Cognitive Training in Parkinson's Disease, the iPARK Study
NCT03680170, Not applicable, Unknown, Umeå University
Trial 10
As registered on ClinicalTrials.gov, in the graph's capture of the registry.
| Field | Value | Source |
|---|---|---|
| Title | Cognitive Training in Parkinson's Disease, the iPARK Study | ClinicalTrials.gov |
| NCT number | NCT03680170 | ClinicalTrials.gov |
| Status | Unknown | ClinicalTrials.gov |
| Phases | Not applicable | ClinicalTrials.gov |
| Enrollment | 80 participants, estimated | ClinicalTrials.gov |
| Lead sponsor | Umeå University | ClinicalTrials.gov |
| Conditions | Parkinson Disease, Cognitive Impairment | ClinicalTrials.gov |
| Interventions | Working memory updating training, Placebo training | ClinicalTrials.gov |
| First posted | 2018-09-21 | ClinicalTrials.gov |
| Last updated | 2021-06-22 | ClinicalTrials.gov |
Registered outcomes 52
Each outcome the trial registered, primary first, in ClinicalTrials.gov's words.
| List | Outcome | Time frame | Description | Source |
|---|---|---|---|---|
| Primary | Criterion task | 6-8 weeks (pretest-posttest 1) | Improvement on Letter memory after 30 sessions of working memory training. total score:0-40 higher score indicate better performance total items:0-10 higher score indicate better performance | ClinicalTrials.gov |
| Primary | Criterion task | 16 weeks (posttest 1-posttest 2) | Maintenance of Letter memory performance four months after completed working memory training. total score:0-40 higher score indicate better performance total items:0-10 higher score indicate better performance | ClinicalTrials.gov |
| Secondary | Transfer task n-back | 6-8 weeks (pretest-posttest 1) | Improvement on updating performance measured by n-back (1,2 and 3 back) after 30 sessions of working memory training. 1. back total score: 0-90 higher score indicate better performance 2. back total score: 0-90 higher score indicate better performance 3. back total score: 0-90 higher score indicate better performance 1 back, Yes minus false alarms: 0-36 higher score indicate better performance 2 back, Yes minus false alarms: 0-36 higher score indicate better performance 3 back, Yes minus false alarms: 0-36 higher score indicate better performance | ClinicalTrials.gov |
| Secondary | Transfer task n-back | 16 weeks (posttest 1-posttest 2) | Maintenance of updating performance measured by n-back (1,2 and 3 back) four months after completed working memory training. 1. back total score: 0-90 higher score indicate better performance 2. back total score: 0-90 higher score indicate better performance 3. back total score: 0-90 higher score indicate better performance 1 back, Yes minus false alarms: 0-36 higher score indicate better performance 2 back, Yes minus false alarms: 0-36 higher score indicate better performance 3 back, Yes minus false alarms: 0-36 higher score indicate better performance | ClinicalTrials.gov |
| Secondary | Transfer task digit memory running span | 6-8 weeks (pretest-posttest 1) | Improvement on updating performance measured by digit memory running span after 30 sessions of working memory training. total score:0-40 higher score indicate better performance total items:0-10 higher score indicate better performance | ClinicalTrials.gov |
| Secondary | Transfer task digit memory running span | 16 weeks (posttest 1-posttest 2) | Maintenance of updating performance measured by digit memory running span four months after completed working memory training. total score:0-40 higher score indicate better performance total items:0-10 higher score indicate better performance | ClinicalTrials.gov |
| Secondary | Updating total score | 6-8 weeks (pretest-posttest 1) | Improvement in calculated composite score based on z-score((raw test score-mean of group)/standard deviation of group) for digit memory running span, 2-back and 3-back. Range -4 to 4. Higher z-score indicate better updating performance. (z score(3back yes-false alarms)+z score(2back yes-false alarms)+z score (digit memory running span total))/3 | ClinicalTrials.gov |
| Secondary | Updating total score | 16 weeks (posttest 1-posttest 2) | Maintenance of calculated composite score based on z-score((raw test score-mean of group)/standard deviation of group) for digit memory running span, 2-back and 3-back. Range -4 to 4. Higher z-score indicate better updating performance. (z score(3back yes-false alarms)+z score(2back yes-false alarms)+z score (digit memory running span total))/3 | ClinicalTrials.gov |
| Secondary | Transfer task episodic memory | 6-8 weeks (pretest-posttest 1) | Improvement on episodic memory performance measured by Buschke Selective Reminding Procedure after 30 sessions of working memory training. total score: 0-74 higher score indicate better performance list learning: 0-74 delayed score:0-18 higher score indicate better performance | ClinicalTrials.gov |
| Secondary | Transfer task episodic memory | 16 weeks (posttest 1-posttest 2) | Maintenance of on episodic memory performance measured by Buschke Selective Reminding Procedure four months after completed working memory training. total score: 0-74 higher score indicate better performance list learning: 0-74 higher score indicate better performance delayed score:0-18 higher score indicate better performance | ClinicalTrials.gov |
| Secondary | Transfer task digit span | 6-8 weeks (pretest-posttest 1) | Improvement on working memory performance measured by Digit span forward, backwards and sequencing (WAIS IV) after 30 sessions of working memory training. digit span forward total score: 0-16 higher score indicate better performance digit span backwards total score: 0-16 higher score indicate better performance digit span sequencing total score:0-16 higher score indicate better performance | ClinicalTrials.gov |
| Secondary | Transfer task digit span | 16 weeks (posttest 1-posttest 2) | Maintenance of working memory performance measured by Digit span forward, backwards and sequencing (WAIS IV) after 30 sessions of working memory training. digit span forward total score: 0-16 higher score indicate better performance digit span backwards total score: 0-16 higher score indicate better performance digit span sequencing total score:0-16 higher score indicate better performance | ClinicalTrials.gov |
| Secondary | Transfer task visuospatial-span | 6-8 weeks (pretest-posttest 1) | Maintenance of visuospatial working memory performance measured by visuospatial span task, 0-18 higher score indicate better performance | ClinicalTrials.gov |
| Secondary | Transfer task visuospatial-span | 16 weeks (posttest 1-posttest 2) | Maintenance of visuospatial working memory performance measured by visuospatial span task, total score 0-18 higher score indicate better performance | ClinicalTrials.gov |
| Secondary | working memory total score | 6-8 weeks (pretest-posttest 1) | Improvement in calculated composite score based on z-score((raw test score-mean of group)/standard deviation of group) from digit span forward, digit span backward, digit span sequencing and visuospatial span task, higher score indicate better performance Range -4 to 4. (z score(digit span forward)+z score(digit span backward)+z score (digit span sequencing)+z score (visuospatial span task))/4 | ClinicalTrials.gov |
| Secondary | working memory total score | 16 weeks (posttest 1-posttest 2) | Maintenance in calculated composite score based on z-score((raw test score-mean of group)/standard deviation of group) from digit span forward, digit span backward, digit span sequencing and visuospatial span task, higher score indicate better performance. Range -4 to 4. (z score(digit span forward)+z score(digit span backward)+z score (digit span sequencing)+z score (visuospatial span task))/4 | ClinicalTrials.gov |
| Secondary | Transfer task Matrices (WAIS IV) | 6-8 weeks (pretest-posttest 1) | Improvement on problem solving performance measured by Matrices (WAIS IV) after 30 sessions of working memory training. total score: 0-26, higher score indicate better performance | ClinicalTrials.gov |
| Secondary | Transfer task Matrices (WAIS IV) | 16 weeks (posttest 1-posttest 2) | Maintenance of problem solving performance measured by Matrices (WAIS IV) after 30 sessions of working memory training. total score: 0-26, higher score indicate better performance | ClinicalTrials.gov |
| Secondary | Transfer task Digit symbol | 6-8 weeks (pretest-posttest 1) | Improvement on mental and psychomotor speed measured by Digit symbol after 30 sessions of working memory training. total score: 0-135, higher score indicate better performance | ClinicalTrials.gov |
| Secondary | Transfer task Digit symbol | 16 weeks (posttest 1-posttest 2) | Maintenance of mental and psychomotor speed measured by Digit symbol four months after completed working memory training. total score: 0-135, higher score indicate better performance | ClinicalTrials.gov |
Outcomes 0
Each outcome the trial posted results for, in ClinicalTrials.gov's words.
| Type | Outcome | Time frame | Population | Units | Measured as | Source |
|---|
Results by group 0
Each measurement the trial posted, group by group, in the words and numbers it posted.
| Outcome | Group | Category | Value | Spread | Units | Source |
|---|
Participant flow 0
How many started, completed or left each group, period by period.
| Period | Milestone | Group | Participants | Units counted | Source |
|---|
Adverse events 0
Each adverse event the trial posted, group by group: the participants affected out of those at risk.
| Type | Event | Organ system | Group | Affected | At risk | Events | Source |
|---|
Adverse event totals 0
The totals the trial posted for each group.
| Total | Group | Affected | At risk | Source |
|---|
Papers 24
The papers the trial lists on ClinicalTrials.gov.
| PMID | Listed as | Source |
|---|---|---|
| 12023324 | BACKGROUND | PubMed |
| 16713924 | BACKGROUND | PubMed |
| 17227183 | BACKGROUND | PubMed |
| 18550595 | BACKGROUND | PubMed |
| 18556560 | BACKGROUND | PubMed |
| 19140643 | BACKGROUND | PubMed |
| 19538208 | BACKGROUND | PubMed |
| 19733364 | BACKGROUND | PubMed |
| 20230116 | BACKGROUND | PubMed |
| 20382919 | BACKGROUND | PubMed |
| 20630350 | BACKGROUND | PubMed |
| 20880750 | BACKGROUND | PubMed |
| 21327348 | BACKGROUND | PubMed |
| 21817043 | BACKGROUND | PubMed |
| 22021174 | BACKGROUND | PubMed |
| 22409508 | BACKGROUND | PubMed |
| 22742929 | BACKGROUND | PubMed |
| 24363137 | BACKGROUND | PubMed |
| 26519540 | BACKGROUND | PubMed |
| 27688923 | BACKGROUND | PubMed |
Grants 0
The grants NIH RePORTER links to the trial, newest funded first: NIH's, and some of AHRQ's, CDC's, FDA's and VA's. Each shows its title, principal investigators, organization and funder in its newest year.
| Project | Title | Principal investigators | Organization | Funder | Fiscal years | Source |
|---|
Trial comparisons 0
Comparisons of the trial's two groups, calculated by ConductScience from the counts it posted.
| Comparison | Source |
|---|
Tests 8
The ConductCognition tests this trial's registered outcomes name, as ScienceGraph matched them in trial-tests-2026-11-12-0.2.1.
| Test | Named as | Source |
|---|---|---|
| 1-Back Task | Secondary outcome | ConductCognition |
| 2-Back Task | Secondary outcome | ConductCognition |
| Balloon Risk | Other outcome | ConductCognition |
| Digit Span Test | Secondary outcome | ConductCognition |
| Running Span | Secondary outcome | ConductCognition |
| Stroop Color-Word Test | Secondary outcome | ConductCognition |
| Trail Making Test A | Secondary outcome | ConductCognition |
| Trail Making Test B | Secondary outcome | ConductCognition |
Source 5
| Field | Value | Source |
|---|---|---|
| Release | trials-2026-11-12-0.4.0 | ClinicalTrials.gov |
| Release manifest SHA-256 | 0f4a8d8c48aee2a7573ae0fa94ecbeab70c1adbe449bbc95c424bc7d3e97b9d4 | ClinicalTrials.gov |
| Registry capture | 2026-11-12 | ClinicalTrials.gov |
| Results copy, AACT | 2026-03-23 | ClinicalTrials.gov |
| NIH clinical studies file | 2026-11-13 | ClinicalTrials.gov |
Release trials-2026-11-12-0.4.0
ClinicalTrials.gov's posted results, through CTTI's AACT: ClinicalTrials.gov data via Aggregate Analysis of ClinicalTrials.gov (AACT), CTTI. CTTI makes its materials freely available and requests acknowledgement. https://aact.ctti-clinicaltrials.org/documentation/299 ClinicalTrials.gov's data carry an international copyright outside the United States: https://clinicaltrials.gov/about-site/terms-conditions.
ClinicalTrials.gov: none stated ClinicalTrials.gov's data carry an international copyright outside the United States: https://clinicaltrials.gov/about-site/terms-conditions.
NIH RePORTER's clinical studies and project files: Public domain (NIH RePORTER)