Training and Detraining Effects Associated with the D2 Mode B Assessment

Training and Detraining Effects Associated with the D2 Mode B Assessment

The purpose of this study is to examine the changes in performance on the Dynavision D2 Mode B Training assessment during a period of continuous training in addition to measuring how quickly performance is recovered following a period of detraining (no training).

This study will consist of 32 visits for a total of approximately 9 hours over 5-10 weeks. The first visit will consist of informed consent and eligibility questionnaires. The second visit will consist of anthropometrics (height, weight, and body composition), followed by familiarization with the training device. After this visit, you will have 15 training visits (Visits 3-15) using the Dynavision D2 Mode B Training assessment, followed by a period of no visits that could be from 1 week to 4 weeks, and then have 15 more identical re-training visits (visits 16-32). Each training and re-training visit will take approximately 15 minutes and will consist of two D2 Mode B Assessments and completion of a visual analog scale to assess alertness. Visits 3-15 and 16-32 must be separated by a minimum of 24 hours and no more than 72 hours.

Inclusion Qualifications:

  • Male or Female between the ages of 18-40 years old
  • Healthy as determined by the Par-Q+ and a Medical History Questionnaire
  • Are recreationally active (at least 150 minutes exercise per week)
  • Report Habitual caffeine intake  less than 300 mg·day
  • Minimal experience with the Dynavision D2 Assessments
  • Have no visual impairments that would interfere with study participation, or impairment correctable with corrective lenses
  • Have no chronic illness requiring medical attention or are not taking prescription or over the counter medications which might affect your performance in the assessment sessions

Exclusion Qualifications:

You may not participate in this research opportunity if any of the following applies to you:
  • Not currently participating in at least 150 minutes of physical activity per week. 
  • Currently taking a nutritional supplement known to improve reaction time that requires a wash-out period such as beta-alanine, phosphatidylserine, Ginkgo biloba extract, and tyrosine 
  • Report habitual caffeine consumption > 300 mg·day−1 
  • Regularly taking any type of prescription or over-the-counter medication which might affect your performance in the assessment sessions, or having any chronic illnesses, which require medical care. 
  • Current known pregnancy or intend to become pregnant during the study period 
  • Having previous experience continued training on the Dynavision D2. 
  • Impaired vision that cannot be corrected with corrective lenses. 
  • Currently taking any performance-enhancing drug


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UCF IRB#: 00004615
PI: Adam Wells
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Recruitment End Date:
February 28, 2023
Education Complex
4000 Central Florida Blvd.
Orlando, FL 32816
Time Commitment:
Number of visits: 32
Expected time per visit: 15 minutes
Point of Contact:
Jessica Moon
Faculty Advisors:
Adam J. Wells
Associated Units:
Health Sciences
Physical Therapy
Exercise Physiology & Rehabilitation Science
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