RESUMO
Purpose@#This study aimed to compare a dynamic neuromuscular training program with a static neuromuscular training program for taekwondo players. @*Methods@#This study design was a randomized control trial. Three high school taekwondo teams (taekwondo neuromuscular training [TNT] group, 22; Get Set group, 17; and control group, 24) participated in the study. Get Set group performed a program focused on the static movement, and TNT group performed a program which was modified Get Set to dynamic movement. Control group maintained the existing taekwondo training without any intervention. The intervention group performed 15-minute training three times a week for 6 weeks. Dynamic Postural Stability Index (DPSI) and time-to-boundary test (TTB) tests were performed before and after 6 weeks of training. @*Results@#As a result of DPSI, an interaction effect was observed only in the anterior/posterior stability index of the dominant leg of the TNT and Get Set groups (p＜0.05). However, there was no difference between the TNT and the Get Set groups.As a result of TTB analysis, no statistical effect was observed in all variables of the dominant and non-dominant legs. @*Conclusion@#As a result of conducting 6-week dynamic and static neuromuscular training for taekwondo athletes, the effect of training was found in both the intervention group. However, differences in training effects between groups could not be proved. Therefore, it is necessary to clearly confirm the difference between the two training through long-term follow-up studies.
RESUMO
Purpose@#Although postural control assessment in patients with chronic ankle instability (CAI) has been thoroughly examined in the literature, few researchers have studied balance strategy in lateral ankle sprain (LAS) copers, who recover from LAS injury with no symptom progression. The purpose of this study was to investigate the difference in center of pressure (COP) variables during static and dynamic posture control among LAS copers, patients with CAI, and ankle healthy controls. @*Methods@#This case-control study recruited 20 patients with CAI, 20 LAS copers, and 20 controls. All participants filled out Ankle Instability Instrument and Foot and Ankle Ability Measure questionnaire and performed single-leg static postural control and Star Excursion Balance Test (SEBT). @*Results@#LAS copers showed less mediolateral COP range as compared to patients with CAI (p=0.001) and control (p=0.001) during static postural control. Furthermore, LAS copers have less anteroposterior COP standard deviation (SD) (p=0.034), range (p=0.009), velocity (p=0.013) than patients with CAI. Relative to patients with CAI, LAS copers had small mediolateral COP SD (p=0.022) and range (p=0.018) during the posteromedial direction of the SEBT.However, there was no significant difference in both mediolateral and anteroposterior COP variables during anterior and posterolateral directions of the SEBT (p≥ 0.05). @*Conclusion@#Based on these observed results, the authors conclude that greater postural control in LAS copers is one of the movement strategies to prevent recurrent LAS as a defense mechanism.
RESUMO
Purpose@#Anterior cruciate ligament reconstruction (ACLR) is one of the most common procedures in sports medicine.It is important for patients to determine whether or not to return to the pre-operative state after the ACRL. This study is to evaluate the objective and subjective analysis of the knee joint function and to compare between injured knee and non-injured knee in those with ACLR.Methods: This cross-sectional study recruited 15 individuals with ACLR using autograft (age, 27.87±4.10 years; height, 172.56±4.81 cm; weight, 75.51±13.03 kg; time to surgery, 27.11±14.03 months). International Knee Document Committee subjective knee evaluation form and Lower Extremity Assessment Protocol (LEAP) including muscle strength, static and dynamic postural control, functional task was used to assess the knee joint function. Deficit ratio between injured knee and non-injured knee and independent t-test were used for analysis. @*Results@#Injured knee has significantly decreased isokinetic extension strength (90º/sec), isometric flexion strength and one-leg hopping distance (p＜ 0.05). @*Conclusion@#Although individuals who successfully returned to play (RTP) did not experience subjective dysfunction and pain, there are items of LEAP that indicates deficit ratio between injured knee and non-injured knee. Therefore, when considered whether and when to RTP, it is very important to assess not only subjective dysfunction and pain but also whether the patient has recovered to a level similar to that of the non-injured knee in various aspects of the knee joint.
RESUMO
PURPOSE: To investigate the alteration of lower extremity movement during maintaining balance test with their eyes closed in chronic ankle instability (CAI) patients compared to healthy group with and without plantar cutaneous sensation. METHODS: Ten healthy volunteers (age, 23.40±2.22 years; height, 165.42±6.67 cm; weight, 60.93±13.42 kg) and 10 CAI patients (age, 23.90±2.56 years; height, 166.89±10.50 cm; weight, 67.43±12.96 kg), were recruited. Subjects immersed both feet in an ice water for 10 minutes and performed three trials of a single-leg stance balance test with their eyes closed while standing on a force plate for 10 seconds. RESULTS: CAI group showed increased knee flexion, reduced knee external rotation, and hip internal rotation compared to the healthy group from single-limb stance with eyes closed after diminished plantar cutaneous sensation. However, there was no significant interaction between group and time. CONCLUSION: These findings indicate that the postural kinematic analyses revealed that individuals with CAI used different strategy of controlling their lower extremities, which alters transverse plane motion of hip and knee compared to the healthy group in order to compensate for their ankle deficits after freezing the plantar cutaneous.
Assuntos
Humanos , Tornozelo , Pé , Congelamento , Voluntários Saudáveis , Quadril , Gelo , Joelho , Extremidade Inferior , Sensação , ÁguaRESUMO
PURPOSE: This study aimed to describe the pattern of injuries and illnesses among Korean athletes during the Almaty Winter Universiade 2017. METHODS: All medical staffs of Korean team recorded the daily occurrence of injuries and illnesses sustained during the Almaty Winter Universiade Games by using a standardized online form via kociss.com. The design of this study was a prospective study. RESULTS: In total, 98 athletes (68 men and 30 women) in 11 sports events from Korean Sport Olympic Committee participated in this study. Korean medical staffs reported 40 injuries (40.8%) and 26 illnesses (26.5%), equaling incidences of 6.3 injuries and 4.1 illnesses per 100 athletes. Men suffered more injury and illness than women (44.1% vs. 33.3%). The rate of Injury and illness in training was higher than the competition (13.3 vs. 2.0 athlete exposures). The risk of an athlete being injured was the highest in freestyle skiing, followed by snowboard and speed skating. Overall, the main common type and location of injury was the joint or ligaments sprain (13.3%) and knee (7.1%). The rate of main illness was 17.3% of the respiratory system with the main symptom of pain and the main cause of environment (22.4%). CONCLUSION: Injuries and illnesses occurred 40.8% and 26.5% during this winter game, and were higher during training than a competition. Based on the epidemiologic data of this study, it could provide the source for the injury prevention and improving the performance of the athlete and further develop scientific injury and illness surveillance systems.