Background/Objectives: The aim of this study was to assess the effects cold water immersion (CWI) post-eccentric muscle contraction exercise on skin temperature, pain score, Maximum Voluntary Isometric Contraction (MVIC), damage, and mechanical properties. Methods: Twenty-seven male participants (age 20.6±0.6; body mass 69.4±8.1; fat % 13.7±4.3) were divided into three groups: whole CWI group (n=9), lower control (n=9). Results: Significant observed in temperature (p=.001) interactions...

[Purpose] For maximum efficiency and to prevent injury during javelin throwing, it is critical maintain muscle balance coordination of the rotator cuff glenohumeral joint. In this study, we investigated change in strength, throw distance technique throwers after they had performed a specific physical training that combined elements weight training, function movement screen core training. [Subjects] Ten participated study: six university athletes experimental group four national-level control...

[Purpose] The lunge Motion that occurs frequently in fencing training and matches results imbalance of the upper lower limbs muscles. This research focuses on improvement national team fencers Republic Korea through specific muscle training. [Subjects] subjects this were limited to right-handed male fencers. Nine male, athletes selected for study (4 epee, 5 sabre; age 28.2 ± 2.2 years; height 182.3 4.0 cm; weight 76.5 8.2 kg; experience 12.4 3.0 years). [Methods] program was performed 12...

The purpose of the study was to investigate effect an increase in sprinting velocity on anterior cruciate ligament (ACL) load, knee joint and activation femoral muscles using musculoskeletal modeling approach. Fourteen high school male athletes were recruited (age: 17.4 ± 0.7 years, height: 1.75 0.04 m, weight: 73.3 8.94 kg), with right foot dominant physical activity level about 3-4 h per day. kinematics, kinetics, co-contraction index (CCI) extensors flexors leg's calculated. load...

The purpose of this study was to investigate the differences in muscle activation patterns biceps brachii (BB) and flexor carpi radialis (FCR) muscles, while measuring resultant force (RF) at different shoulder flexion angles. [Subjects] Thirteen healthy males (age 24.85±3.4 years, weight; 77.8±7.9 kg; height, 1.7±0.05 m) were enrolled study. [Methods] measured by a transducer . elbow angle remained constant changed (30°, 45°, 60°, 75° 90°). [Results] results surface EMG show largest...

Although there is a higher prevalence of noncontact anterior cruciate ligament (ACL) injuries during direction diversion maneuver (DDM), no previous studies have reported how foot-planting strategies affect ACL loading.To investigate the effect on loading in women DDM task using musculoskeletal modeling approach.Descriptive laboratory study.A total 13 female participants performed task, which involved running at 4.5 ± 0.2 m/s and turning left 35° to 55° under strategy 3 directions: neutral,...

[Purpose] This study aimed to verify the effectiveness of an augmented reality-based ski simulator through analyzing changes in movement patterns as well engagement major muscles lower body. [Subjects] Seven subjects participated study. All were national team-level athletes studying at "K" Sports University Korea who exhibited comparable performance levels and had no record injuries preceding 6 months (Age 23.4 ± 3.8 years; Height 172.6 12.1 cm; Weight 72.3 16.2 kg; Experience 12.3 4.8...

Abstract Background This study investigated the effects of changes in motor skills from an educational video program on kinematic and kinetic variables lower extremity joints knee ligament load. Methods Twenty male participants (age: 22.2 ± 2.60 y; height: 1.70 6.2 m; weight: 65.4 7.01 kg; BMI: 23.32 2.49 $$kg/{m}^{2}$$ ) were instructed to run at 4.5 0.2 m/s a 5 m distance posterior force plate, land their foot perform cutting maneuver left. The for maneuvers consisted preparatory posture,...

The aim of our study was to investigate the effect muscle-specific fatigue quadriceps and hamstring muscles on biomechanical factors anterior cruciate ligament (ACL) injury using musculoskeletal modeling techniques during directional diversion maneuver. Fifteen female subjects performed a maneuver under three treatment conditions (quadriceps fatigue, control gait). Data from 3D motion capture system force platform were used extract anterior/posterior ACL forces two-bundle approach. A...

The purpose of this study was to investigate the effects Hoehn-Yahr scale on activation lower-extremity muscles during walking. Electromyography (EMG) analysis carried out 36 patients with Parkinson's disease in off phase medication cycle. We recorded EMG signals tibialis anterior (TA), medial gastrocnemius (MG), lateral (LG), soleus (SOL), rectus femoris (RF), vastus lateralis (VL), semitendinosus (ST) and biceps (BF) using Noraxon 16 channels system walking at preferred speed. Rectified...

We investigated the effect of prolonged running on joint kinematics and its association with stride complexity between novice elite runners. Ten marathoners eleven healthy individuals took part in a 20 min submaximal experiment at their preferred speed (PRS). A three-dimensional motion capture system was utilized to calculate alpha exponent, stride-to-stride fluctuations (SSFs), variability (SSV) spatiotemporal parameters kinematics. In results, athletes ran considerably higher PRS than...

The purpose of this study was to compare the kinematic analyses women's pole vault skills difference between skilled group (1st 8th place) and less (10th 15th who participated in IAAF World Championships Daegu 2011. To achieve goal, 16 player's conducted. Player's best performance recorded by five normal video cameras operating at 60 Hz. results through research procedures above are as follows. First, Skilled group's average step length ratio her height were longer than skilled's run-up...

The purpose of this study was to analyze the effect that various loads have on lower limb biomechanics. following variables were measured and analyzed; performance time for each phase, moments joint angles, ground reaction forces. kinematic kinetic data recorded by 2 force platforms a motion capture system while 12 healthy adults in their twenties stepped down three steps under 0%, 10%, 20% BW. Results are as follows. First, different loading conditions did not seem significantly affect...

Background: We verified results of feed forward artificial neural network (FFANN)-based ground reaction force (GRF) and moment (GRM) by combining center gravity (COG) body segment obtained using infrared camera acceleration data wearable device.Methods: Eighty undergraduate students were recruited. They performed 10 m path at their usual gait speed, contacted plate in right left feet order, 20 data. FFANN algorithm was used to predict GRF GRM COG Pearson correlation coefficient (r),...

Abstract Background: This study investigated the effects of changes in motor skills from an educational video program on kinematic and kinetic variables lower extremity joints knee ligament load. Methods: Twenty participants (age: 22.2±2.60 y; height: 1.70±6.2 m; weight: 25.4±7.01 kg) were instructed to run at 4.5±0.2 m/s a 5 m distance posterior force plate, land their foot perform cutting maneuver left. The for maneuvers consisted preparatory posture, landing orientation, gaze trunk...

목적: 본 연구의 목적은 학교체육 현장에서 활용되는 제자리멀리뛰기 동작의 신체분절별 운동학적 기여도를 분석하여 교육 시 구간별 효과적인 움직임 정보를 제공하는데 있다.BR방법: 연구참여자는 체육 전공 남학생 18명(나이: 21.43±3.21year, 신장: 174.78±3.82cm, 체중: 70.13±7.18kg)으로 선정하였다. 분석장비는 적외선 카메라 7대를 사용하였으며 동작을 총 3회씩 실시하였다. 분석구간은 준비상태에서 도약 후 양발이 지면에 닿는 순간까지로 정의하였고, 발구름, 이륙, 공중, 착지구간으로 구분하였다. 분석변인은 어깨, 엉덩, 무릎, 발목관절의 변인과 산출하였다.BR결과: 발구름구간(P1에 대한 어깨관절 각도의 기여도 53.26%, 각속도는 53.30%로 가장 높게 나타났다. 이륙구간(P2)에서는 각도 기여도가 36.23%, 무릎관절이 28.97%로 크게 공중구간(P3)에서는 42.72%, 무릎관절에서 36.19%로 착지구간(P4)에서는 무릎각도...

Objectives: The purpose of the study was to quantify lower limb foot kinematics, Center Of Mass (COM) and Pressure (COP) across three different surface terrain. Methods/Statistical Analysis: Thirty-one female walked over 7 m walkway at self-selected speed on terrain randomly A) Levelled surface, B) Soft urethane mat, C) Destabilising rock surface. A total 8 infrared motion capture cameras pressure measurement system were used record participant’s gait. As a statistical measure, one-way...

This study aimed to analyze knee ligament of load and joint moment simulate the strengthening hip abductor hamstring muscles using musculoskeletal modeling, thereby contributing decrease load.Forty participants (age: 21.85 ± 1.90 years; height: 1.76 0.06 m; body mass: 68.5 7.06 kg) were instructed run at 4.5 0.2 m/s from a 5 m distance posterior force plate, land their feet on perform cutting maneuver left. In targeted construct model with 30% increase in contraction abductor, hamstring,...