ClinicalTrials.gg
RecruitingNCT07736482Updated Jul 31, 2026

Relationship Between Single- and Dual-Task Obstacle Crossing Performance and Fatigue and Disability in Multiple Sclerosis

An observational study in Multiple Sclerosis, sponsored by Afyonkarahisar Health Sciences University. Recruiting at 1 site in Turkey (Türkiye). Open to participants aged 18 Years to 65 Years. Per ClinicalTrials.gov, last updated 2026-07-31.

Sponsored by Afyonkarahisar Health Sciences University · Observational

From the registry’s dates

  • Started Mar 2026; still recruiting 7 months later.
Study type
Observational
Model
Case-only
Time perspective
Cross-sectional
Enrollment
30
Ages
18 Years to 65 Years
Sex
All
01

Where this study stands

Counted across the records on this site · 2026-11-12

Among 307 studies in Multiple Sclerosis with a site in Turkey — 59 open to participants now, 78 under way, 10 of them phase 3. Multiple Sclerosis · Turkey.

Planned enrollment
90th of 103
30 · median 60
Started
2026
with 42 others
Observational
103 of 307
27 open now
Primary completion
2026-07
later than 46 of 77 live
Registered
293rd of 307
by date

Among the 307 studies in Multiple Sclerosis with a site in Turkey, this one is the 90th largest by planned enrollment of the 103 observational ones that give a count, is one of 43 that started in 2026, is one of 103 observational ones, reaches primary completion later than 46 of the 77 other live ones, and was the 293rd registered.

Multiple Sclerosis

3,267 studies on the registry are indexed under Multiple Sclerosis; 662 are open to participants now.

Browse Multiple Sclerosis studies →

Open to participants now

59 of the 307 studies in Multiple Sclerosis with a site in Turkey are open now. Recruiting first, the newest first:

53 more — sign in →

All 59 open studies →

A study can be open while its sites in Turkey have not opened yet or have stopped. Only those recruiting at a site in Turkey →

Who these studies take

Of the 430 Multiple Sclerosis studies recruiting now, 163 (38%) set no upper age limit and 211 (49%) stop at 75 or younger; 40 take children under 18; 96 take healthy volunteers.

This study: 18 Years to 65 Years · all sexes · no healthy volunteers.

The full table on the hub →

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Watch this landscapeDownload CSVNarrow it in search →With an account: a weekly mail of what changed among 307 studies in Multiple Sclerosis with a site in Turkey, or all of them as a file.
02

Study summary

This cross-sectional observational study aims to investigate the relationship between obstacle crossing performance under single-task and dual-task conditions and the levels of fatigue and disability in individuals with Relapsing-Remitting Multiple Sclerosis (RRMS). Walking performance will be assessed under standard walking and obstacle crossing conditions with and without a concurrent cognitive task. The study will examine how increased task complexity affects walking performance and its association with fatigue, disability, cognition, and functional mobility.

Read the detailed description

Multiple sclerosis (MS) is a chronic inflammatory disease of the central nervous system that frequently causes gait impairment, fatigue, cognitive dysfunction, and reduced functional mobility. Since daily activities often require simultaneous motor and cognitive performance, assessment under dual-task conditions provides clinically meaningful information beyond conventional gait evaluation.

Obstacle crossing represents a more demanding walking task than level walking and may better reflect mobility challenges encountered in everyday life. Although dual-task walking has been investigated in individuals with MS, studies examining obstacle crossing performance under both single-task and dual-task conditions and its relationship with fatigue and disability remain limited.

This cross-sectional observational study will include men and women aged 18 to 65 years with Relapsing-Remitting Multiple Sclerosis who are followed at the Neurology Outpatient Clinic of Kocaeli City Hospital. Participants will complete walking assessments under four conditions: single-task walking, dual-task walking, single-task obstacle crossing, and dual-task obstacle crossing. The dual-task condition will require participants to perform serial-3 subtraction while walking.

Clinical assessments including fatigue, walking limitation, cognition, health-related quality of life, and fear of movement will also be collected. The study aims to determine the association between obstacle crossing performance and fatigue and disability levels in individuals with RRMS.

03

Conditions studied

  • Multiple Sclerosis

Keywords

  • Multiple sclerosis
  • Dual Task
  • Fatigue
04

Who can participate

Ages eligible
18 Years to 65 Years
Sexes eligible
All
Accepts healthy volunteers
No
Sampling method
Non-probability sample

Study population

Adults aged 18 to 65 years with Relapsing-Remitting Multiple Sclerosis who are followed at the Neurology Outpatient Clinic of Kocaeli City Hospital, have an EDSS score between 0 and 6, are clinically stable, and meet all eligibility criteria.

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Inclusion criteria

  • Age between 18 and 65 years.
  • Diagnosis of Multiple Sclerosis according to the 2017 McDonald criteria.
  • Diagnosis of Relapsing-Remitting Multiple Sclerosis.
  • Expanded Disability Status Scale (EDSS) score between 0 and 6.
  • Clinically stable disease during the previous 6 months.
  • (MoCA) score of 26 or higher.
  • Able to speak and understand Turkish.
  • Able to provide written .

Exclusion criteria

Exclusion Criteria:

  • Multiple sclerosis relapse within the previous month.
  • Physician-diagnosed psychiatric disorder.
  • Neurological, orthopedic, cardiac, or pulmonary disease other than Multiple Sclerosis that could interfere with study assessments.
  • (MoCA) score below 26.
Terms in these criteria, in plain language(2)

Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.

MMSE and MoCA

Short tests of memory and thinking, each scored out of 30. Lower scores suggest more difficulty; criteria give a range, either to include people with memory problems or to leave them out.

Informed consent

Before you join, the study team explains what taking part involves — its purpose, what happens, the risks and possible benefits — and answers your questions, so you can decide freely. Consent is usually recorded on a form (the informed consent form, ICF) signed by you or, where the law allows, by someone legally authorised to decide for you.

You can keep asking questions during the study, you are told of new information that matters, and you can choose to leave at any time.

05

Study design

Observational model
Case-only
Time perspective
Cross-sectional
Enrollment
30 participants (estimated)
Target follow-up
1 Day
Patient registry
Yes

Groups and cohorts

  • Relapsing-Remitting Multiple Sclerosis

    Adults aged 18 to 65 years with a diagnosis of Relapsing-Remitting Multiple Sclerosis (RRMS) according to the 2017 McDonald criteria, an Expanded Disability Status Scale (EDSS) score between 0 and 6, a Montreal Cognitive Assessment (MoCA) score of 26 or higher, and a clinically stable disease course during the previous 6 months. Participants will undergo observational assessments of walking, obstacle crossing performance, fatigue, cognition, functional mobility, and fear of movement. No intervention will be administered.

06

What researchers measure

Primary outcomes

  1. Dual-Task Cost During Obstacle Crossing

    Walking performance will be assessed using the 10-Meter Walk Test under four conditions: single-task walking, dual-task walking with serial-3 subtraction, single-task obstacle crossing, and dual-task obstacle crossing with serial-3 subtraction. Walking time and cognitive task performance will be recorded. Dual-Task Cost (DTC, %) will be calculated to quantify the effect of performing a concurrent cognitive task during walking.

    Time frame: Baseline

Secondary outcomes

  1. The Modified Fatigue Impact Scale (MFIS)

    The Modified Fatigue Impact Scale (MFIS) evaluates the impact of fatigue on physical, cognitive, and psychosocial functioning during the previous month. Total scores range from 0 to 84, with higher scores indicating greater fatigue impact

    Time frame: Baseline

  2. Multiple Sclerosis Walking Scale-12 (MSWS-12)

    The Multiple Sclerosis Walking Scale-12 is a patient-reported outcome measure that evaluates the impact of multiple sclerosis on walking ability. Raw total scores range from 12 to 60, with higher scores indicating greater walking limitation.

    Time frame: Baseline

  3. Monitoring My Multiple Sclerosis Scale (MMMS)

    The Monitoring My Multiple Sclerosis Scale (MMMS) evaluates physical status, relationships, energy, and cognitive or mental status. Total scores range from 26 to 104, with higher scores indicating better health status and functioning.

    Time frame: Baseline

  4. Tampa Scale for Kinesiophobia (TSK)

    The Tampa Scale for Kinesiophobia (TSK) is a 17-item questionnaire used to assess fear of movement. Total scores range from 17 to 68, with higher scores indicating greater kinesiophobia.

    Time frame: Baseline

  5. Fatigue Severity Scale (FSS)

    The Fatigue Severity Scale (FSS) assesses the severity of fatigue and its impact on daily functioning. It consists of 9 items scored from 1 to 7. The total score is calculated as the mean of the 9 items, ranging from 1 to 7, with higher scores indicating greater fatigue severity.

    Time frame: Baseline

07

Study locations

1 of 1 sites recruiting
08

Timeline

Tracking since Sep 25, 2026
ElapsedEstimatedEstimated, not yet reached

Ran from Mar 2026 to primary completion in Jul 2026, 4 months.

How these figures are worked out, and which studies are left out of them.

Registered
Jul 26, 2026
First posted
Jul 30, 2026
StartActual
Mar 20, 2026
Primary completionActual
Jul 25, 2026
CompletionEst.
Feb 20, 2027
Last update
Jul 31, 2026
What these dates mean
Start.
When the first participant enrolled; while estimated, when the study expects to open to recruitment.
Primary completion.
When the last participant was examined or treated to collect data for the study's main question, its primary outcome. A study that stopped early gives the date its data collection stopped.
Completion.
When the last participant's last visit took place, for every outcome, secondary ones and side effects included: the end of the study. Often later than primary completion, sometimes the same day.
Actual and Est.
Actual means the registry says the date has happened. Est. (estimated) is a date the sponsor plans or expects. It can still move, and the sponsor is expected to change it to actual once it has passed.
No changes since tracking began. The registry record was last updated on Jul 31, 2026, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
09

Registry details

Key details

Study ID
NCT07736482
Responsible party
Yunus Emre Kundakçı (Assoc. Prof., Afyonkarahisar Health Sciences University) — Principal investigator
First posted
Jul 30, 2026
Start date
Mar 20, 2026
Primary completion
Jul 25, 2026
Completion
Feb 20, 2027 (estimated)
Last update
Jul 31, 2026

Study contacts

Yunus Emre Kundakcı, Assoc. Prof.
Contact
y.emre.kndkc@gmail.com
+90 272 246 28 34|

Oversight

FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

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