Analysis Of The Effect Of A Fine Manual Skills Intervention In A Specific Context On The Linguistic Processing of Healthy Young Adults

This is a randomized, single-blind clinical trial that will include healthy individuals between the ages of 19 and 24. Participants with previously diagnosed neurological and/or psychiatric disorders, a history of traumatic brain injury, use of psychoactive substances or medications that may affect cognition, and pregnant women or women suspected of being pregnant will be excluded. The sample will be a convenience sample, with participants randomly allocated to intervention and control groups (1:1), and the sample size calculation will be based on a pilot study. Participants will be assessed at two different time points, before and after the intervention, for fine manual dexterity and syntactic language processing. The intervention group will undergo fine manual dexterity training in a specific context, while the control group will undergo an intervention with a less complex task and without a specific context. Both protocols will consist of 20-minute sessions, held five times a week over two weeks, in a synchronous online format, via the Google Meet videoconferencing platform.

Study Overview

• Status: Recruiting
• Conditions: Healthy Participants
• Intervention / Treatment: Behavioral: Context-Specific Fine Motor Skills Training; Behavioral: Fine Motor Skills Training

• Study Type: Interventional
• Enrollment (Estimated): 40
• Phase: Not Applicable

Contacts and Locations

• Study Contact: Name: Aline Pagnussat; Phone Number: 555133038912; Email: alinesp@ufcspa.edu.br

Study Locations

• Brazil
  • Rio Grande do Sul
    • Porto Alegre, Rio Grande do Sul, Brazil, 90050-170
      • Not yet recruiting
      • Federal University of Health Sciences of Porto Alegre
      • Contact: Aline Pagnussat; Phone Number: 555133038912; Email: alinesp@ufcspa.edu.br
    • Porto Alegre, Rio Grande do Sul, Brazil, 90050170
      • Recruiting
      • UFCSPA
      • Contact: Aline Pagnussat, Professor; Phone Number: +555133038912; Email: alinesp@ufcspa.edu.br

Participation Criteria

Eligibility Criteria

• Ages Eligible for Study: Adult
• Accepts Healthy Volunteers: Yes

Description

Inclusion Criteria:

• Right-handed young people between 19 and 24 years old;
• Accept participation in the study and sign the free and informed consent form.

Exclusion Criteria:

• Presence of previously diagnosed neurological and/or psychiatric disorders;
• History of traumatic brain injuries;
• Pregnant women or women suspected of being pregnant.

Study Plan

How is the study designed?

Design Details

• Primary Purpose: Treatment
• Allocation: Randomized
• Interventional Model: Parallel Assignment
• Masking: Single

Number of Arms

2

Arms and Interventions

Participant Group / Arm	Intervention / Treatment
Experimental: Context-Specific Fine Motor Skills Training	Behavioral: Context-Specific Fine Motor Skills Training; The intervention for the "Context-Specific Fine Motor Skills Training" group will consist of practicing fine manual dexterity in a task-oriented context, characterized by clear and functional objectives. The activity will begin with solving mathematical calculations, the results of which will range from 1 to 4, each associated with a specific color of bead. Using tweezers, the participant must select the bead corresponding to the result obtained, apply glue, and fill the indicated space of the mandala. The intervention will be carried out for 20 minutes per day, five times a week, over the course of two weeks.
Active Comparator: Fine Motor Skills Training	Behavioral: Fine Motor Skills Training; The "Fine Motor Skills Training" group will undergo an intervention with a less complex task. Participants will complete the mandala using only their hands to manipulate the beads. The duration and frequency protocol will be identical to that of the experimental group, with 20-minute sessions, five times a week, over two weeks.

What is the study measuring?

Primary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Syntactic production	Participants described a pleasant autobiographical event and the "Picnic Scene" from the Western Aphasia Battery.	Baseline (2 to 3 days before the beginning of intervention) and post-intervention (2 weeks after the beginning of intervention, and 1 day after the last day of intervention)

Secondary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Fine motor dexterity	The fine motor dexterity will be evaluated through the Grooved Pegboard Test. The test consists of picking a pine and putting it in the pegboard in a correct sequence. The pegboard had 25 holes, and the score is measured in how much time the participant spends completing the pegboard.	Baseline (2 to 3 days before the beginning of intervention) and post-intervention (2 weeks after the beginning of intervention, and 1 day after the last day of intervention)

Collaborators and Investigators

• Sponsor: Federal University of Health Science of Porto Alegre

Study record dates

Study Major Dates

• Study Start (Actual): November 13, 2025
• Primary Completion (Actual): December 31, 2025
• Study Completion (Estimated): December 31, 2026

Study Registration Dates

• First Submitted: September 12, 2025
• First Submitted That Met QC Criteria: November 15, 2025
• First Posted (Actual): November 18, 2025

Study Record Updates

• Last Update Posted (Actual): April 9, 2026
• Last Update Submitted That Met QC Criteria: April 8, 2026
• Last Verified: April 1, 2026

More Information

Terms related to this study

• Other Study ID Numbers: Mandala

Plan for Individual participant data (IPD)

• Plan to Share Individual Participant Data (IPD)?: UNDECIDED

Drug and device information, study documents

• Studies a U.S. FDA-regulated drug product: No
• Studies a U.S. FDA-regulated device product: No