Cardiovascular Reactivity to Short Duration Videos in Adolescents: An Exploratory Study
Bibliographic record
Abstract
The objective of this study is to observe the cardiovascular changes associated to the visualization of three YouTube video sequences: humor-sad-violent in an adolescent population. Thirty-two adolescents (16 males and 16 females) were shown three YouTube one-minute sequences (humor-sad-violent). At key points during the sequences, the cardiac rate (HR) and blood pressure (BP) were recorded. A subjective perceptual evaluation of the videos was obtained. Statistical evaluation of the data was done with the Mann-Whitney test. Minor changes in HR and the diastolic blood pressure (DP) were recorded but did not prove to be statistically significant. Of statistical significance (p < 0.05), the males rated the violent sequence as more violent than the females did. There was a minor decrease of their HR and DP. An average 10 mmHg decrease in their systolic blood pressure nearly reached statistical significance (p = 0.067). In this exploratory study, exposure to a violent video sequence was associated with a decrease of the male adolescents' average systolic pressure. It is suggested that such a response may mean a relaxing effect due to this activity. Further investigation is required with a larger cohort and continuous monitoring to confirm these findings.
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How this classification was reachedexpand
Full frame distilled prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.
Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.002 | 0.001 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.001 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.001 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.000 | 0.000 |
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 teacher head, 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".