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한국운동역학회> 한국운동역학회지> 훈련 시뮬레이터를 이용한 스키점프 도약 시 발생되는 EMG 패턴 분석 - 스키점프 유소년 국가대표 사례 연구 -

KCI등재

훈련 시뮬레이터를 이용한 스키점프 도약 시 발생되는 EMG 패턴 분석 - 스키점프 유소년 국가대표 사례 연구 -

Analysis of EMG Patterns during Ski Jumping using Training Simulator - Case Study for Ski Jumping Youth National Athletes -

Heungsoo Kim , Sukhoon Yoon
  • : 한국운동역학회
  • : 한국운동역학회지 32권2호
  • : 연속간행물
  • : 2022년 06월
  • : 43-48(6pages)
한국운동역학회지

DOI


목차

INTRODUCTION
METHOD
RESULTS
DISCUSSION
CONCLUSION
REFERENCES

키워드 보기


초록 보기

Objective: The purpose of this study was to verify the effectiveness among simulating ski jumping trainings by comparing with actual ski jump.
Method: Three healthy youth national athletes were recruited for this study (age: 13.70 ± 0.9 yrs, height: 169.30 ± 0.9 cm, jumping caree: 5.3 ± 0.9 yrs). Participants were asked to performed ski jumping with 3 simulating and one actual situation. A 3-dimensional motion analysis with 5 channels of EMG was performed in this study. Muscle activations of Rectus Femoris [RF], Tibialis Anterior [TA], Thoracis [TH], Gluteus maximus [GM], and Gastronemius [GL] were achieved with sampling rate of 2,000 Hz during each jump.
Results: In the case of S1 in the actual jumping motion, the deviation of the muscle activity peak did not appear each trial, and the jump timing was consistent. For S2, the timing of the muscles peak activation which can maintain the posture of the upper body and ankles appeared at the beginning. In the case of S3, the part maintaining the ankle posture at the beginning appeared, but it could be expected that it would progress in the vertical direction due to the activation of GL at the time of jumping.
Conclusion: The muscle activation peak before the take-off point showed a different pattern for each athlete, and individual differences were large. In addition, it was attempted to confirm the actual jump with simulation jump, and it was found that not only the difference in patterns but also the fluctuations in the timing of each muscle activation peak were large.

UCI(KEPA)

간행물정보

  • : 예체능분야  > 체육학
  • : KCI등재
  • :
  • : 계간
  • : 1226-2226
  • : 2093-9752
  • : 학술지
  • : 연속간행물
  • : 1992-2022
  • : 1229


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32권2호(2022년 06월) 수록논문
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KCI등재

1유연성 평발인 남성의 보행 시 족궁지지대의 강도가 보행특성에 미치는 영향 - 발목관절을 중심으로 -

저자 : Subin Park , David Michael O'sullivan , Jungho Lee

발행기관 : 한국운동역학회 간행물 : 한국운동역학회지 32권 2호 발행 연도 : 2022 페이지 : pp. 37-42 (6 pages)

다운로드

(기관인증 필요)

초록보기

Objective: The aim of this study is to analyze the effect of the strength of the ankle support on the walking characteristics and ankle joints when men with flexible flat feet walk.
Method: 13 adult male subjects (age: 23.9 ± 2.4 yrs, height: 173.0 ± 5.0 cm, weight: 76.9 ± 13.2 kg, Navicular Drop Test (NDT): 10.2 ± 0.8 mm) participated in this study. Each participant had to walk with the 3 conditions, barefoot, soft arch support and hard arch support, along a walkway while their kinematics was recorded at 100 Hz.
Results: Based on the results of this study, it is considered that men with flexible flat feet should use hard arch support rather than bare feet to induce normal arch shape, relieve foot damage caused by excessive ankle joint abnormalities and improve stability.
Conclusion: Our results for men with flat flexibility, there was a significant difference in the value of step length when walking was performed using two arch supports with different strengths. The angle of ankle dorsiflexion was significantly increased, and the ankle eversion angle was significantly decreased.

KCI등재

2훈련 시뮬레이터를 이용한 스키점프 도약 시 발생되는 EMG 패턴 분석 - 스키점프 유소년 국가대표 사례 연구 -

저자 : Heungsoo Kim , Sukhoon Yoon

발행기관 : 한국운동역학회 간행물 : 한국운동역학회지 32권 2호 발행 연도 : 2022 페이지 : pp. 43-48 (6 pages)

다운로드

(기관인증 필요)

초록보기

Objective: The purpose of this study was to verify the effectiveness among simulating ski jumping trainings by comparing with actual ski jump.
Method: Three healthy youth national athletes were recruited for this study (age: 13.70 ± 0.9 yrs, height: 169.30 ± 0.9 cm, jumping caree: 5.3 ± 0.9 yrs). Participants were asked to performed ski jumping with 3 simulating and one actual situation. A 3-dimensional motion analysis with 5 channels of EMG was performed in this study. Muscle activations of Rectus Femoris [RF], Tibialis Anterior [TA], Thoracis [TH], Gluteus maximus [GM], and Gastronemius [GL] were achieved with sampling rate of 2,000 Hz during each jump.
Results: In the case of S1 in the actual jumping motion, the deviation of the muscle activity peak did not appear each trial, and the jump timing was consistent. For S2, the timing of the muscles peak activation which can maintain the posture of the upper body and ankles appeared at the beginning. In the case of S3, the part maintaining the ankle posture at the beginning appeared, but it could be expected that it would progress in the vertical direction due to the activation of GL at the time of jumping.
Conclusion: The muscle activation peak before the take-off point showed a different pattern for each athlete, and individual differences were large. In addition, it was attempted to confirm the actual jump with simulation jump, and it was found that not only the difference in patterns but also the fluctuations in the timing of each muscle activation peak were large.

KCI등재

3지면환경이 크로스핏 선수의 프론트 스쿼트에 미치는 영향

저자 : Yootae Jang , Sukhoon Yoon

발행기관 : 한국운동역학회 간행물 : 한국운동역학회지 32권 2호 발행 연도 : 2022 페이지 : pp. 49-55 (7 pages)

다운로드

(기관인증 필요)

초록보기

Objective: This study aims to verify the front squat motions using by two different surfaces, thereby elucidating the grounds for effective training environment that can minimize the risk of injury.
Method: Total of 10 healthy male crossfit athletes were recruited for this study (age: 32.30 ± 3.05 yrs., height: 173.70 ± 5.12 cm, body mass: 82.40 ± 6.31 kg, 1RM: 160 ± 13.80 kg). All participants are those who know how to do front squats well with more than five years of crossfit athlete experience. All participants have sufficient experience in front squats on two types of surface which are soft surface (SS) and hard surface (HS). In each surface, participant perform 10reps of the front squat with 80% of the pre-measured 1RM. A 3-dimensional motion analysis with 8 infrared cameras and 2 channels of EMG was performed in this study. Paired sample t-test was used for statistical verification between two surfaces. The significant level was set at α=.05.
Results: The significantly decreased rectus femoris muscle activation was found in SS compared with that of HS on phase 1 (p<.05). Also, ROM of ankle joint was significantly increased in the SS compare with that of HS on phase 1 (p<.05). The muscle activity ratio of gluteus maximus/rectus femoris showed a significant difference only in SS compared with that of HS on phase 1 (p<.05).
Conclusion: In conclusion, Korean crossfit boxes should consider the use of hard surface, which has a relatively less risk of injury than soft surface, in selecting flooring materials. For the Crossfit athletes, they are also considered appropriate to train on a relatively hard surface.

KCI등재

4호르몬 대체 요법 제공이 폐경기 이후 여성들의 운동기능에 미치는 영향: 체계적 문헌고찰 및 메타분석 연구

저자 : Hanall Lee , Young-min Park , Nyeonju Kang

발행기관 : 한국운동역학회 간행물 : 한국운동역학회지 32권 2호 발행 연도 : 2022 페이지 : pp. 56-68 (13 pages)

다운로드

(기관인증 필요)

초록보기

Objective: The purpose of this systematic review and meta-analysis was to investigate potential effects of HRT (hormone replacement therapy) on motor functions in postmenopausal women.
Method: In this meta-analysis, 19 studies that examined changes in motor functions between postmenopausal women with and without HRT intervention were qualified. We additionally conducted moderator variable analyses including: (1) motor function type, (2) hormone type, and (3) duration of HRT intervention.
Results: The random effects model showed no significant overall effects (SMD = 0.199; SE = 0.115; 95% CI = -0.026~0.425; Z = 1.730; p = 0.084; I2 = 93.258%). Additional three moderator variable analyses revealed no significant effect sizes indicating that specific HRT protocols did not improve different motor functions in postmenopausal women.
Conclusion: These meta-analytic findings suggest that HRT had no positive effects on motor functions in postmenopausal women.

1
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KCI등재

1유연성 평발인 남성의 보행 시 족궁지지대의 강도가 보행특성에 미치는 영향 - 발목관절을 중심으로 -

저자 : Subin Park , David Michael O'sullivan , Jungho Lee

발행기관 : 한국운동역학회 간행물 : 한국운동역학회지 32권 2호 발행 연도 : 2022 페이지 : pp. 37-42 (6 pages)

다운로드

(기관인증 필요)

초록보기

Objective: The aim of this study is to analyze the effect of the strength of the ankle support on the walking characteristics and ankle joints when men with flexible flat feet walk.
Method: 13 adult male subjects (age: 23.9 ± 2.4 yrs, height: 173.0 ± 5.0 cm, weight: 76.9 ± 13.2 kg, Navicular Drop Test (NDT): 10.2 ± 0.8 mm) participated in this study. Each participant had to walk with the 3 conditions, barefoot, soft arch support and hard arch support, along a walkway while their kinematics was recorded at 100 Hz.
Results: Based on the results of this study, it is considered that men with flexible flat feet should use hard arch support rather than bare feet to induce normal arch shape, relieve foot damage caused by excessive ankle joint abnormalities and improve stability.
Conclusion: Our results for men with flat flexibility, there was a significant difference in the value of step length when walking was performed using two arch supports with different strengths. The angle of ankle dorsiflexion was significantly increased, and the ankle eversion angle was significantly decreased.

KCI등재

2훈련 시뮬레이터를 이용한 스키점프 도약 시 발생되는 EMG 패턴 분석 - 스키점프 유소년 국가대표 사례 연구 -

저자 : Heungsoo Kim , Sukhoon Yoon

발행기관 : 한국운동역학회 간행물 : 한국운동역학회지 32권 2호 발행 연도 : 2022 페이지 : pp. 43-48 (6 pages)

다운로드

(기관인증 필요)

초록보기

Objective: The purpose of this study was to verify the effectiveness among simulating ski jumping trainings by comparing with actual ski jump.
Method: Three healthy youth national athletes were recruited for this study (age: 13.70 ± 0.9 yrs, height: 169.30 ± 0.9 cm, jumping caree: 5.3 ± 0.9 yrs). Participants were asked to performed ski jumping with 3 simulating and one actual situation. A 3-dimensional motion analysis with 5 channels of EMG was performed in this study. Muscle activations of Rectus Femoris [RF], Tibialis Anterior [TA], Thoracis [TH], Gluteus maximus [GM], and Gastronemius [GL] were achieved with sampling rate of 2,000 Hz during each jump.
Results: In the case of S1 in the actual jumping motion, the deviation of the muscle activity peak did not appear each trial, and the jump timing was consistent. For S2, the timing of the muscles peak activation which can maintain the posture of the upper body and ankles appeared at the beginning. In the case of S3, the part maintaining the ankle posture at the beginning appeared, but it could be expected that it would progress in the vertical direction due to the activation of GL at the time of jumping.
Conclusion: The muscle activation peak before the take-off point showed a different pattern for each athlete, and individual differences were large. In addition, it was attempted to confirm the actual jump with simulation jump, and it was found that not only the difference in patterns but also the fluctuations in the timing of each muscle activation peak were large.

KCI등재

3지면환경이 크로스핏 선수의 프론트 스쿼트에 미치는 영향

저자 : Yootae Jang , Sukhoon Yoon

발행기관 : 한국운동역학회 간행물 : 한국운동역학회지 32권 2호 발행 연도 : 2022 페이지 : pp. 49-55 (7 pages)

다운로드

(기관인증 필요)

초록보기

Objective: This study aims to verify the front squat motions using by two different surfaces, thereby elucidating the grounds for effective training environment that can minimize the risk of injury.
Method: Total of 10 healthy male crossfit athletes were recruited for this study (age: 32.30 ± 3.05 yrs., height: 173.70 ± 5.12 cm, body mass: 82.40 ± 6.31 kg, 1RM: 160 ± 13.80 kg). All participants are those who know how to do front squats well with more than five years of crossfit athlete experience. All participants have sufficient experience in front squats on two types of surface which are soft surface (SS) and hard surface (HS). In each surface, participant perform 10reps of the front squat with 80% of the pre-measured 1RM. A 3-dimensional motion analysis with 8 infrared cameras and 2 channels of EMG was performed in this study. Paired sample t-test was used for statistical verification between two surfaces. The significant level was set at α=.05.
Results: The significantly decreased rectus femoris muscle activation was found in SS compared with that of HS on phase 1 (p<.05). Also, ROM of ankle joint was significantly increased in the SS compare with that of HS on phase 1 (p<.05). The muscle activity ratio of gluteus maximus/rectus femoris showed a significant difference only in SS compared with that of HS on phase 1 (p<.05).
Conclusion: In conclusion, Korean crossfit boxes should consider the use of hard surface, which has a relatively less risk of injury than soft surface, in selecting flooring materials. For the Crossfit athletes, they are also considered appropriate to train on a relatively hard surface.

KCI등재

4호르몬 대체 요법 제공이 폐경기 이후 여성들의 운동기능에 미치는 영향: 체계적 문헌고찰 및 메타분석 연구

저자 : Hanall Lee , Young-min Park , Nyeonju Kang

발행기관 : 한국운동역학회 간행물 : 한국운동역학회지 32권 2호 발행 연도 : 2022 페이지 : pp. 56-68 (13 pages)

다운로드

(기관인증 필요)

초록보기

Objective: The purpose of this systematic review and meta-analysis was to investigate potential effects of HRT (hormone replacement therapy) on motor functions in postmenopausal women.
Method: In this meta-analysis, 19 studies that examined changes in motor functions between postmenopausal women with and without HRT intervention were qualified. We additionally conducted moderator variable analyses including: (1) motor function type, (2) hormone type, and (3) duration of HRT intervention.
Results: The random effects model showed no significant overall effects (SMD = 0.199; SE = 0.115; 95% CI = -0.026~0.425; Z = 1.730; p = 0.084; I2 = 93.258%). Additional three moderator variable analyses revealed no significant effect sizes indicating that specific HRT protocols did not improve different motor functions in postmenopausal women.
Conclusion: These meta-analytic findings suggest that HRT had no positive effects on motor functions in postmenopausal women.

1
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