Trial record 1 of 1 for:    Speed of Processing Modes to Prevent Cognitive Decline in Older Adults
Previous Study | Return to List | Next Study

Iowa Healthy and Active Minds Study (IHAMS)

This study has been completed.
Sponsor:
Collaborator:
Information provided by (Responsible Party):
Fredric D Wolinsky, University of Iowa
ClinicalTrials.gov Identifier:
NCT01165463
First received: July 13, 2010
Last updated: January 29, 2014
Last verified: January 2014
  Purpose

This is second-generation study based on results from ACTIVE (Advanced Cognitive Training for Independent and Vital Elderly). This four-arm study is known as IHAMS (the Iowa Healthy and Active Minds Study). The investigators will formally test from an intent-to-treat perspective for differences on the primary and secondary outcomes based on whether participants were randomized to the basic on-site speed of processing training (SOPT) group (G1), to the on-site basic SOPT plus subsequent booster-training group (G2), to the basic at-home SOPT group (G3), or to the basic attention-control group (G4). Basic training involves 10 hours of either the SOPT or attention-control training during the first 6 weeks of participation. Booster-training involves 4 additional hours of SOPT training at 11 months of participation.


Condition Intervention
Visual Processing Speed
Behavioral: SOPT basic training
Behavioral: Crossword Puzzles
Behavioral: SOPT booster training

Study Type: Interventional
Study Design: Allocation: Randomized
Endpoint Classification: Efficacy Study
Intervention Model: Parallel Assignment
Masking: Single Blind (Investigator)
Primary Purpose: Prevention
Official Title: RCT of Two Speed of Processing Modes to Prevent Cognitive Decline in Older Adults

Further study details as provided by University of Iowa:

Primary Outcome Measures:
  • Useful Field of View Test [ Time Frame: 12 months ] [ Designated as safety issue: No ]
    The Useful Field of View (UFOV) is a computer-administered test of functional vision and visual attention. UFOV consists of three subtests which assess speed of visual processing under increasingly complex task demands. The examinee must detect, identify, and localize briefly presented targets.


Secondary Outcome Measures:
  • Digit Vigilance Test [ Time Frame: 12 months ] [ Designated as safety issue: No ]
    Subject crosses out all 6's on an 8 x 11.5 page of random numbers while being timed.

  • Symbol Digit Modalities Test [ Time Frame: 12 Months ] [ Designated as safety issue: No ]
    Subject matches a number to a symbol corresponding to a key on the top of the page. They are timed and allowed 90 to complete.

  • Controlled Oral Word Association Test [ Time Frame: 12 Months ] [ Designated as safety issue: No ]
    Subject states all the ordinary words they can think of that start with the letter C while being timed for 60 seconds. They repeat this task with the letters F and L.

  • Comprehensive Trail Making Test [ Time Frame: 12 Months ] [ Designated as safety issue: No ]
    Both parts of the Trail Making Test consist of 25 circles distributed over a sheet of paper. In Part A, the circles are numbered 1 - 25, and the patient should draw lines to connect the numbers in ascending order. In Part B, the circles include both numbers (1 - 13) and letters (A - L); as in Part A, the patient draws lines to connect the circles in an ascending pattern, but with the added task of alternating between the numbers and letters (i.e., 1-A-2-B-3-C, etc.) They are timed until completion.

  • Stroop [ Time Frame: 12 months ] [ Designated as safety issue: No ]
    Subject must read aloud. Part A- Read the words on the page, Part B - Read the colors on the page, and Part C - Say the color of the ink the words are printed in. Each part is timed giving subject 45 seconds per part.


Enrollment: 681
Study Start Date: September 2009
Study Completion Date: March 2012
Primary Completion Date: December 2011 (Final data collection date for primary outcome measure)
Arms Assigned Interventions
Experimental: Clinic-based SOPT basic training
Clinic-based SOPT basic training for 10 hours.
Behavioral: SOPT basic training
10 hours of basic training
Experimental: Home-based SOPT basic training
Home-based SOPT basic training for 10 hours.
Behavioral: SOPT basic training
10 hours of basic training
Active Comparator: Crossword Puzzles Training
Crossword puzzles training for 10 hours in our lab.
Behavioral: Crossword Puzzles
Subjects train with puzzles 10 hrs in lab.
Experimental: SOPT basic and SOPT booster-training
Clinic-based SOPT basic training and SOPT booster training.
Behavioral: SOPT basic training
10 hours of basic training
Behavioral: SOPT booster training
4 hours of subsequent booster-training

Detailed Description:

In this study, our specific aims are to conduct a randomized controlled trial (RCT) with one-year follow-up that can be fully completed within the NIH Challenge Grant two-year period. The goal of the RCT is to improve cognitive performance among older adults to enhance their quality of life now and into the future. We will randomize 600 participants to four treatment arms separately within two age strata (50-64, and 65 and older).

The four groups include: G1, basic on-site SOPT; G2, on-site basic SOPT plus subsequent booster-training group; G3, basic at-home SOPT; or G4, basic attention-control group. Basic training involves 10 hours of either the SOPT or attention-control training during the first 6 weeks of participation. Booster-training involves 4 additional hours of SOPT training at 11 months of participation.

Our primary outcome measure is speed of processing, and we will use several reliable and valid instruments to provide a multidimensional assessment, including the Useful Field of View Test, the Symbol Digit Modalities Test, the Trail Making Test, the Controlled Oral Word Association Test, the Digit Vigilance Test, and the Stroop Color and Word Test.

There are seven key hypotheses (Hn). H1 involves a replication of ACTIVE (i.e., on-site SOPT delivery, with or without booster-training) in which groups G1 and G2 are combined vs. the attention control group and hypothesizes statistically significant evidence to support the benefit of being assigned to on-site training vs. the attention control group.

H2 and H3 are designed to separate the basic training effect (H2) from the basic plus booster-training effect (H3) among the on-site delivery groups (G1 and G2) vs. the attention control group (G4), and hypothesizes benefits of SOPT training vs. attention control regardless of booster-training.

H4 represents the test of the at-home delivery of SOPT training (G3) vs. the attention control group (G4). H4 hypothesizes that there will be statistically significant evidence indicating the benefit of being assigned to G3 (at-home training) vs. the attention control group (G4).

H5 and H6 evaluate the different modes of implementing the speed of processing intervention. H5 represents a head-to-head comparison of the basic on-site delivery vs. the at-home delivery of the SOPT intervention. H5 hypothesizes that the effect of at-home SOPT training (G3) will be greater than the effect of on-site SOPT training (G1).

H6 represents a head-to-head comparison of the on-site basic plus booster SOPT training (G2) vs. the at-home delivery of the SOPT intervention. H6 hypothesizes that the effect for at-home SOPT (G3) will be larger than that for the on-site SOPT with booster-training group (G2).

Finally, H7 represents the head-to-head test of on-site basic SOPT (G1) to on-site basic plus booster training SOPT group (G2) . H7 hypothesizes that the difference between the two will reflect the value of booster training.

The investigators will replicate all of the above analyses within each age strata (50-64 vs. > 65) and compare effect sizes across strata.

  Eligibility

Ages Eligible for Study:   50 Years and older
Genders Eligible for Study:   Both
Accepts Healthy Volunteers:   Yes
Criteria

Inclusion Criteria:

  • 50 years of age or older
  • Patient of the FCC in Family Medicine or General Internal Medicine Clinic at UIHC
  • No known memory problems

Exclusion Criteria:

  • Significant vision impairments
  • Lack of access to a computer or owns a MAC
  • Lives more than 37 miles from the lab
  • Traumatic Brain Injury or severe stroke
  Contacts and Locations
Please refer to this study by its ClinicalTrials.gov identifier: NCT01165463

Locations
United States, Iowa
University of Iowa
Iowa City, Iowa, United States, 52242
Sponsors and Collaborators
University of Iowa
Investigators
Principal Investigator: Fredric D Wolinksy, Ph.D. University of Iowa