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Effect of Prolonged Military Exercises With High Load Carriage, on Neuromuscular Fatigue and Physiological/Biomechanical Responses

NCT ID: NCT01127191

Last Updated: 2012-07-25

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

COMPLETED

Total Enrollment

10 participants

Study Classification

OBSERVATIONAL

Study Start Date

2010-03-31

Study Completion Date

2010-04-30

Brief Summary

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Land military missions generally combine prolonged walking/moderate-pace-running and other physical actions such as creeping, jumping, shooting,… which are associated with the direct carrying of high to severe loads of equipment and supplies (20-30 to 50 kg) by soldiers. For an infantry section, "typical" intervention phases last about 20-24 h and combine variable intensity grades. Consequently, military mission characteristics are an interesting investigation field of human fatigue. Previous studies have investigated human neuromuscular alterations after prolonged "normal" locomotion exercises \[Millet et al., 2004, 2009\], thus the aim of this study is to characterize the neuromuscular determinants of fatigue induced by a 24-h Simulated Military Effort (SME) and a 4-h Military Road March (MM), both performed with high load carriage. Additionally, the consequences of fatigue on physiological and biomechanical parameters of locomotion will be investigated.

Detailed Description

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Conditions

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Healthy

Keywords

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military exercises neuromuscular fatigue physiological responses biomechanical responses simulated military effort high load carriage Healthy voluntary

Study Design

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Observational Model Type

COHORT

Study Time Perspective

PROSPECTIVE

Study Groups

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Military

military equipment

Intervention Type OTHER

Military exercise of 24 hours

Interventions

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military equipment

Military exercise of 24 hours

Intervention Type OTHER

Eligibility Criteria

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Inclusion Criteria

* to be a male
* to have a VO2max \> 45ml/min/kg (mean observed value in military subjects)
* to be aged from 30 to 45
* to be recently retreated from National Army
* to be highly experienced in military efforts
* to be trained in exercises involving load carrying
* to benefit from a social security insurance

Exclusion Criteria

* All subjects with recent (\< 3 month) bone, articular or muscle diseases.
* All subjects presenting a clinic sign of intolerance to testing procedures, especially subjects with knee, ankle, hip or back diseases.
* All subjects intolerant to muddy or wooded environment.
* All subjects presenting a clinic sign of intolerance to exercise, and particularly to running or walking while carrying a load
* All subjects involved at the same time in another medical research
* All subjects militarily active
* All subjects with cardiac or pulmonary identified and known diseases
Minimum Eligible Age

30 Years

Maximum Eligible Age

45 Years

Eligible Sex

MALE

Accepts Healthy Volunteers

Yes

Sponsors

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Centre Hospitalier Universitaire de Saint Etienne

OTHER

Sponsor Role lead

Responsible Party

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Responsibility Role SPONSOR

Principal Investigators

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Roger OULLION, Dr

Role: PRINCIPAL_INVESTIGATOR

CHU SAINT-ETIENNE

Locations

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CHU de Saint-Etienne

Saint-Etienne, , France

Site Status

Countries

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France

References

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Grenier JG, Millet GY, Peyrot N, Samozino P, Oullion R, Messonnier L, Morin JB. Effects of extreme-duration heavy load carriage on neuromuscular function and locomotion: a military-based study. PLoS One. 2012;7(8):e43586. doi: 10.1371/journal.pone.0043586. Epub 2012 Aug 22.

Reference Type DERIVED
PMID: 22927995 (View on PubMed)

Other Identifiers

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2009-A01346-51

Identifier Type: OTHER

Identifier Source: secondary_id

0901110

Identifier Type: -

Identifier Source: org_study_id