Effect of low-intensity and slow-movement shoulder external rotation exercise on muscle contraction characteristics in the infraspinatus muscle

Introduction: The glenohumeral joint has the greatest range of motion. Its stability is relatively poor. It depends on muscle strengthening and increased proprioception in the articular and adjacent joint tissues. Muscle-strengthening training for this joint is still an empirical subject related to table tennis players. Objective: Explore muscle strengthening training's effect on shoulder muscle injury in table tennis players. Methods: Eight table tennis players from a university were selected as a research subject, separated, and classified between injured and control group. Three weeks of strengthening training were adopted to rehabilitate the rotator cuff injury of the table tennis team athletes. The joint angle test and kinematics were collected with isokinetic force measurement employing Cybex-6000. The EMG and other relevant data were collected before and after the experiment. Results: The infraspinatus strength test results of 8 athletes before the experiment were 1.88 ± 2.10 versus 1.61 ± 1.80 after the experiment; there was no change in pain among 5 of the eight athletes, the shoulder pain of 1 athlete increased, and the shoulder pain of the other 2 table tennis players decreased. Conclusion: Strengthening exercise by intensive shoulder training proved effective in conjunction with traditional rehabilitation, positively influencing hypertrophy and proprioception of the joint complex. Evidence Level II; Therapeutic Studies – Investigating the results.

Section: Discussionmentioning

confidence: 99%

Intensive Training Effects on Shoulder Muscle Injury in Table Tennis Players

2022

“…2 In view of this research problem, Wang X and others measured and analyzed the plantar pressure in 9 areas of the sole of the foot in 5 typical movements of 16 excellent Taijiquan practitioners, and concluded that: in Taijiquan, the pressure of the first metatarsal and the first toe is significantly greater than that of other parts; 3 Pjc A and others compared and analyzed the plantar pressure of Taijiquan exercise and normal walking of 16 Taijiquan athletes, and believed that the total duration of single foot support posture in Taijiquan exercise was less than that of normal walking, and the trajectory of pressure center in the left and right directions was larger; 4 Kotoshiba s and others studied and analyzed the plantar pressure and human spine of the typical movements of Taijiquan of two young male athletes, and pointed out that the subjects had good similarities in Ding step, bow step, up step and the deviation of pressure center point, while there were great differences in virtual step and backward step. 5 Based on the current research, this paper puts forward the lower limb balance control characteristics of Taijiquan staring leg movement. It is found that the discharge sequence of each test muscle in the vertical balance of side kick and holding feet is as follows: the anterior tibial muscle discharges first, the rectus femoris and biceps femoris secondly, and finally the three muscles of gastrocnemius, middle gluteus and gluteus maximus discharge almost at the same time.…”

Section: Introductionmentioning

confidence: 99%

Lower Limb Balance Characteristics During Tai Chi Chuan

Liu

2023

Introduction: Tai chi chuan training claims to not only promote the circulation of internal energy in the body to achieve a preventive and healing effect of diseases, but also to improve static and dynamic body balance. While the former claims are not validable, the question about the effectiveness of improving balance remains valid. Objective: Verify the characteristics of lower limb balance during tai chi chuan practice. Methods: Selected volunteers underwent a bioelectricity testing system via noninvasive surface electromyography to evaluate muscle activity during the exercises. The results were collected, cataloged and statistically work on corresponding graphs according to different content of literature research for objective analysis. Results: The variation of the displacement of the center of gravity was controlled within 0.1M, the most unstable time of the center of gravity was about 0.65s before the start of balance. In temporal terms, it is found that the order of discharge of each muscle tested in the vertical balance and unilateral support was as follows: the tibialis anterior muscle discharges first, the rectus femoris and biceps femoris second, finally gastrocnemius, gluteus medius and gluteus maximus joint discharge almost at the same time. Conclusion: Some benefit is perceived in the validity of improving lateral balance velocity, shortening the action completion time, and improving balance stability, improving the quality of action in practitioners of this exercise modality. Level of evidence II; Therapeutic studies - investigation of treatment outcomes.

“…Therefore, it is widely favored by school physical education teachers. 3 Through the table tennis training for teenagers, the physical and psychological quality of students can be effectively improved, so as to promote the physical and mental health of teenagers. 4 In order to further explore the influence of table tennis training on Teenagers' muscle quality and cardiopulmonary endurance, this paper conducted table tennis training for a middle school student, and explored this problem from three aspects: the comprehensive quality of upper limb strength, the cardiopulmonary function and the change of aerobic capacity, so as to verify the effectiveness of table tennis training on Teenagers' quality improvement.…”

Section: Introductionmentioning

confidence: 99%

Impacts of Table Tennis on the Health of Young Students

Han,

Wang

2023

Introduction By improving the material level of life, the amount of exercise of adolescents is decreasing, leading the muscular strength and cardiorespiratory resistance to also decrease instead of increase. Therefore, it is urgent to present effective training methods in physical education teaching to benefit adolescents’ quality of life. Objective Study the effect of table tennis training on musculature and cardiorespiratory endurance in young students. Methods 60 students from grade 7 of a high school were randomly divided into experimental and control groups. The experiment lasted for 9 weeks. In this paper, intra-group comparisons and inter-group comparisons were used. Before the experiment and after 9 weeks of training, students had their biophysical indicators collected; these data were analyzed and statistically compared. Results Existing physical education training can overall improve students’ physical muscular and cardiopulmonary endurance. The results show that the current training is effective, but inferior to that experienced with table tennis, and should be adjusted. Conclusion In teaching high school youth, physical education teachers are advised to promote table tennis to promote the young student’s health. Level of evidence II; Therapeutic studies - investigation of treatment outcomes.