Some trials found improvements in selected older or clinical populations, using different programmes and outcomes. Adapted fall-prevention training is not a standard 24-form class, and the sleep trial did not establish that tai chi always outperforms other exercise.
Three questions need three kinds of measurement
Falls research counts events and people who fall. Sleep research may use wrist movement records, questionnaires, or diaries. A disease-specific questionnaire can combine symptoms and their effect on daily life. These cannot be merged into one general percentage of better health.
The three trials below illustrate how to read evidence. This is not a complete, current review of every tai chi study or a course prescription based on symptoms.
Falls: a specific adapted programme
Li and colleagues’ 2018 trial involved 670 adults aged 70 or older with a previous fall or mobility limitation. All three groups attended two supervised one-hour classes weekly for 24 weeks. The tai chi group used eight adapted movements and functional training.
| During 24 weeks | Adapted tai chi, 224 people | Stretching, 223 people |
|---|---|---|
| Total fall events | 152 | 363 |
| People with at least one fall | 85 | 127 |
A person can fall more than once. The event-rate ratio versus stretching was 0.42 (95% confidence interval 0.31–0.56), not a 58% personal risk reduction for everyone. Non-injurious falls also occurred during classes. Population selection, a single US state, and self-reported falls limit generalisation. See the full study profile.
Sleep: modest changes in a supervised 24-form programme
Siu and colleagues’ 2021 Hong Kong trial enrolled 320 adults aged 60 or older with chronic insomnia. The tai chi group attended three one-hour Yang-style 24-form classes weekly for 12 weeks. Comparison groups received walking plus strengthening, or no new intervention.
At 12 weeks, tai chi versus the no-new-intervention group improved actigraphy-estimated sleep efficiency by 3.4 percentage points (95% confidence interval 1.6–5.1) and reduced wake time after sleep onset by 13.3 minutes (5.2–21.3). The latter is not 13.3 extra minutes of sleep. These objective outcomes did not differ significantly from conventional exercise at that point.
Actigraphy estimates sleep from movement rather than measuring sleep brain waves. Some favourable findings remained at 24 months, but participants could continue activity independently; this does not prove persistence after stopping. A supervised programme is not interchangeable with an arbitrary video. See the sleep guide.
Fibromyalgia: an impact questionnaire, not a universal pain score
Wang and colleagues’ 2018 trial involved 226 adults with fibromyalgia. Four tai chi groups varied in frequency and duration—once or twice weekly for 12 or 24 weeks—and were compared with aerobic exercise. At week 24, the combined tai chi groups improved 5.5 points more on the 0–100 revised Fibromyalgia Impact Questionnaire (95% confidence interval 0.6–10.4).
The questionnaire includes function, symptoms, and daily impact; it is not a pain-only scale. The average 5.5-point difference was below the paper’s estimated 8.1-point threshold for clinical importance. A separate matched-schedule subgroup result does not replace the combined estimate. These findings do not apply automatically to all back or joint pain. See the trial profile.
Use the comparison actually made in the study
Ask whether a trial compared the two programmes you are considering. The falls trial had no Baduanjin group. The sleep trial found no clear difference on certain objective outcomes between its tai chi and conventional-exercise groups. Neither result chooses one best practice for everyone.
For general learning, compare movement demands, teaching, and whether you can attend consistently. Fall risk, persistent insomnia, or ongoing pain require appropriate assessment beyond choosing a website routine. See learning tai chi or qigong and study durations and follow-up.
An average benefit does not remove individual difficulties
NCCIH notes that reported practice-related problems can include musculoskeletal aches or pain. Slow and low-impact does not mean risk-free. A study average is not a reason to continue through pain, dizziness, or an action requiring support you do not have.
Describe the turns, backward steps, kicks, or low positions when seeking advice about an injury or movement restriction. Persistent sleep or pain problems need separate evaluation; do not wait for a study’s number of weeks or change treatment on the basis of this overview.
References and sources
- Li F et al. (2018): therapeutic tai ji quan and falls in older adults
JAMA Internal Medicine, doi:10.1001/jamainternmed.2018.3915. Read the open paper: 670 adults aged 70 or older with prior falls or impaired mobility; 24 weeks, two 60-minute classes weekly. The adapted balance program was compared with multimodal exercise and stretching, not ordinary 24-form versus Baduanjin. Read our study summary →
- Siu PM et al. (2021): tai chi, exercise, and sleep in older adults with insomnia
JAMA Network Open, doi:10.1001/jamanetworkopen.2020.37199. Read the abstract, methods, primary results, attrition, and limitations: 320 adults aged at least 60 in Hong Kong; 12 weeks, three 60-minute classes weekly. Wrist actigraphy is not sleep EEG, and follow-up does not establish what happens after all activity stops.
- Wang C et al. (2018): tai chi versus aerobic exercise in fibromyalgia
BMJ, doi:10.1136/bmj.k851. Open paper: 226 adults; four tai chi schedules over 12 or 24 weeks, once or twice weekly, compared with aerobic exercise. FIQR is a 0–100 measure of overall condition impact, not pain alone. Pooled and matched-duration comparisons are kept separate. Read our study summary →
- NCCIH: Tai Chi—What You Need To Know
An overview of research, safety, and variation in instructor training. It does not validate every tai chi course, and trial schedules are not personal practice prescriptions. Read our study summary →
