Tai Chi and eCB in Women

The endocannabinoid system (ECS) is widely found in central and peripheral systems, and the immune system. Emerging studies have shown endocannabinoid plays a role in appetite, pain sensation, control of chronic pain, macronutrient metabolism, mood/mood disorder, and regulation of immune cell functions. Moderate-intensity aerobic exercise has shown to increase circulatory endocannabinoids. Moderate-intensity exercise improves cognition, memory, and wellbeing in adults. Exercisers experience decreased tension, depression, and anger. Therefore, these findings in humans suggest a likely relationship for exercise effecting well-being via ECS. In this study, we will study Tai Chi, a mind-body moderate-intensity exercise, intervention for its effects on ECS in women. A pre-post design trial will be conducted on 15 qualified subjects. All subjects will be assigned to Tai Chi group for one week including 3 sessions, 60 minutes per session, on 3 non-consecutive days. We will measure plasma eCB levels at baseline, before and after 4th session of Tai Chi. All data will be analyzed statistically at p<0.05.

Inclusion criteria

• Postmenopausal women (menopause is defined as the absence of menstrual period for 12 months, not related to pregnancy/lactation, hormonal contraception). Age 40-70 years old with BMI between 25-35 kg/m2.
• English literacy.

Exclusion criteria

• prior experience with mind-body practice (e.g., TC, Qi Gong, yoga, meditation).
• Severe medical limitations (i.e., dementia, symptomatic heart or vascular disease, or recent stroke) precluding full participation.
• Medical/neurologic or other systemic diseases affecting the musculoskeletal systems (i.e. polio/Parkinson's/ multiple sclerosis, etc. in addition to cerebral vascular accident or stroke) and diabetes with peripheral neuropathy affecting their sensory/balance.
• taking pain/anti-inflammatory and sleep medications within the 3 months before study starts.
• taking hormone-replacement therapy within the 3 months before study starts.