FAT-CENTR: Difference in Central Fatigue During Two Ultra-endurance Practices: Running vs. Cycling

• Sponsor: Centre Hospitalier Universitaire de Saint Etienne (Other)
• Overall Status: Completed
• CT.gov ID: NCT04511858
• Collaborator: (none)
• Enrollment: 19
• Location: 1
• Arms: 2
• Actual Duration (Months): 4.3
• Patients Per Site Per Month: 4.4

Study Details

Study Description

Brief Summary

The mechanisms contributing to muscle fatigue in extreme long-duration exercise bouts are poorly understood. Ultra-endurance exercise is an excellent model for the study of adaptive responses to extreme loads and stress and it is an especially useful model for documenting the origins of central fatigue. This protocol will compare fatigue during and after ultra-endurance exercise bouts that result in moderate lower-limb tissue damage (i.e. cycling) or significant damage (i.e. running). The results of this protocol will allow us to further understanding of the reasons for major central fatigue, i.e. within the central nervous system, in ultra-endurance.

Condition or Disease	Intervention/Treatment	Phase
Ultra-marathon Runners	Other: maximum effort test on a cycloergometer; Other: maximum effort test on a treadmill	N/A

Study Design

• Study Type: Interventional
• Actual Enrollment: 19 participants
• Allocation: Randomized
• Intervention Model: Crossover Assignment
• Intervention Model Description: Prospective study of physiopathology on subjects specializing in endurance and ultra-endurance: comparing running vs. cycling. Cross-over: each subject will carry out the 2 experimental conditions (running and cycling) according to a randomized order of passage, respecting a wash-out of 2 weeks.Prospective study of physiopathology on subjects specializing in endurance and ultra-endurance: comparing running vs. cycling. Cross-over: each subject will carry out the 2 experimental conditions (running and cycling) according to a randomized order of passage, respecting a wash-out of 2 weeks.
• Masking: None (Open Label)
• Primary Purpose: Basic Science
• Official Title: Difference in Central Fatigue During Two Ultra-endurance Practices: Running vs. Cycling
• Actual Study Start Date: Mar 5, 2021
• Actual Primary Completion Date: May 28, 2021
• Actual Study Completion Date: Jul 15, 2021

Arms and Interventions

Arm	Intervention/Treatment
Experimental: Running endurance Athletes wiil run for 5 hours in a row.	Other: maximum effort test on a treadmill; 5 h test on treadmill
Experimental: Cycling endurance Athletes wiil cycle for 5 hours in a row.	Other: maximum effort test on a cycloergometer; 5 h test on cycloergometer

Outcome Measures

Primary Outcome Measures

1. Maximum level of voluntary activation of relative central fatigue [Before and immediately after 5h exercise]

   measured in isometric mode of the knee extensors, between the value before and immediately after a 5-hour cycling or running event at the same relative intensity

Secondary Outcome Measures

1. Maximum level of voluntary activation of fatigue centrale absolute [Before and immediately after 5h exercise]

   measured in isometric mode of the knee extensors, between the value before the 5h cycling or running and the value after absolute exhaustion

2. Maximum level of voluntary activation with electrical evoked activation [Before and immediately after 5h exercise]

   tests with measurement of the maximum voluntary with evoked electrical between the value before and immediately after a 5-hour cycling or running event at the same relative intensity

3. Spinal excitability [Before and immediately after 5h exercise]

   thoracic spine stimulation for the recording of thoracic motor evoked potentials

4. Corticospinal excitability [Before and immediately after 5h exercise]

   stimulation of the motor cortex for recording motor evoked potentials

5. Cortical excitability [Before and immediately after 5h exercise]

   ratio between stimulation of the motor cortex and thoracic spine stimulation

6. Measurement of isometric force values [Before and immediately after 5h exercise]

   subjects sitting on a Cybex type seat, with the knee and hip angle set at 90°. The foot will be attached to a strain-gauge sensor using a velcro strap attached to the ankle above the medial malleolus.

7. Measurement of speed, force and power values [Before and immediately after 5h exercise]

   assessment of fatigue in dynamic mode (calculation of the force/speed profile)

8. Red blood cells [Before and immediately after 5h exercise]

   blood sample

9. Platelets [Before and immediately after 5h exercise]

   blood sample

10. White blood cells [Before and immediately after 5h exercise]

    blood sample

11. Hemoglobin [Before and immediately after 5h exercise]

    blood sample

12. Mean corpuscular hemoglobin concentration [Before and immediately after 5h exercise]

    blood sample

13. C-reactive protein [Before and immediately after 5h exercise]

    blood sample

14. Creatine PhosphoKinase [Before and immediately after 5h exercise]

    blood sample

15. Interleukines [Before and immediately after 5h exercise]

    blood sample

16. Lactate [Before and immediately after 5h exercise]

    blood sample

17. Measurement of the time maintained at the speed corresponding to the 2nd ventilatory threshold [Before and immediately after 5h exercise]

    On treadmill

18. measurement of the time maintained at the power corresponding to the 2nd ventilatory threshold [Before and immediately after 5h exercise]

    On Cycloergometer

Eligibility Criteria

Criteria

• Ages Eligible for Study: 18 Years and Older
• Sexes Eligible for Study: Male
• Accepts Healthy Volunteers: Yes

Inclusion Criteria:

• Specialist in endurance and ultra-endurance. in the 2 disciplines: running and cycling (triathletes, duathletes or trailers achieving at least 30% of their training volume in cycling), and having at least finished one long distance event in the last 2 years,

• Affiliated or beneficiary of a social security scheme.

• Signature of the consent form

Exclusion Criteria:

• Any subject who has been injured in the 3 months prior to the protocol

• Anyone with chronic joint pathologies (e.g.: repetitive sprains, patellar or ligament problems).

• Any subject with chronic or central neurological pathologies

• Any subject with a contraindication to magnetic stimulation

• Use of neuro-active substances likely to alter cortico-spinal excitability (hypnotics, antiepileptics, psychotropic drugs, muscle relaxants) on the study.

• Contraindication to the application of a magnetic field:

• Heart or respiratory insufficiency.

• Subject with a cardiac pace maker.

• Cardiac valve wear and serious cardiovascular diseases.

• Presence of prosthetic material or ferromagnetic foreign bodies in the head.

• Presence of cochlear implants or ocular prosthetic material.

• History of neurosurgical interventions.

• Neurological diseases that may affect brain structures and cognitive abilities (e.g., intracranial tumour, multiple sclerosis, history of stroke or traumatic brain injury).

• History of comitiality, contralateral knee disease or musculoskeletal disease.

• Any subject participating at the same time in another interventional experiment requiring physical exercise.

• Any subject who has taken corticosteroids within 3 months (inhalation, infiltration or history of prolonged corticosteroid therapy).

• Any subject under guardianship or curatorship

Contacts and Locations

Locations

	Site	City	State	Country	Postal Code
1	CHU Saint-Etienne	Saint-Étienne		France	42000

Sponsors and Collaborators

• Centre Hospitalier Universitaire de Saint Etienne

Investigators

• Principal Investigator: Léonard FEASSON, MD PhD, CHU SAINT-ETIENNE
• Study Director: Guillaume MILLET, PhD, SAINT-ETIENNE UNIVERSITY

Study Documents (Full-Text)

None provided.

More Information

Publications

None provided.

• Responsible Party: Centre Hospitalier Universitaire de Saint Etienne
• ClinicalTrials.gov Identifier: NCT04511858
• Other Study ID Numbers: 19CH217; 2020-A01714-35
• First Posted: Aug 13, 2020
• Last Update Posted: Nov 24, 2021
• Last Verified: Nov 1, 2021

• Individual Participant Data (IPD) Sharing Statement: No
• Plan to Share IPD: No
• Studies a U.S. FDA-regulated Drug Product: No
• Studies a U.S. FDA-regulated Device Product: No
• Keywords provided by Centre Hospitalier Universitaire de Saint Etienne: central fatigue; peripheral fatigue; ultra-endurance exercise; corticospinal excitability
• Additional relevant MeSH terms: Fatigue

Study Results

No Results Posted as of Nov 24, 2021