An interventional study of Brief Classroom-Based Physical Exercise Program in Mental Health and Physical Activity, sponsored by Dynamical Business and Science Society - DBSS International SAS. Completed at 1 site in Colombia. Open to participants aged 16 Years and older, including healthy volunteers. Per ClinicalTrials.gov, last updated 2026-08-11.
Sponsored by Dynamical Business and Science Society - DBSS International SAS · Not applicable, Interventional, and Prevention
This 16-week, three-group, nonrandomized interventional study evaluated whether the weekly frequency of a brief classroom-based physical exercise program was associated with changes in mental health and physical activity among 105 undergraduate medical students at Universidad Tecnologica de Pereira, Colombia. EG2 (n=35) received two exercise sessions per week, EG1 (n=37) received one session per week, and CG (n=33) received no exercise intervention. Anxiety, depression, stress, and physical activity were assessed at baseline and after 16 weeks.
The three groups were specified prospectively in the ethics-approved protocol. Participation was voluntary, and all participants completed written informed consent. Academic groups were formed independently of the investigators by the university Registration and Academic Control Unit through its routine enrollment process. Both intervention groups received the same approximately 10-minute classroom exercise program and differed only in weekly frequency. Each session comprised a 3-minute warm-up, a 5-minute interval circuit involving large muscle groups, and a 2-minute cool-down with stretching and breathing. Exercises varied across sessions and intensity increased progressively. The target intensity was 5 to 7 on the modified 0-to-10 Borg scale together with a moderate Talk Test response. Attendance was called before each session by the assigned instructor, and withdrawal during a session was recorded. Adherence was defined as attendance at 80% or more of delivered sessions. No adverse events were recorded.
2,193 studies on the registry are indexed under Psychological Well-Being; 728 are open to participants now.
This study's enrollment of 105 is close to the median of 110 across 1,796 interventional studies indexed under Psychological Well-Being.
Browse Psychological Well-Being studies →Dynamical Business and Science Society - DBSS International SAS is the lead sponsor of 8 studies on the registry; 3 are open to participants now.
Compared within Psychological Well-Being, the registry's first condition term, which may not be this study's main condition. Counted across the registry records on this site, refreshed daily. How we classify →
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Exclusion Criteria:
- Medical conditions that precluded participation in physical exercise.
Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Before you join, the study team explains what taking part involves — its purpose, what happens, the risks and possible benefits — and answers your questions, so you can decide freely. Consent is usually recorded on a form (the informed consent form, ICF) signed by you or, where the law allows, by someone legally authorised to decide for you.
You can keep asking questions during the study, you are told of new information that matters, and you can choose to leave at any time.
Informed consent
Before you join, the study team explains what taking part involves — its purpose, what happens, the risks and possible benefits — and answers your questions, so you can decide freely. Consent is usually recorded on a form (the informed consent form, ICF) signed by you or, where the law allows, by someone legally authorised to decide for you.
You can keep asking questions during the study, you are told of new information that matters, and you can choose to leave at any time.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Thirty-five participants received two approximately 10-minute classroom exercise sessions per week for 16 weeks, corresponding to 32 delivered sessions.
Behavioral: Brief Classroom-Based Physical Exercise Program
Thirty-seven participants received one approximately 10-minute classroom exercise session per week for 16 weeks, corresponding to 16 delivered sessions.
Behavioral: Brief Classroom-Based Physical Exercise Program
Thirty-three participants continued usual classroom activities and received no study exercise sessions during the 16-week period.
Approximately 10-minute sessions comprising a 3-minute warm-up, a 5-minute interval circuit involving large muscle groups, and a 2-minute cool-down. Exercises varied and intensity increased progressively, targeting 5 to 7 on the modified 0-to-10 Borg scale and a moderate Talk Test response. The program required no exercise equipment.
Change in anxiety symptom score assessed with the DASS-21 anxiety subscale
Seven items are summed without doubling to obtain a raw score from 0 to 21. Higher scores indicate greater anxiety symptom severity.
Time frame: Baseline and post-intervention at week 16
Change in depression symptom score assessed with the DASS-21 depression subscale
Seven items are summed without doubling to obtain a raw score from 0 to 21. Higher scores indicate greater depression symptom severity.
Time frame: Baseline and post-intervention at week 16
Change in psychological stress score assessed with the DASS-21 stress subscale
Seven items are summed without doubling to obtain a raw score from 0 to 21. Higher scores indicate greater stress symptom severity.
Time frame: Baseline and post-intervention at week 16
Change in total physical activity assessed with the short-form International Physical Activity Questionnaire
Total physical activity is expressed as MET-minutes/week by summing walking, moderate-intensity, and vigorous-intensity activity. Higher values indicate a greater physical activity volume.
Time frame: Baseline and post-intervention at week 16
Plan to share: Yes
This study is completed, as verified in Aug 2026. You cannot join it, but the record below documents what was studied.
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Dynamical Business and Science Society - DBSS International SAS