- ICH GCP
- 미국 임상 시험 레지스트리
- 임상시험 NCT07650903
Mental Fatigue Effects on Posture and Spinal Reflexes
Effects of Mental Fatigue on Posture and Spinal Reflexes Modulations
This randomized crossover study investigates the effects of mental fatigue on postural control and spinal reflex excitability in healthy physically active adults aged 18-35 years. Participants will complete two experimental conditions: a mentally fatiguing Stroop task and a control condition involving passive documentary watching, separated by at least 48 hours. Postural control will be assessed using force plate measures of center of pressure displacement during bipedal and unipedal stance, with and without concurrent cognitive dual-tasking. In parallel, spinal reflex excitability will be evaluated using H-reflex recordings from the triceps surae muscles across sitting and standing postures.
The primary aim is to determine whether mental fatigue increases postural sway, particularly in more challenging balance conditions such as single-leg stance. The secondary aim is to examine whether mental fatigue alters the normal modulation of spinal reflex excitability across progressively demanding postural tasks. Additional biomechanical and neuromuscular measures, including EMG activity and hip kinematics, will be recorded to provide insight into underlying control mechanisms.
The study will include approximately 26 participants, with each serving as their own control. Data will contribute to understanding how cognitive fatigue influences balance control and spinal-level neuromuscular regulation.
연구 개요
연구 유형
등록 (추정된)
단계
- 해당 없음
연락처 및 위치
연구 연락처
- 이름: Sidney Grosprêtre, PhD
- 전화번호: +32 (0)2 629 22 22
- 이메일: sidney.grospretre@univ-fcomte.fr
연구 장소
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Pleinlaan 2
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Brussels, Pleinlaan 2, 벨기에, 1050
- Vrije Universiteit Brussel
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연락하다:
- Sidney Grosprêtre, PhD
- 전화번호: +32 (0)2 629 22 22
- 이메일: sidney.grospretre@univ-fcomte.fr
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참여기준
자격 기준
공부할 수 있는 나이
- 성인
건강한 자원 봉사자를 받아들입니다
설명
Inclusion Criteria:
- Healthy participants aged between 18 and 35 years
- Recreational active
Exclusion Criteria:
- Previous major lower limb injury (last 6 months)
- Present neurological or musculoskeletal disorders
- Involvement in another concurrent physical or cognitive intervention study
공부 계획
연구는 어떻게 설계됩니까?
디자인 세부사항
- 주 목적: 기초 과학
- 할당: 무작위
- 중재 모델: 크로스오버 할당
- 마스킹: 하나의
무기와 개입
참가자 그룹 / 팔 |
개입 / 치료 |
|---|---|
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실험적: Control Condition
Participants watch a 60-minute neutral documentary of their choice.
This condition is designed to control for time, visual input, and arousal without inducing mental fatigue.
Postural control and spinal reflex excitability are assessed immediately before and after the task.
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Participants watch a 60-minute neutral documentary of their choice.
This condition is designed to match the mental fatigue intervention in duration and general sensory engagement without inducing cognitive fatigue.
No cognitive task performance is required.
Subjective mental fatigue is assessed at equivalent time points using a visual analogue scale.
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실험적: Mental Fatigue Condition
Participants complete a 60-minute computerized Stroop task designed to induce mental fatigue.
The task involves continuous performance of color-word interference trials adjusted to individual capacity.
Postural control and spinal reflex excitability are assessed immediately before and after the task.
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Participants complete a 60-minute computerized Stroop color-word task designed to induce mental fatigue.
The task consists of repeated incongruent stimuli requiring rapid and accurate responses, with difficulty individualized based on a prior maximal Stroop performance test.
Performance (reaction time and accuracy) is continuously recorded.
Subjective mental fatigue is assessed intermittently during the task using a visual analogue scale.
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연구는 무엇을 측정합니까?
주요 결과 측정
결과 측정 |
측정값 설명 |
기간 |
|---|---|---|
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Center of Pressure (CoP) Displacement (Postural Sway)
기간: Pre-intervention and immediately post-intervention (each experimental session)
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Postural sway will be assessed using center of pressure (CoP) displacement area and oscillation parameters measured during bipedal and unipedal stance on a force plate.
Higher values indicate greater postural instability.
Comparisons will be made between mental fatigue and control conditions, pre- and post-intervention.
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Pre-intervention and immediately post-intervention (each experimental session)
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Subjective Mental Fatigue
기간: During intervention (every 15 minutes) and immediately post-intervention
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Subjective mental fatigue will be assessed using a visual analog scale (VAS) ranging from 0 (no fatigue) to 100 (extreme fatigue).
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During intervention (every 15 minutes) and immediately post-intervention
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2차 결과 측정
결과 측정 |
측정값 설명 |
기간 |
|---|---|---|
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Spinal Reflex Excitability (H-reflex Modulation)
기간: Pre-intervention and immediately post-intervention across sitting, bipedal stance, and unipedal stance conditions
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Spinal reflex excitability will be assessed using H-reflex amplitude (H50 and Hmax), normalized to maximal M-wave (Mmax), recorded from the triceps surae muscles (soleus, medial gastrocnemius, lateral gastrocnemius) during sitting, bipedal stance, and unipedal stance.
Changes will be compared between mental fatigue and control conditions.
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Pre-intervention and immediately post-intervention across sitting, bipedal stance, and unipedal stance conditions
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Surface Electromyography (EMG) Activity of Postural Muscles
기간: Continuous recording during postural tasks, pre-intervention and immediately post-intervention (each condition)
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Muscle activation will be assessed using root mean square (RMS) electromyography (EMG) activity recorded from the soleus, medial gastrocnemius, lateral gastrocnemius, tibialis anterior, vastus medialis, and multifidus muscles, normalized to maximal M-wave (MMAX).
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Continuous recording during postural tasks, pre-intervention and immediately post-intervention (each condition)
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Hip / Leg Movement (IMU Angular Velocity)
기간: Pre-intervention and immediately post-intervention during bipedal and unipedal stance
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Hip and leg movements will be assessed using inertial measurement unit (IMU) sensors placed at the proximal femoral epicondyle.
Outcome is the resultant angular velocity across movement axes during postural tasks.
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Pre-intervention and immediately post-intervention during bipedal and unipedal stance
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공동 작업자 및 조사자
수사관
- 연구 책임자: Bart Roelands, Professor, Vrije Universiteit Brussel
연구 기록 날짜
연구 주요 날짜
연구 시작 (추정된)
기본 완료 (추정된)
연구 완료 (추정된)
연구 등록 날짜
최초 제출
QC 기준을 충족하는 최초 제출
처음 게시됨 (실제)
연구 기록 업데이트
마지막 업데이트 게시됨 (실제)
QC 기준을 충족하는 마지막 업데이트 제출
마지막으로 확인됨
추가 정보
이 연구와 관련된 용어
기타 연구 ID 번호
- MFspinal
개별 참가자 데이터(IPD) 계획
개별 참가자 데이터(IPD)를 공유할 계획입니까?
IPD 계획 설명
약물 및 장치 정보, 연구 문서
미국 FDA 규제 의약품 연구
미국 FDA 규제 기기 제품 연구
이 정보는 변경 없이 clinicaltrials.gov 웹사이트에서 직접 가져온 것입니다. 귀하의 연구 세부 정보를 변경, 제거 또는 업데이트하도록 요청하는 경우 register@clinicaltrials.gov. 문의하십시오. 변경 사항이 clinicaltrials.gov에 구현되는 즉시 저희 웹사이트에도 자동으로 업데이트됩니다. .
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