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Prefrail ElderlyNeuroFitNCT07346989

Non-invasive Brain Stimulation on Functional Capacity in Prefrail Older Adults

A study testing tDCS and Virtual running in people with Prefrail Elderly, run by University of Valencia at 1 site in Spain.

Recruiting

Looking for participants now. Contact the study team or a site below to ask about taking part.

Sites and contacts
Official record
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Trial summary

The general objective of this study is to evaluate the effectiveness of non-invasive neuromodulation combined with a therapeutic exercise program on neuroplasticity and, therefore, on variables related to functional capacity and quality of life, in prefrail older adults. Read more about this study

Who is it for?
Ages 65 to 90 years
Conditions the study is for
Prefrail Elderly
What is being tested?
tDCS and Virtual running
Could I receive a placebo?
Yes, some participants may receive a placebo
How many people
80 participants
Where
1 siteSpain
Study dates
15 Jan 2026to Jul 2028
Phase
Interventional
Are there results?
Not yet: the study is under way

Key requirements

Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.

  • Ages 65 to 90 years
  • All sexes
  • No healthy volunteers
  • Older adult

Who may be able to join

  • Age between 65 -90 years old
  • Meet 1-2 frailty criteria, according to Fried's Criteria.
  • Ability to understand instructions (Mini-Mental State Examination >23 points).
  • Signing of the informed consent.

Who cannot join

  • History of stroke within the past 6 months or hospital admission for any reason within the past 3 months.
  • Alterations of the central or peripheral nervous system
  • Alterations of the vestibular system
  • Concomitant diseases
  • Have a neurological pathology, cardiovascular musculoskeletal that contraindicates physical activity
  • Epilepsy or history, medications that lower the seizure threshold
Show all 14Show fewer
  • Cardiac pacemaker, endocranial and hearing implants
  • History of severe headaches
  • Uncontrolled intracranial or arterial hypertension
  • Heart and/or respiratory failure
  • Implanted medication pump
  • Skin lesions (psoriasis, eczema)
  • Serious head surgeries
  • Completing less than 80% of training sessions

Trial locations and contacts

1 site in 1 country. Contact the study team or a site near you to ask about taking part.

Marta Inglés de la Torre, PHD contact

0034963864003

marta.ingles@uv.es

Spain1 site, 1 recruiting
  • University of Valencia

    Valencia, Valencia, 46010

    Marta Inglés de la Torre, PhD, marta.ingles@uv.es

    Recruiting

Other trials in Spain

About this study

Official title: Effectiveness of Non-invasive Brain Stimulation on Functional Capacity in Prefrail Older Adults

The general objective of this study is to evaluate the effectiveness of non-invasive neuromodulation combined with a therapeutic exercise program on neuroplasticity and, therefore, on variables related to functional capacity and quality of life, in prefrail older adults.

Read the detailed description

Two non-invasive neuromodulation strategies (Virtual Running and Transcranial Direct Current Stimulation (tDCS)) will be studied. Thus, 2 sub-studies will be carried out (one for each intervention) and a comparison of the two interventions will be made, as described in the following sections. As specific objectives, for each of these sub-studies, the effect of the intervention program will be analyzed on: gait speed, general physical condition, frailty condition, static and dynamic functionality and gait quality, upper limb and lower limb isometric strength, quality of life, and neuroplasticity, in terms of plasma BDNF levels, in prefrail older adults.

Being tested
tDCS, tDCS placebo, Virtual running, Virtual running placebo
Keywords
Prefrail, Non-invasive neuromodulation, TDCS, Virtual running, Functional capacity, Elderly

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

  • tDCSOther

    The tDCS will be performed anodically (a-tDCS), and for 24 sessions, 3 days a week. The electrodes will be mounted on a neoprene helmet, in accordance with the International Standard 10-20 EEG System, for optimal targeting of the primary motor cortex M1. It will be a type of unihemispheric application, in which the anode will be located in the primary motor cortex (M1), and the cathode located in the orbitofrontal cortex contralateral to the anode. The treatment parameters will be: stimulation time of 20 minutes; intensity of 2mA, current rise-fall time at the beginning and end of stimulation of 30 seconds. They will then perform the therapeutic exercise protocol explained above.

  • tDCS placeboOther

    The instrumentation will be the same as in the actual tDCS intervention, but the device will be programmed to increase the intensity from 0 to 2 mA progressively during the first 30 seconds and then cease to provide the patient with the initial itchy sensation on the skin, similar to the real application. They will then perform the therapeutic exercise protocol explained above.

  • Virtual runningOther

    24 sessions will be applied, 3 days a week. The patient will be placed standing (with an ad-hoc designed assistance system) in front of a mirror (located at waist height) and a height-adjustable screen (from waist to caudal) where a video of real legs running on a treadmill will be projected. In order for the participant to feel the projected legs as their own, people with different body sizes will have been previously recorded running to have recordings with legs of different size and length. Each session will last 20 minutes. They will then perform the therapeutic exercise protocol explained above.

  • Virtual running placeboOther

    The instrumentation of the participants will be the same as in the intervention with virtual running. However, the projection will consist of a series of videos of landscapes in which no type of human or animal movement will appear in order not to stimulate the motor areas of the brain. They will then perform the therapeutic exercise protocol explained above.

Study groups in NCT07346989
Study groupRoleWhat they receive
tDCS groupExperimentalNot described
Receives: Other: tDCS
tDCS placebo groupPlacebo comparatorNot described
Receives: Other: tDCS placebo
VR groupExperimentalNot described
Receives: Other: Virtual running
VR placebo groupPlacebo comparatorNot described
Receives: Other: Virtual running placebo

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. Frailty Condition

    Fried's criteria (Frailty Phenotype) will be used. Briefly, the participant will be considered frail if he or she meets three or more of the following criteria: i) unintentional weight loss greater than 4.5 kg in the last year; ii) feeling of general exhaustion, reported by the patient himself; iii) low level of physical activity; (iv) slowness of progress; v) muscle weakness, assessed by handgrip strength. Those patients who meet one or two criteria will be considered pre-frail and those who do not meet either will be considered non-frail

    Measured: Five assessments: Baseline (T1); After the first session, at Day 1 (T2); Mid-term assessment, 4 weeks after the intervention starts (T3); After the intervention, 8 weeks (T4); Four weeks after the end of the intervention (follow-up assessment) (T5).

  2. Walking speed

    The 10m Walking Test will be used to assess the speed of the walk, which records the time needed to cover the distance of 10m. The higher the walking speed, the greater the functional capacity

    Measured: Five assessments: Baseline (T1); After the first session, at Day 1 (T2); Mid-term assessment, 4 weeks after the intervention starts (T3); After the intervention, 8 weeks (T4); Four weeks after the end of the intervention (follow-up assessment) (T5).

Secondary outcomes (7)
  1. Neuroplasticity

    Neruoplasticity will be determined from the concentration of BDNF in plasma. A nurse will draw blood samples in BD Vacutainer® tubes, with EDTA as an anticoagulant. It will be centrifuged at 1500 G for 15 minutes at 4⁰ C, the supernatant (plasma) will be collected in eppendorf type tubes, which will be frozen at -80⁰ C until subsequent analysis. For the determination of BDNF levels, the ChemiKine™ BDNF Sandwich kit for ELISA (Millipore, Temecula, CA, USA) will be used, according to the manufacturer's instructions

    Measured: Three assessments: Baseline (T1); After the intervention, 8 weeks (T4); Four weeks after the end of the intervention (follow-up assessment) (T5).

  2. Heart rate variability

    HRV will be measured during 5 minutes at rest before intervention and during 20 minutes while performing aerobic exercise (walking). HRV will be measured with the PolarH10 band (Polar ®, Finland).

    Measured: Five assessments: Baseline (T1); After the first session, at Day 1 (T2); Mid-term assessment, 4 weeks after the intervention starts (T3); After the intervention, 8 weeks (T4); Four weeks after the end of the intervention (follow-up assessment) (T5).

  3. Muscle strength

    Measurement of the isometric action of the lower limb muscles will be carried out by means of a load cell (Chronojump, Spain) connected to the corresponding software (Chronojump Boscosystem). Specifically, the isometric strength of the gluteus medius, quadriceps, and hamstrings will be measured. The participant will be asked for a maximum of three repetitions with a duration of five seconds each, and a rest between them of another thirty seconds. The maximum value will be recorded, as well as the average value of each of the three repetitions, and the average will then be obtained, which will be the variable used for the subsequent data analysis. As for upper limb strength, assessed by grip strength, this will be determined by a Lafayette hand dynamometer. 3 measurements of the dominant hand will be taken and the mean will be taken for further analysis. Higher values indicate greater muscle strength

    Measured: Three assessments: Baseline (T1); After the intervention, 8 weeks (T4); Four weeks after the end of the intervention (follow-up assessment) (T5).

  4. Quality of life EQ-5D

    Determined using the EQ-5D instrument, a measure of self-perceived health, consisting of two parts: the EQ-5D descriptive system, which assesses five dimensions of health (i.e. mobility, self-care, usual activities, pain/discomfort, and anxiety/depression) and a visual analogue scale (VAS), in which people must estimate their general health status on a scale from 0 to 100. Higher values indicate greater quality of life.

    Measured: Three assessments: Baseline (T1); After the intervention, 8 weeks (T4); Four weeks after the end of the intervention (follow-up assessment) (T5).

  5. Lower limb muscle power

    It will be recorded with the 5 times sit to stand test (5STST). The participant must sit down and get up from a chair and the time it takes to perform the activity is timed. The higher the speed, the greater lower limb power

    Measured: Five assessments: Baseline (T1); After the first session, at Day 1 (T2); Mid-term assessment, 4 weeks after the intervention starts (T3); After the intervention, 8 weeks (T4); Four weeks after the end of the intervention (follow-up assessment) (T5).

  6. Static and dynamic functionality and gait quality

    For this assessment, the FallSkip® tool will be used, which allows, by means of an inertial sensor incorporated in a smartphone, to record variables such as the medium-lateral and vertical displacement of the center of pressures in both dynamic and static, as well as to record the power to sit and get up from a chair and the variability of movement in a modified protocol of the Timed up and Go test. Based on the calculation of these variables, FallSkip® provides a fall risk score for each patient, ranging from very low, low, moderate, high, to very high risk, depending on the results obtained during the different test phases.

    Measured: Five assessments: Baseline (T1); After the first session, at Day 1 (T2); Mid-term assessment, 4 weeks after the intervention starts (T3); After the intervention, 8 weeks (T4); Four weeks after the end of the intervention (follow-up assessment) (T5).

  7. Static and dynamic functionality and gait quality with a dual task

    For this assessment, the FallSkip® tool will be used, which allows, by means of an inertial sensor incorporated in a smartphone, to record variables such as the medium-lateral and vertical displacement of the center of pressures in both dynamic and static, as well as to record the power to sit and get up from a chair and the variability of movement in a modified protocol of the Timed up and Go test. Based on the calculation of these variables, FallSkip® provides a fall risk score for each patient, ranging from very low, low, moderate, high, to very high risk, depending on the results obtained during the different test phases. For the dual task, a simultaneous activity will be used that will consist of numerical subtraction while walking. The higher punctuation, the better dual task functionality.

    Measured: Three assessments: Baseline (T1); After the intervention, 8 weeks (T4); Four weeks after the end of the intervention (follow-up assessment) (T5).

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted16 Jan 2026
  2. Study start15 Jan 2026
  3. Primary completionJul 2028 (estimated)
  4. Study completionJul 2028 (estimated)

Resources

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design
Study type
Interventional
Phase
Phase N/A
Primary purpose
Treatment
Allocation
Randomised
Intervention model
Parallel groups
Masking
Triple blind
Who is masked
Participant, Investigator, Outcomes assessor
Enrolment
80 participants (estimated)
IDs, dates and publications
ClinicalTrials.gov ID
NCT07346989
Sponsor's protocol ID
2025-FIS-4007899
Acronym
NeuroFit
Status last verified
Jun 2026
First submitted
3 Dec 2025
Last updated
6 Jul 2026
Results posted
No
Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
No
Individual data sharing
Undecided: IPD will be shared under request to the authors

Publications

  • Molla-Casanova S, Page A, Lopez-Pascual J, Ingles M, Sempere-Rubio N, Aguilar-Rodriguez M, Munoz-Gomez E, Serra-Ano P. Effects of mirror neuron activation therapies on functionality in older adults: Systematic review and meta-analysis. Geriatr Nurs. 2024 Mar-Apr;56:115-123. doi: 10.1016/j.gerinurse.2024.02.006. Epub 2024 Feb 11.

    PubMed 38346365
  • Global Recommendations on Physical Activity for Health. Geneva: World Health Organization; 2010. Available from http://www.ncbi.nlm.nih.gov/books/NBK305057/

    PubMed 26180873
  • Fried LP, Tangen CM, Walston J, Newman AB, Hirsch C, Gottdiener J, Seeman T, Tracy R, Kop WJ, Burke G, McBurnie MA; Cardiovascular Health Study Collaborative Research Group. Frailty in older adults: evidence for a phenotype. J Gerontol A Biol Sci Med Sci. 2001 Mar;56(3):M146-56. doi: 10.1093/gerona/56.3.m146.

    PubMed 11253156
  • Serra-Ano P, Munoz-Gomez E, Molla-Casanova S, Moreno-Segura N, Gonzalez-Pons H, Ingles M. Non-invasive brain stimulation on functional capacity in prefrail older adults: a protocol for a randomised clinical trial. Front Aging Neurosci. 2026 Aug 12;18:1891571. doi: 10.3389/fnagi.2026.1891571. eCollection 2026.

    PubMed 42656613

Questions about this trial

What is this clinical trial studying?

A study testing tDCS and Virtual running in people with Prefrail Elderly, run by University of Valencia at 1 site in Spain.

The full registered description is in the About this study section and the official record.

Who may be eligible to take part?

The sponsor lists 4 inclusion and 14 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.

Is this clinical trial currently recruiting?

The record says: looking for participants now, as of the sponsor's last update on 6 Jul 2026. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 1 site in Spain. Whether a site is taking part right now should be confirmed with that site. See every site.

What are the possible benefits and risks?

They depend on the study and the treatment, and no study can promise a benefit. Some participants in this study may receive a placebo. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.

Are results available for this study?

This study is still under way. Results are not available in the source record yet.

How can a doctor refer a patient or contact the research team?

Contact Marta Inglés de la Torre, PHD (0034963864003, marta.ingles@uv.es), or a site near the patient. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

Frailty Condition (time frame: Five assessments: Baseline (T1); After the first session, at Day 1 (T2); Mid-term assessment, 4 weeks after the intervention starts (T3); After the intervention, 8 weeks (T4); Four weeks after the end of the intervention (follow-up assessment) (T5).). The study lists 2 primary outcomes in all. It is what the study was designed to measure, not a finding.

Where can I read the original study information?

On the ClinicalTrials.gov record for NCT07346989, which also lists 4 linked publications.

Does a listing mean the treatment is approved or proven to work?

No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.

How often is this information updated?

AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 6 Jul 2026.

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