Feasibility, Usability and Acceptance of a Newly Developed Exergame-Based Traininng Concept for Older Adults With Mild Neurocognitive Disorder - A Pilot Randomized Controlled Trial
Overview
- Phase
- Not Applicable
- Intervention
- Not specified
- Conditions
- Mild Neurocognitive Disorder
- Sponsor
- Eling DeBruin
- Enrollment
- 18
- Locations
- 1
- Primary Endpoint
- Feasibility - recruitment (absolute)
- Status
- Completed
- Last Updated
- 2 years ago
Overview
Brief Summary
The primary objective of this pilot study is to evaluate the feasibility (i.e. recruitment, adherence, compliance, attrition), usability (i.e. system usability), and acceptance (i.e. enjoyment, training motivation and perceived usefulness) of a newly developed exergame-based intervention concept for older adults with mNCD. As a secondary objective, preliminary effects of the intervention on cognition, brain resting-state functional connectivity, gait, cardiac autonomic regulation, and psychosocial factors (i.e. quality of life, and levels of depression, anxiety, and stress) will be explored. This allows to synthesize data for a sample size calculation on basis of a formal power calculation for a future RCT.
A two-arm, parallel-group, single-blinded (i.e. outcome evaluator of pre- and post-measurements blinded to group allocation) pilot randomized controlled study with an allocation ration of 2 : 1 (i.e. intervention : control) including 17 - 25 older adults with mNCD will be conducted between June and December 2021. The active control group will proceed with usual care as provided by the memory clinics where the patients are recruited. The intervention group will perform a twelve-week training intervention according to a newly developed exergame-based intervention concept in addition to usual care. Primary outcomes will be assessed throughout the training intervention period. The measurements of all secondary outcomes will be conducted at ETH Hönggerberg within two weeks prior to starting (PRE) and after completing (POST) the study intervention.
Detailed Description
After recruitment, interested subjects will be screened on eligibility between July and September 2021. All potential subjects will be fully informed about the study procedures by providing verbal explanations and an information sheet. Expected effects, benefits and risks of the study will be explained by the investigator, who will also be available to answer open questions and clarify uncertainties of participants. It will further be verified, that withdrawal is permitted at any time during the study without giving any reason. After sufficient time for considerations, suitable patients willing to take part in the study will provide written informed consent prior to any measurements and the first study appointment will be scheduled. At the first scheduled appointment, pre-measurements (PRE) will be performed. Thereafter, participants will be randomly allocated to the intervention group (i.e. 'exergame group') or active control group (i.e. 'usual care'). Subsequently, participants in the exergame group will be familiarized with the exergame training system 'Dividat Senso' (Dividat AG, Schindellegi, Switzerland; CE certification), and the study intervention will be started according to the newly developed exergame-based intervention concept. After completing the twelve-week training intervention, post-measurements (POST) will be performed for both groups. Both, the pre- and the post-measurements will take place and within two weeks prior to starting or after completing the intervention. INTERVENTIONS: Usual Care: An active control group will proceed with usual care as provided by the memory clinics where the patients are recruited. Exergame Group: Participants will perform a twelve-week training intervention in addition to their usual care as provided by the memory clinics where the patients are recruited. The training intervention will be prescribed according to a newly developed exergame-based intervention concept. The training intervention concept was planned and reported using the Consensus on Exercise Reporting Template (CERT): It consists of an individually adapted multi-domain exergame-based simultaneous cognitive-motor training with incorporated cognitive tasks that will be adopted with a deficit-oriented focus on the neurocognitive domains of (1) learning and memory, (2) executive function, (3) complex attention, and (4) perceptual-motor function. According to the training concept, each participant is instructed to train 5x/week for 21 min per session resulting in a weekly exercise volume of 105 min. All training sessions are planned to take place at participant's homes using the exergame training system Dividat Senso (Dividat AG, Schindellegi, Switzerland; CE certification). In case the training cannot be performed at home, the training sessions will be performed at ETH Hönggerberg and the instructed training frequency is reduced to 3x/week for 21 min per session resulting in a weekly volume of 63 min. Nonetheless, it is still recommended to train at the suggested optimal frequency (5x/week) and volume (105 min/week). The training concepts is structured in three phases. It starts with a familiarization period of two weeks. During this phase, most of the training sessions (i.e. 4 out of 5 sessions) are supervised. After this initial guided familiarization period, supervision of training sessions is gradually reduced to 1x/week during a four-week transition phase. This transition phase aims to lead participants to being able to train independently. In this transition phase, the amount of supervision of training sessions is individually determined within a predefined range in accordance with the capabilities and preferences of the participants. From the 7th week until completion of the training intervention, semi-autonomous training with one supervised training session per week are prescribed for each participant. Throughout the training intervention period, all sessions will be prescribed following the same basic structure: Each session consists of three blocks with 3 phases per block. Phase 1 - Facilitation aims to apply a moderate physical intensity in the context of challenging but feasible cognitive and motoric demands mainly intending to trigger neurophysiological mechanisms, which promote neuroplasticity while additionally using cognitive stimulation to guide these neuroplastic processes. This phase includes games focusing on neurocognitive domains that are least impaired. The external task demand is individually adapted to ensure an appropriate internal training load. More specifically, the internal training load is subdivided into a fixed component (i.e. physical intensity) and a variable component (i.e. neurocognitive (game-) demand). An additional stepping task is used to set the level of physical intensity. It includes walking on the spot at a predefined stepping frequency that is needed to reach a moderate level of physical intensity (i.e. ranging between 40 and 59 % heart rate reserve (HRR))). The stepping frequency will be individually determined for each participant. A battery figure add-on is visible in the center of the screen that provides real-time visual feedback whether the predefined stepping frequency is reached. More specifically, if the predefined minimal required stepping frequency is reached or exceeded, the battery stays at equilibrium or fills. As long as the battery level is above 80 % (indicated by a line), the battery stays green. If the participants' stepping frequency falls below the predefined minimal required stepping frequency, the battery level decreases, and the battery turns orange (40 - 80 %) or red (below 40 %) indicating that the stepping frequency should be increased. On top of this fixed physical intensity, a variable amount of neurocognitive (game-) demands (e.g. game type, task complexity, predictability of required tasks) is applied. Since the physical intensity is kept constant, changes in the overall internal training load can mainly be attributed to these neurocognitive and motoric (game-) demands and, accordingly, the internal training load can be adjusted on basis of these game characteristics. Therefore, the neurocognitive demands of the exergame are individually adapted in order to ensure an appropriate total internal training load. The monitoring and adaption of the internal training load will be based on predefined progression rules for adapting characteristics of external training load. Phase 2 - Guidance aims to make use of the triggered neurophysiological mechanisms from phase 1 to specifically guide neuroplastic processes of the mainly impaired neurocognitive domain. Therefore, games focusing on the mainly impaired neurocognitive domain for the individual participant (e.g. amnestic single domain =\> learning and memory) are used. These games solely focus on cognitive and motoric demands, but not on physical exercise intensity. The cognitive-motoric demands of the exergame (also called 'external load') are individually adapted in order to ensure an appropriate internal training load. The monitoring and adaption of the internal training load will be based on predefined progression rules for adapting characteristics of external training load. Phase 3 - Coherence aims to implement a structured approach as a surrogate for the breaks between games. More specifically, resonance breathing training guided by heart rate variability biofeedback (HRVB) is used. HRVB training is a behavioral intervention aiming to increase cardiac autonomic control, to enhance homeostatic regulation, and to regulate emotional state. It includes paced breathing for two minutes following the rhythm of the individually predetermined resonance frequency visualized on the screen of the exergame device. The resonance frequency will be evaluated for each participant before starting the training intervention.
Investigators
Eling DeBruin
Prof. Dr.
Swiss Federal Institute of Technology
Eligibility Criteria
Inclusion Criteria
- •(Group 1 = mNCD) clinical diagnosis of 'Mild Neurocognitive Disorder' (mNCD) according to the International Classification of Diseases 11th Revision (ICD-XI) OR (Group 2 = sMCI) patients screened for mild cognitive impairment (sMCI) according to the following criteria: (a) informant (i.e. healthcare professionals)-based suspicion of MCI confirmed by (b) an objective screening of MCI based on the German Version of the Quick Mild Cognitive Impairment Screen with (b1) a recommended cut-off score for cognitive impairment (MCI or dementia) of \< 62/100, while (b2) not falling below the cut-off score for dementia (i.e. \< 45/100), while (c) activities of daily living remain intact.
- •fully vaccinated against coronavirus (SARS-CoV-2) with a Federal Office of Public Health (FOPH)-approved mRNA vaccine
- •German speaking
- •age ≥ 50 years
- •able to stand at least for 10 min without assistance
Exclusion Criteria
- •mobility impairments (i.e. gait, balance) that prevent experiment participation
- •presence of additional neurological disorders (i.e. epilepsy, stroke, multiple sclerosis, Parkinson's disease, brain tumors, or traumatic disorders of the nervous system)
- •presence of any other unstable or uncontrolled diseases
- •additional Covid-19 specific exclusion criteria (according to the Federal Office of Public Health):
- •high blood pressure (self-reported; systolic ≥ 140 mmHg and/or Diastolic ≥ 90 mmHg)
- •Chronic respiratory condition
- •Condition or therapy that weakens the immune system
- •Cardiovascular Disease
- •Cancer (present and/or under treatment)
- •Serious obesity (BMI ≥ 40 kg/m2)
Outcomes
Primary Outcomes
Feasibility - recruitment (absolute)
Time Frame: Through recruitment completion, an average of 12 weeks.
recruitment rate (absolute) \[\] = number of eligible participants recruited per month
Feasibility - adherence
Time Frame: Through recruitment completion, an average of 12 weeks.
adherence rate \[%\] = total number of training sessions attended / total number of training sessions offered
Feasibility - compliance
Time Frame: Through recruitment completion, an average of 12 weeks.
compliance rate \[%\] = total training duration attended \[min\] / total training duration offered \[min\]
Usability
Time Frame: System Usability is assessed in the Exergame Group at week 6 of the study intervention.
Usability will be assessed on basis of the validated German version of the System Usability Scale (SUS-DE). The SUS-DE is assessed in week 6 of the exergame-based intervention. It consists of ten items that are rated on a five-point Likert scale (i.e. ranging from 1 - "strongly disagree" to 5 - "strongly agree"). A total score will be calculated according to the scoring guidelines of the SUS. The total SUS score ranges between 0 and 100, whereas higher scores indicate better usability. A total SUS score of at least 70 will be considered an "acceptable" solution (i.e. 52 = ok, 73 = good, 85 = excellent, 100 = best imaginable).
Acceptance - enjoyment
Time Frame: Through recruitment completion, an average of 12 weeks.
Enjoyment of the exergame-based intervention concept will be assessed on basis of the Exergame Enjoyment Questionnaire (EEQ) that will be translated to German according to the guidelines for the process of cross-cultural adaptation of self-report measures. It consists of 20 statements corresponding to four categories of questions: (1) immersion, (2) intrinsically rewarding activity, (3) control, and (4) exercise. Each statement will be responded to on a five-point Likert scale (i.e. strongly disagree (1 point), disagree (2 points), neutral (3 points), agree (4 points), and strongly agree (5 points). The EEQ will be analyzed by calculating the average overall score as well as an average score for each category of questions.
Feasibility - recruitment (relative)
Time Frame: Through recruitment completion, an average of 12 weeks.
recruitment rate (relative) \[%\] = number of screened people / number of enrolled participants
Acceptance - motivation
Time Frame: Through recruitment completion, an average of 12 weeks.
The quality (of type) and quantity (of level) of training motivation will be assessed using of the German version of the Behavioral Regulation in Exercise Questionnaire-3 (BREQ-3) that is a widely used, valid and reliable measure of the continuum of motivation for exercise in different areas. It consists of 24 items assessing behavioral regulation in exercise contexts on a 5- point Likert scale ranging from 0 = 'not true for me' to 4 = 'very true for me'.
Feasibility - attrition
Time Frame: Through recruitment completion, an average of 12 weeks.
attrition rate = number of drop-outs / number of enrolled participants
Acceptance - perceived usefulness
Time Frame: Through recruitment completion, an average of 12 weeks.
Perceived usefulness will be evaluated on basis of patient-interviews, organized as semi-structured interviews along a predefined interview guide.
Secondary Outcomes
- Changes in Learning and Memory - Part 2(Both, the pre- and the post-measurements of secondary outcome measurements will take place and within two weeks prior to starting or after completing the intervention.)
- Changes in Complex Attention - Part 2(Both, the pre- and the post-measurements of secondary outcome measurements will take place and within two weeks prior to starting or after completing the intervention.)
- Changes in Complex Attention - Part 3(Both, the pre- and the post-measurements of secondary outcome measurements will take place and within two weeks prior to starting or after completing the intervention.)
- Changes in Psychosocial Factors - Part 2(Both, the pre- and the post-measurements of secondary outcome measurements will take place and within two weeks prior to starting or after completing the intervention.)
- Changes in Executive Function - Part 3(Both, the pre- and the post-measurements of secondary outcome measurements will take place and within two weeks prior to starting or after completing the intervention.)
- Changes in Brain Functional Connectivity(Both, the pre- and the post-measurements of secondary outcome measurements will take place and within two weeks prior to starting or after completing the intervention.)
- Changes in Learning and Memory - Part 1(Both, the pre- and the post-measurements of secondary outcome measurements will take place and within two weeks prior to starting or after completing the intervention.)
- Changes in Global Cognition(Both, the pre- and the post-measurements of secondary outcome measurements will take place and within two weeks prior to starting or after completing the intervention.)
- Changes in Complex Attention - Part 1(Both, the pre- and the post-measurements of secondary outcome measurements will take place and within two weeks prior to starting or after completing the intervention.)
- Changes in Executive Function - Part 1(Both, the pre- and the post-measurements of secondary outcome measurements will take place and within two weeks prior to starting or after completing the intervention.)
- Changes in Perceptual-Motor Function(Both, the pre- and the post-measurements of secondary outcome measurements will take place and within two weeks prior to starting or after completing the intervention.)
- Changes in Psychosocial Factors - Part 1(Both, the pre- and the post-measurements of secondary outcome measurements will take place and within two weeks prior to starting or after completing the intervention.)
- Changes in Executive Function - Part 2(Both, the pre- and the post-measurements of secondary outcome measurements will take place and within two weeks prior to starting or after completing the intervention.)
- Changes in Executive Function - Part 4(Both, the pre- and the post-measurements of secondary outcome measurements will take place and within two weeks prior to starting or after completing the intervention.)
- Changes in Spatiotemporal Gait Parameters(Both, the pre- and the post-measurements of secondary outcome measurements will take place and within two weeks prior to starting or after completing the intervention.)
- Changes in vagally-mediated Heart Rate Variability (HRV)(Both, the pre- and the post-measurements of secondary outcome measurements will take place and within two weeks prior to starting or after completing the intervention.)