Application of Virtual Reality Based on Computer Vision in Sports Posture Correction

In recent years, with the rise of virtual and sports, people are often injured due to irregular movements during exercise. Based on this, this article takes the basic concept of computer virtual reality as the starting point and analyzes the adoption of computer virtual reality in sports correction. The choice of corrective exercises depends on the daily wrong exercises. If there is an error in any operation, please select the corresponding operation mode for the error operation for corrective training. If there are multiple errors at the same time, we compare and select the error operation that needs to be resolved first and the error operation that needs to be resolved later. In our daily life, the squat action pattern of Tai Chi Half-squat stance ball is closely related to us, and its action pattern can fully reflect the core stability of the subject. In this study, 42 students were selected as the students of a college sports college in Dalian. There are 7 people in each group, divided into 6 groups. The first three groups used exercise correction to assist the traditional teaching method (experimental group). It was found that the performance error rate of the first three groups reached 65%, and the last three groups used the assisted virtual reality teaching method, and the error rate was only 4%. Therefore, we adopted the teaching of virtual reality can reduce the error rate of the movement posture. We trained them for half a year and assessed and scored them once a month. We collect this data and analyze it to reach a conclusion. The experimental results prove that the experimental group has a significant difference before and after the squat test ( P < 0.05 ), and postexperiment there is a remarkable disparity among the experimental group and the comparison group ( P < 0.05 ). Therefore, squatting correction training is effective in improving the wrong squat. It is very effective for problems such as posture movement mode and joint limitation. Therefore, it is a very meaningful thing to explore the exercise correction training based on the virtual reality of computer vision.

Kinematic Analysis of 360° Turning in Stroke Survivors Using Wearable Motion Sensors

Background: A stroke often bequeaths surviving patients with impaired neuromusculoskeletal systems subjecting them to increased risk of injury (e.g., due to falls) even during activities of daily living. The risk of injuries to such individuals can be related to alterations in their movement. Using inertial sensors to record the digital biomarkers during turning could reveal the relevant turning alterations. Objectives: In this study, movement alterations in stroke survivors (SS) were studied and compared to healthy individuals (HI) in the entire turning task due to its requirement of synergistic application of multiple bodily systems. Methods: The motion of 28 participants (14 SS, 14 HI) during turning was captured using a set of four Inertial Measurement Units, placed on their sternum, sacrum, and both shanks. The motion signals were segmented using the temporal and spatial segmentation of the data from the leading and trailing shanks. Several kinematic parameters, including the range of motion and angular velocity of the four body segments, turning time, the number of cycles involved in the turning task, and portion of the stance phase while turning, were extracted for each participant. Results: The results of temporal processing of the data and comparison between the SS and HI showed that SS had more cycles involved in turning, turn duration, stance phase, range of motion in flexion–extension, and lateral bending for sternum and sacrum (p-value < 0.035). However, HI exhibited larger angular velocity in flexion–extension for all four segments. The results of the spatial processing, in agreement with the prior method, showed no difference between the range of motion in flexion–extension of both shanks (p-value > 0.08). However, it revealed that the angular velocity of the shanks of leading and trailing legs in the direction of turn was more extensive in the HI (p-value < 0.01). Conclusions: The changes in upper/lower body segments of SS could be adequately identified and quantified by IMU sensors. The identified kinematic changes in SS, such as the lower flexion–extension angular velocity of the four body segments and larger lateral bending range of motion in sternum and sacrum compared to HI in turning, could be due to the lack of proper core stability and effect of turning on vestibular system of the participants. This research could facilitate the development of a targeted and efficient rehabilitation program focusing on the affected aspects of turning movement for the stroke community.

Pengaruh Metode Mc Kenzie Exercise dan Core Stability Exercise terhadap Penurunan Nyeri pada Penderita Hernia Nucleus Pulposus

Hernia Nucleus Pulposus (HNP) is one of the causes of lower back pain due to heavy mechanical loads for a long time. HNP if not treated immediately it can cause fluid buildup and swelling that can cause permanent nerve damage. This study is a quantitative study with a quasi-experimental pre-test-post-test design with a control group divided into 3 groups. The sampling technique was using probability sampling method as many as 30 respondents who visited Grandmed Lubuk Pakam Hospital. The results of the statistical test showed that there was an effect of McKenzie and Core Stability Exercise on reducing pain in patients with HNP with a p value of 0.020 <0.05.

Relación entre la estabilidad del core y el equilibrio postural en las habilidades biomotoras de los jóvenes atletas de baloncesto: una revisión sistemática (Relationship between Core Stability and Postural Balance on the Biomotor Capabilities of Young B

El baloncesto requiere exigencias físicas variadas, caracterizadas por esfuerzos intermitentes y situaciones de desequilibrio. Core Stability (EC) y Postural Balance (EP) son temas asociados como un factor significativo en la prevención de lesiones y dolor. Sin embargo, los resultados de los estudios en relación con las habilidades biomotoras son contrastantes, lo que indica que no hay efectos sobre el rendimiento deportivo en el contexto de alto rendimiento, pero es necesario profundizar las investigaciones sobre esta relación en la población adolescente.El objetivo del estudio fue verificar la relación entre la EC y la EP sobre las habilidades biomotoras en practicantes de baloncesto adolescentes. Utilizando la estrategia PICO, se realizaron búsquedas en las bases de datos PubMed y Scielo, buscando estudios experimentales con intervención de ejercicios EC / EP y pruebas de rendimiento atlético. Los resultados apuntan pocos estudios con efectos positivos sobre el rendimiento deportivo de los jóvenes atletas de baloncesto, pero no fue posible identificar pruebas sólidas de la influencia positiva del entrenamiento de EC / EP en las habilidades biomotoras de los adolescentes practicantes de baloncesto. Es necesario realizar más investigaciones sobre la influencia en los indicadores de rendimiento deportivo. Abstract. Basketball demands varied physical demands, characterized by intermittent efforts and situations of imbalance. Core Stability (EC) and Postural Balance (EP) are themes that have been associated as a significant factor in the prevention of injuries and pain. However, the results of studies in relation to biomotor skills are contrasting, indicating that there are no effects on athletic performance in the context of high performance, but investigations on this relationship in the adolescent population need to be further investigated. The aim of the study was to verify the relationship between EC and PE on biomotor skills in adolescent basketball players. Using the PICOS strategy, searches were performed in the PubMed and Scielo databases, looking for experimental studies with EC / EP exercise intervention and athletic performance test. The results point to studies with positive effects on the athletic performance of young basketball athletes, however few among them used a specific additional intervention. There is a need for further investigation regarding the influence on athletic performance indicators.

Pengaruh Penambahan Latihan Core Stability Terhadap Peningkatan Nilai Kesegaran Jasmani B Pada Prajurit

An Army soldier must be able to foster physical fitness so that his body becomes healthy and can carry out his main duties to maintain the sovereignty and territorial integrity of the Republic of Indonesia. This study aims to determine the effect of adding core stability exercise to increasing the value of physical fitness B in soldiers. Quasi experimental design research held at Yon Armed 4 Cimahi. A sample of 20 soldiers divided into 2 groups. The dependent variable is the physical fitness score B and the independent variable is the core stability exercise. Exercise is carried out for 4 weeks with a frequency of 3 times per week. The difference in test results between the experimental group and the control group both before and after core stability exercise was tested by independent T test. There was a difference in the mean physical fitness scores between the experimental group (Mean= 85.80; SD= 2.82) and the control group (Mean= 82.50; SD= 2.32) before the intervention, and the difference was statistically significant (p= 0.011). There was a difference in physical fitness scores before and after the intervention between the experimental group (Mean= 3.90; SD= 1.52) and the control group (Mean= 1.60; SD= 0.70) and statistically significant (p < 0.001), with effect size = 1.94. Conclusion core stability exercise is effective to increase the physical fitness value of B on soldiers of Yon Armed 4 Cimahi

Pengaruh Penambahan Core Stability Exercise Terhadap Peningkatan Kebugaran Jasmani A (Daya Tahan)pada Prajurit Militer Brigif 15 Kujang II Cimahi

Physical fitness is the body's ability to carry out physical activities without causing excessive fatigue. For a military soldier, physical fitness plays an important role in improving and maintaining the military body, in order to support the implementation of the main tasks of military soldiers. Physical fitness can be optimized, one of which is the core stability exercise. This study aims to analyze the effect of adding core stability exercise to increase physical fitness A (endurance) in military soldiers at Brigif 15 Kujang II Cimahi. A quasi-experimental study with a pre-post two group design approach consisting of an experimental group and a control group. With purposive sampling technique, 48 people were selected which were divided into two groups, namely the experimental group (n=24) and the control group (n=24). The experimental group was given a 12-minute running exercise program and core stability exercise while the control group was only given a 12-minute running exercise and data collection in the form of a 12-minute running test. There was a difference in the mean physical fitness score A between the experimental group (Mean= 40.33; SD= 3.54) and the control group (Mean= 44.17; SD= 6.72) before the intervention, and the difference was statistically significant (p= 0.017). There was a difference in physical fitness scores before and after the intervention between the experimental group (Mean= 4.38; SD= 1.41) and the control group (Mean= 2.42; SD= 2.04) and statistically significant (p<0.001), with effect size = 1.14. Core stability exercise is effective to increase the value of physical fitness A in Brigif 15 Kujang II Cimahi soldiers.

Exercise-Based Training Strategies to Reduce the Incidence or Mitigate the Risk Factors of Anterior Cruciate Ligament Injury in Adult Football (Soccer) Players: A Systematic Review

Anterior cruciate ligament (ACL) is one of the most concerning injuries for football players. The aim of this review is to investigate the effects of exercise-based interventions targeting at reducing ACL injury rate or mitigating risk factors of ACL injury in adult football players. Following PRISMA guidelines, a systematic search was conducted in CINAHL, Cochrane Library, PubMed, Scopus, SPORTDiscus and Web of Science. Studies assessing the effect of exercise-based interventions in ACL injury incidence or modifiable risk factors in adult football players were included. 29 studies evaluating 4502 male and 1589 female players were included (15 RCT, 8 NRCT, 6 single-arm): 14 included warm-up, 7 resistance training, 4 mixed training, 3 balance, 1 core stability and 1 technique modification interventions. 6 out of 29 studies investigated the effect of interventions on ACL injury incidence, while the remaining 23 investigated their effect on risk factors. Only 21% and 13% studies evaluating risk of injury variables reported reliability measures and/or smallest worthwhile change data. Warm-up, core stability, balance and technique modification appear effective and feasible interventions to be included in football teams. However, the use of more ecologically valid tests and individually tailored interventions targeting specific ACL injury mechanisms are required.

The Relationship of Trunk Muscle Activation and Core Stability: A Biomechanical Analysis of Pilates-Based Stabilization Exercise

Pilates is an effective exercise method for rehabilitating musculoskeletal disorders as its principles are based on the activation of local muscles. This study aimed to compare the subjects with and without Pilates experience to find out the effect of the experience on the core muscle activity and muscle co-contraction, and to examine the relationship between the core muscle activation level and the kinematic data. This study involved 32 subjects, including 16 experienced Pilates practitioners and 16 non-experienced subjects. The knee stretch on the reformer was performed in three different positions: flat back with a neutral pelvis, round back with posteriorly tilted pelvis (RPP), and extended back anteriorly tilted pelvis (EAP). The electromyography of the internal oblique (IO), rectus abdominis (RA), multifidus (MU), and iliocostalis lumborum (IL) muscles were measured, as well as kinematic data from a 3D motion analysis system. Compared to the non-experienced subjects, the experienced subjects activated the IO muscles more than the RA muscles, and the most significant difference was seen in the RPP position (p < 0.05). The experienced patients activated the MU muscles more often than the IL muscles, with the most significant difference observed in the RPP position and the least significant in the EAP position (p < 0.05). All kinematic data and muscle activity (IO, IO/RA ratio, MU/IL ratio) showed significant differences between the experienced and non-experienced subjects (p < 0.05). The subjects presented a moderate correlation between muscle activation and core stability. It was confirmed that the experienced Pilates practitioners activated the abdominal and low back core muscles effectively, and the stability of the pelvis and trunk were better than that of the non-experienced participants. In addition, the better the trunk stability was maintained, the larger and more accurate movement of the mobility segment was observed.

Effect of Integrated Training on Balance and Ankle Reposition Sense in Ballet Dancers

Objective: To investigate the effects of a 6-week integrated training program on the ankle joint reposition sense and postural stability in ballet dancers. Methods: Sixteen female ballet dancers participated in the study and underwent a 6-week integrated training program consisting of plyometric, proprioception and core stability exercises along with a home program involving additional ankle muscle strengthening and stretching. The ankle joint reposition tests and the parameters of the center of pressure (COP) while performing grand-plie (deep squatting) and releve en demi-pointe (standing on balls of foot) movements were measured before and after training. Results: After 6 weeks, participants showed significantly smaller absolute ankle joint reposition errors in dorsiflexion (p = 0.031), plantarflexion (p = 0.003) and eversion (p = 0.019) compared to the pre-training measurement. Furthermore, after training, a significantly slower average COP speed at pre-equilibrium during grand-plie movement (p = 0.003) and pre-equilibrium phase of releve en demi-pointe (p = 0.023) were observed. In addition, the maximum COP displacement in the medial-lateral direction was significantly smaller at pre-equilibrium phase during grand-plie (p = 0.044) and releve en demi-pointe movements (p = 0.004) after training. Conclusions: The 6-week integrated training program improved the ankle joint reposition sense and postural control in the medial-lateral direction during grand-plie and releve en demi-pointe movements.