0223 COMBINED ACUTE EFFECTS OF SHORT TERM EXERCISE AND SLEEP ON DECLARATIVE MEMORY IN YOUNG, SEDENTARY ADULTS: A PILOT STUDY
Bibliographic record
Abstract
Research has provided evidence for the beneficial role of exercise in enhancing cognition and improving sleep. Sleep has been linked to memory processing and enhanced performance. Little is known about the effects of moderating factors. We aim to test the idea that a nap and a single aerobic exercise session may have synergistic, complementary effects on long-term memory in young sedentary adults. Participants were screened based on a history of having a low-to-moderate level of physical activity. Participants underwent medical and psychological evaluations, sleep screening, 10-day sleep diary and actigraphy. The study involved a between-subject design with three groups (N=5/group): 1) exercise+nap (ExNap), nap only (NoExNap), exercise only (ExNoNap). During the experimental procedure, participants were provided with a lunch after undergoing 40min of moderate-intensity cycling, followed by a study session (13h30), and a 60min nap (14h00). At the test session (17h00), the participants completed a recognition task whereby 45 of the previously studied photos were intermixed with 45 “foils”. The participant’s task was to indicate the previously presented photos by pressing a key on a computer. Polysomnography was used to monitor sleep. A visual analog scale for vigilance was administered prior to the memory testing. The outcome variables were accuracy, reaction times (RT) and sleep metrics (%N3, %N2, TST). We have preliminary data in 15 healthy, normal weight young adults (Mage23 ± 3.11SD yrs). We interpreted our results based on effect size, Cohen’s d calculations. A comparison between the groups showed that the ExNap group was more accurate than the NoExNap group (M±SD 93.8%±2.9 vs. 91.3%±8.7, respectively), d=.38. Furthermore, the NoExNap and the ExNap group were more accurate than the ExNoNap group (89.6%±6.6), d=.23 and d=.83, respectively. Pearson correlations revealed no significant associations between performance on the memory task and groups, or between RTs and sleep variables. These preliminary data, obtained in a small sample, support our hypothesis and suggest that a single moderate-intensity aerobic exercise session and a daytime nap may improve memory performance more than a nap or exercise alone in young adults with a sedentary lifestyle. American Sleep Medicine Foundation FPA 2016.
Fetched live from OpenAlex and de-inverted. Abstracts are not stored in this database: the inverted indexes are 8.6 GB of the frame’s 9.3 GB of text, and the host has 13 GB free.
How this classification was reachedexpand
Full frame machine prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.
Distilled classifier scores by category (both heads)
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.001 | 0.001 |
| Meta-epidemiology (narrow) | 0.001 | 0.000 |
| Meta-epidemiology (broad) | 0.001 | 0.001 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.001 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.001 |
| Research integrity | 0.001 | 0.001 |
| Insufficient payload (model declined to judge) | 0.003 | 0.001 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from itClassification
machine, unvalidatedMachine predicted; a candidate call from one source (direct Gemma or distilled Codex), not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".