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ObjectiveTo investigate the injury risk of simplified 24-action Taiji Quan wild horse mane splitting practice at different postures with mechanical analysis. MethodsThe mechanical model of the action of Taiji Quan wild horse mane splitting was establishied, and then the coordinates, velocity, acceleration and horizontal angle of thigh and lower leg were determined by image analysis. The force arm of quadriceps femoris was detected by X-ray, and the quadriceps femoris tension, femoral tibial joint force and patellofemoral joint pressure of wild horse mane splitting practice with different postures were compared. ResultsCompared with the high posture, the coordination and velocity decreased, the average angle of knee joint decreased from 128° to 115° at the low posture; and the knee moment, the quadriceps femoris tension, femoral tibial joint force and patellofemoral joint pressure significantly increased (F > 37.187, P < 0.001). ConclusionWhen practicing Taiji Quan wild horse mane splitting, the risk of knee injury at the low posture is higher than that at high posture.
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Mental stress may influence the autonomic nervous system (ANS) activity, and associate with the development of several chronic diseases. Mindfulness-based interventions, such as meditation, Yoga and Taiji Quan, are able to improve mental stress and ANS activity, which is probably related to its effects on the cortex to improve overall mental conditions and parasympathetic tone.
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Objective To explore the effects of traditional exercise therapy, such as Taiji Quan, on motor function of lower limbs in stroke patients.Methods From March, 2014 to March, 2016, 105 stroke patients were divided into control group (n = 35), Qigong group (n = 35) and Taiji group (n = 35). All the patients received routine rehabilitation. In addition, the Taiji group exercised with modified 24 type Taiji Quan, while the Qigong group exercised with Baduanjin. They were assessed with Fugel-Meyer Assessment-lower extremities (FMA-LE), and integral electromyography (iEMG) and co-contraction ratio (CR) of tibialis anterior muscle and gastrocnemius were recorded with surface electromyography, before, four weeks and eight weeks after treatment.Results There were 21 cases in the control group, 23 in the Qigong group and 28 in the Taiji group finishing the exercise. At the end of the 8th week, the score of FMA-LE was more in the Taiji group than in the control group (P ＜0.05). The i EMG of tibialis anterior muscle as dorsiflexsion was more in both the Taiji group and the Qigong group than in the control group (P ＜ 0.05). The CR of tibialis anterior muscle was less in the Taiji group than in both the control group and the Qigong group (P ＜ 0.05).Conclusion Both Taiji Quan and Qigong exercise may promote the activities of muscle of legs in the patients with stroke, while Taiji Quan seems to be better in the coordination between active muscles and antagonistic muscles.
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Objective:To explore the effect of Taiji Quan on the sleep quality of patients with chronic insomnia disorder (CID) and its mechanism. Methods:From January, 2015 to December, 2017, 31 patients with CID were enrolled in the sleep disorder clinic. Before and 24 weeks after Taiji Quan exercise, the Pittsburgh Sleep Quality Index (PSQI) was used to assess their sleep quality, the serum levels of tumor necrosis factor (TNF)-α, TNF-β, soluble tumor necrosis factor receptor (sTNF-R)1 and sTNF-R2 were detected with protein chip, and the correlation between the total score of PSQI and the serum levels of TNF-α, TNF-β, sTNF-R1 and sTNF-R2 were analyzed after exercise. Results:After Taiji Quan exercise, the scores of PSQI factors (subjective sleep quality, sleep latency, sleep duration, habitual sleep efficiency, sleep disturbances, daytime dysfunction) and the total score of PSQI decreased (t > 4.080, P < 0.05). The serum levels of TNF-α and TNF-β decreased (t > 13.580, P < 0.01), however, the serum levels of sTNF-R1 and sTNF-R2 significantly increased (t > 160.189, P < 0.001). The serum levels of TNF-α and TNF-β were positively correlated with the total score of PSQI (r > 0.638, P < 0.001), while the serum levels of sTNF-R1 and sTNF-R2 were negatively correlated with the total score of PSQI (r > 0.532, P<0.001). Conclusion:Taiji Quan exercise could help to improve the sleep quality of patients with CID. The mechanism may be related to the decrease of the serum levels of TNF-α and TNF-β, and the increase of the serum levels of sTNF-R1 and sTNF-R2.
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Objective To investigate the effects of aquatic Taiji Quan on balance function of patients with incomplete spinal cord injury. Methods From March to December, 2015, 30 patients with incomplete spinal cord injury received aquatic Taiji Quan exercise based on rou-tine rehabilitation, 30 minutes every day, five times a week for five weeks. They were assessed with Berg Balance Scale (BBS) before and after exercise. Dynamic balance function and static balance function were also assessed with Active Balancer assessment. Results The BBS score significantly improved after exercise (t=-9.652, P3.528, Z>-2.590, P0.05). The dynamic stability limit range enlarged (t=-4.516, P<0.01), and the time to target significantly shortened (t=4.530, P<0.001). Conclusion Aquatic Taiji Quan can improve the balance function of patients with incomplete spinal cord injury.
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Fall has seriously impaired the quality of life of old people. The main risk factors for fall in the old people are concerned with balance dysfunction which is caused by ageing. Taiji Quan exercise can promote the lower limb muscle strength, proprioception, neuro-muscular reaction, gait and cognition of the old people, that plays a role in fall prevention.
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@#Taiji Quan exercise has been confirmed benefit in the rehabilitation for spinal cord injured patients, that may improve the motor and sense function, promote the physical and mental health.
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@#Taiji Quan, as a kind of mild to moderate aerobic exercise, may do benefit in senile hypertension patients. From the views of Traditional Chinese Medicine, Taiji Quan can make the Yin and Yang balance and the Channels and Meridians smooth. For the modern medicine, Taiji Quan can regulate the function of circulation, breath, nerve, incretion and metabolism, etc.