Neural Substrates Underlying Adaptations in Manual Dexterity of Older Adults

ConditionAging Hands
Trial statusNot yet recruiting
Trial phaseNot applicable
Trial typeInterventional
Biological sexAll
Age54-89
SponsorUniversity of Colorado, Boulder

About this trial

Age-related declines in motor function can compromise independence and quality of life. This project examines how practice and somatosensory stimulation reshape the neural control of hand muscles in older adults, leveraging neuroplasticity to enhance dexterity. By identifying modifiable neural mechanisms that underlie improved motor performance, this research lays the groundwork for targeted, non-invasive interventions that can be translated into clinical and community settings to support healthy aging and functional independence.

Eligibility criteria

This trial accepts healthy volunteers

Qualifiers

None

Disqualifiers

None

Trial design

Design model

Sequential

Treatments tested in this trial

  • Transcutaneous electrical nerve stimulation (TENS)

    Behavioral

    Force-steadiness training will be performance either without (sham) or paired with TENS.

  • Familiarization

    Behavioral

    Participants will perform 25 trials of the Grooved Pegboard Test

Treatment groups

72 Participants
are divided into 2 treatment groups
Group A: Pegboard timeExperimental treatment 1 intervention
Group B: Force-steadiness practiceExperimental treatment 1 intervention

Trial outcomes

Primary outcomes

1

Grooved Pegboard Test

Time taken to insert 25 keyhole-shaped pegs into matching holes on the pegboard.

Time frame
From enrollment until the end of the study at 2 weeks.
2

Force steadiness

Coefficient of variation for force during low-intensity isometric contractions.

Time frame
From enrollment until the end of the study at 2 weeks.
3

Motor unit modes

The subsets of motor units in hand-forearm muscles that exhibit correlated modulation of discharge rate during low-intensity isometric contractions. The motor unit activity will be identified from high-density surface electromyography with grid electrodes.

Time frame
From enrollment until study completion at 2 weeks.

Secondary outcomes

Other outcomes

Sponsors and contacts

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This trial is not recruiting at the moment. You can still explore other options: