Mental Fatigue Effects on Posture and Spinal Reflexes
Starting soon · Not applicable
Conditions studied: Mental Fatigue
In brief
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.
Key facts
- Study ID
- NCT07650903
- Run by
- Izmir Bakircay University
- People needed
- 26
- Starts
- 2026-07-01
- Expected to finish
- 2026-12-01
- Last updated by the study team
- 2026-06-16
Who can join
Age: 18 and older, up to 35. Sex: any. Healthy volunteers: accepted.
You may qualify if…
- Healthy participants aged between 18 and 35 years
- Recreational active
You may not qualify if…
- Previous major lower limb injury (last 6 months)
- Present neurological or musculoskeletal disorders
- Involvement in another concurrent physical or cognitive intervention study
Where it is running
- Vrije Universiteit Brussel — Brussels, Pleinlaan 2, Belgium
Full record on ClinicalTrials.gov
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