Pain and Split-belt Motor Learning in Older Adults

NCT ID: NCT07054840

Last Updated: 2025-12-04

Basic Information

• Recruitment Status: RECRUITING
• Clinical Phase: NA
• Total Enrollment: 34 participants
• Study Classification: INTERVENTIONAL
• Study Start Date: 2025-08-26
• Study Completion Date: 2026-05-31

Brief Summary

The purpose of this research is to investigate the impact of acute pain, induced using an experimental pain paradigm of capsaicin paired with heat, on implicit locomotor learning and its retention in older adults.

Conditions

Aging; Older Adults; Pain; Motor Learning

Study Design

• Allocation Method: RANDOMIZED
• Intervention Model: PARALLEL
• Primary Study Purpose: BASIC_SCIENCE
• Blinding Strategy: NONE

Study Groups

No Pain

Will receive no intervention.

Group Type: NO_INTERVENTION

No interventions assigned to this group

Pain

Will receive capsaicin and heat combined to induce acute pain.

Group Type: EXPERIMENTAL

Capsaicin 0.1% cream combined with a heat pack and applied to the lower leg

Intervention Type: BEHAVIORAL

Capsaicin is applied to the skin of one of the lower legs, then covered with a heat pack that is secured to the leg with self-adhesive wrap.

Interventions

Capsaicin 0.1% cream combined with a heat pack and applied to the lower leg

Capsaicin is applied to the skin of one of the lower legs, then covered with a heat pack that is secured to the leg with self-adhesive wrap.

Intervention Type: BEHAVIORAL

Eligibility Criteria

Inclusion Criteria

• Age 55-90 years old
• Self-identifying as generally medically healthy
• Able to read, write and speak English
• Able to provide informed consent and attend all testing sessions
• Willing to undergo the experimental pain paradigm, if selected

Exclusion Criteria

• Resting heart rate < 50 or > 100 bpm
• Resting blood pressure < 90/60 or > 165/95
• Any history or current mental health condition, learning/developmental disability or cognitive impairment, including severe untreated ADD/ADHD, severe untreated anxiety, severe untreated depression, autism spectrum disorder, insomnia, mild cognitive impairment, etc. (Mild to moderate treated ADD/ADHD, anxiety, and/or depression are allowed.)
• Score on the Montreal Cognitive Assessment (MoCA) <23
• Score on the Generalized Anxiety Disorder-7 Scale ≥ 10
• Score on the Patient Health Questionnaire-2 ≥ 2 and score on the Patient Health Questionnaire-9 ≥ 10
• Any current (within last 3 month) or chronic medical conditions, including any musculoskeletal, cardiovascular, pulmonary, metabolic, psychiatric or neurological diagnosis that affects activities of daily living or would confound testing or place the subject at risk by participating, such as a significant cardiovascular condition or event (e.g., heart attack < 3 months ago, uncontrolled atrial fibrillation, uncontrolled angina, congestive heart failure, chronic obstructive pulmonary disorder, or peripheral vascular disease)
• Any impaired sensation or weakness in either lower extremity
• History of serious concussion or head injury, defined as a loss of consciousness for > 5 minutes and/or requiring medical treatment, or > 2 concussions over the lifespan
• Any history of acute or chronic problems with balance, any dizziness, or > 1 fall in the last 12 months
• Currently or regularly using any analgesic medications, over-the-counter remedies, or any other treatment for the purposes of pain relief (i.e., baby aspirin for heart health is allowed)
• Any current or chronic pain condition during the last year, located anywhere in the body with an intensity of > 2/10
• Allergy to capsaicin or hot peppers
• Any skin lesion, breakage or irritation in the area targeted for the painful stimulus
• Significant skin sensitivity to soaps/creams/perfumes or to heat
• Poor circulation in the area targeted for the painful stimulus
• Prior participation in a split-belt locomotor learning study in the Neuromotor Behavior Lab in the past 2 years

• Minimum Eligible Age: 55 Years
• Maximum Eligible Age: 90 Years
• Eligible Sex: ALL
• Accepts Healthy Volunteers: No

Sponsors

University of Delaware

OTHER

Sponsor Role: lead

Responsible Party

Responsibility Role: SPONSOR

Principal Investigators

Susanne Morton

Role: PRINCIPAL_INVESTIGATOR

University of Delaware

Locations

Health Sciences Complex

Newark, Delaware, United States

Site Status: RECRUITING

Countries

United States

Central Contacts

Ashley Fath

Role: CONTACT

RNP-Lab@udel.edu

302-283-9936

Facility Contacts

Ashley Fath

Role: primary

RNP-Lab@udel.edu

302-283-9936

Other Identifiers

2334309

Identifier Type: -

Identifier Source: org_study_id