Currently, university students face physical and mental health issues, which are reflected in low levels of physical activity, a decline in healthy eating behaviors, and a high prevalence of mental health symptoms such as stress, anxiety, and depression. Therefore, it is necessary to develop safe, effective, and sustainable interventions that support comprehensive health and provide formative experiences that reinforce the importance of developing healthy lifestyle habits and self-care. In this regard, Tai Chi has been shown to offer physical and mental health benefits. Tai Chi is a low- to moderate-intensity exercise with low joint impact, which facilitates the transition from a sedentary to an active lifestyle. Considering the health problems experienced by university students, it is proposed that a Tai Chi intervention could help produce beneficial effects on both physical and mental health. In this context, the present study aims to implement Tai Chi classes with the objective of determining their effect on the cardiac autonomic system, mental health, and the perception of benefits, facilitators, and barriers among participating university students compared to a control group.
In Chile, there are currently over 1.2 million undergraduate university students who exhibit low levels of physical activity and mental health issues such as anxiety and depression. These problems tend to worsen after the first year of higher education, along with the development of unhealthy eating habits and weight gain. In this context, Tai Chi has shown multiple benefits for overall health. Specifically, the Sun style of Tai Chi is characterized by gentle and accessible movements, making it well-suited to the university setting, and has demonstrated positive effects on both physical and mental health. Previous studies indicate that regular practice of Tai Chi may positively influence autonomic cardiac control, measured through heart rate variability (HRV), as well as mental health. However, the available evidence is still limited and heterogeneous. This study aims to evaluate, in university students, the effects of a 12-week Sun Tai Chi program, with 60-minute sessions held twice per week, on the following: * Heart Rate Variability (HRV), as a marker of cardiovascular health and stress, * Mental health, assessed with the Depression Anxiety Stress Scales - 21 Items (DASS-21 scale), * Participants' qualitative perceptions regarding the program's benefits, barriers, and facilitators. Given the limited research on Tai Chi in university student populations, this study seeks to contribute evidence on its potential comprehensive health benefits in this group.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
SINGLE
Enrollment
56
The Sun Tai Chi intervention will be conducted by a Sun Tai Chi instructor with 7 years of teaching experience and will take place in an exercise room at the Catholic University of Maule. The intervention will last for 12 weeks, with a frequency of twice per week, and each class will last 60 minutes. Each session will begin with 10 minutes of warm-up exercises, followed by 20 minutes of basic Sun Tai Chi exercises, including lower limb movements, overall body mobility at a slow pace, precise movements of the hands and feet, and proper body alignment. This will be followed by 20 minutes of practice of the basic movement sequence of Sun Tai Chi (Taolú), and will conclude with 5 minutes of meditation and 5 minutes of relaxation exercises.
The control group will receive guidance on a healthy physical and mental lifestyle.
Universidad Católica del Maule
Talca, Maule Region, Chile
RECRUITINGDASS-21 stress
Stress will be measured using the stress subdomain of the DASS-21, which ranges from 0 to 21 points, with higher scores indicating higher levels of stress.
Time frame: Initial evaluation: Prior to the intervention (week 0) Intermediate evaluation: After 6 weeks of intervention Final evaluation: After 12 weeks of intervention
DASS-21 anxiety
Anxiety will be measured using the anxiety subdomain of the DASS-21, which ranges from 0 to 21 points, with higher scores indicating higher levels of anxiety.
Time frame: Initial evaluation: Prior to the intervention (week 0) Intermediate evaluation: After 6 weeks of intervention Final evaluation: After 12 weeks of intervention
DASS-21 depression
Depression will be measured using the depression subdomain of the DASS-21, which ranges from 0 to 21 points, with higher scores indicating higher levels of depression.
Time frame: Initial evaluation: Prior to the intervention (week 0) Intermediate evaluation: After 6 weeks of intervention Final evaluation: After 12 weeks of intervention
RMSSD
RMSSD (ms) is an index of parasympathetic cardiac autonomic modulation derived from the analysis of RR intervals (iRR).
Time frame: Initial evaluation: Prior to the intervention (week 0) Intermediate evaluation: After 6 weeks of intervention Final evaluation: After 12 weeks of intervention
SDNN
SDNN (ms) is an index of overall heart rate variability reflecting the cardiac autonomic modulation derived from the analysis of RR intervals (iRR).
Time frame: Initial evaluation: Prior to the intervention (week 0) Intermediate evaluation: After 6 weeks of intervention Final evaluation: After 12 weeks of intervention
Low frequency (LF)
LF (ms2) is an index of parasympathetic and sympathetic cardiac autonomic modulation derived from the analysis of RR intervals (iRR).
Time frame: Initial evaluation: Prior to the intervention (week 0) Intermediate evaluation: After 6 weeks of intervention Final evaluation: After 12 weeks of intervention
High frequency (HF)
HF (ms2) is an index of parasympathetic cardiac autonomic modulation derived from the analysis of RR intervals (iRR).
Time frame: Initial evaluation: Prior to the intervention (week 0) Intermediate evaluation: After 6 weeks of intervention Final evaluation: After 12 weeks of intervention
Low frequency/Hight frequency ratio (LF/HF)
LF/HF is an index reflecting the balance between the parasympathetic and sympathetic cardiac autonomic modulation derived from the analysis of RR intervals (iRR).
Time frame: Initial evaluation: Prior to the intervention (week 0) Intermediate evaluation: After 6 weeks of intervention Final evaluation: After 12 weeks of intervention
Pattern with no variation (0V)
0V (%) is a pattern quantified through symbolic analyses of the RR intervals (iRR) reflecting the sympathetic cardiac modulation.
Time frame: Initial evaluation: Prior to the intervention (week 0) Intermediate evaluation: After 6 weeks of intervention Final evaluation: After 12 weeks of intervention
Pattern with two unlike variation (2ULV)
2ULV (%) is a pattern quantified through symbolic analyses of the RR intervals (iRR) reflecting the parasympathetic cardiac modulation.
Time frame: Initial evaluation: Prior to the intervention (week 0) Intermediate evaluation: After 6 weeks of intervention Final evaluation: After 12 weeks of intervention
Baroreflex sensitivity (BRS)
Baroreflex sensitivity is an index that assesses the heart rate response to changes in blood pressure and serves as an indicator of cardiovascular health.
Time frame: Time Frame: Initial evaluation: Prior to the intervention (week 0) Intermediate evaluation: After 6 weeks of intervention Final evaluation: After 12 weeks of intervention
LFSAP
The low-frequency index of systolic arterial pressure (LFSAP) reflects the vascular sympathetic autonomic modulation.
Time frame: Time Frame: Initial evaluation: Prior to the intervention (week 0) Intermediate evaluation: After 6 weeks of intervention Final evaluation: After 12 weeks of intervention
Qualitative perception
The qualitative perception of the participants will consider the perceived benefits, barriers, and facilitators. Data will be collected through semi-structured interviews and focus groups, using a qualitative approach.
Time frame: It will be conducted one week after the last Tai Chi class.
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