07679

Plan for Individual participant data (IPD)

• Plan to Share Individual Participant Data (IPD)?: Undecided
• IPD Plan Description: This is not yet decided.

Drug and device information, study documents

• Studies a U.S. FDA-regulated drug product: No
• Studies a U.S. FDA-regulated device product: No
• product manufactured in and exported from the U.S.: No