[논문]골프스윙, 드롭랜딩, 컷팅 동작 시 슬관절 모멘트 분석

김기현; 임영태; 박준성

doi:10.12925/jkocs.2020.37.2.296

골프스윙, 드롭랜딩, 컷팅 동작 시 슬관절 모멘트 분석
Knee Joint Moment during Golf Swing, Drop-landing, and Cutting Maneuver 원문보기

Journal of the Korean Applied Science and Technology = 한국응용과학기술학회지, v.37 no.2, 2020년, pp.296 - 302

김기현 (건국대학교 스포츠과학과) , 임영태 (건국대학교 골프산업전공) , 박준성 (건국대학교 스포츠융복합연구소)

Abstract ▼ AI-Helper

The purpose of this study was to assess knee joint loading in the target knee during a golf swing compared to loading rates of high impact activities such as cutting and drop landings. Nine healthy competitive golfers completed golf swings with the target foot both straight and externally rotated 30 degrees, as well as drop landings and cutting maneuvers. Motion capture data was collected at 240 Hz and ground reaction force data was collected at 2400 Hz. The frontal and transverse knee moments were examined using repeated measures ANOVA through SPSS. The abduction moments were higher in golf swings as compared to the other high impact activities (p=.010), while the external rotation moments were lower (p=.003). There were no significant differences between externally rotated and neutral golf swings. These results suggest moments applied to the knee during a golf swing are similar to those applied during a high impact activity.

주제어

표/그림 (2)

그림 Fig. 1. The position of the ground reaction force of golf swing, drop-landing, and cutting maneuver.
표 Table 1. Knee moment during golf swing, drop-landing, and cutting Unit: N/m

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문제 정의

Therefore, the goal of this study is to quantify the peak internal and external rotation knee moments as well as the abduction and adduction moments on the target knee of elite golfers during the golf swing either 30° externally rotated or in a neutral foot position.

가설 설정

Therefore, the goal of this study is to quantify the peak internal and external rotation knee moments as well as the abduction and adduction moments on the target knee of elite golfers during the golf swing either 30° externally rotated or in a neutral foot position. It is hypothesized that the frontal-plane knee moments during golf swings would be similar to those during drop-landing but smaller than those during a cutting maneuver, and that the knee moments in the transverse plane during a golf swing would be greater than those during both the drop-landing and cutting. It is also hypothesized that externally rotating the target foot would result in a reduction of frontal and transverse plane knee moments and a decrease of mechanical loadings in the knee during a golf swing.

제안 방법

Additionally, participants must not have had any history of knee injury to either leg that may have resulted in knee motion adaption or any lower extremity musculoskeletal injury within the past twelve months. Before participating, each subject read and signed an informed consent form and completed a health history questionnaire.
Following an individualized golf warm-up consisting of practice golf swings and walking, each subject completed five golf swings using a 7-iron with the target foot in a neutral/straight position, five golf swings with the target foot 30° externally rotated, five drop landings from 80% of maximal jump height[9], five cuts at a 45° angle to right, as well as five cuts at a 45° angle to the left[10]. During the collection, two AMTI force plates were used to monitor the ground reaction forces under the feet while collecting at 2400 Hz (AMTI, Inc., Watertown, MA, USA). For all activities the same standard athletic footwear was used, except for during the golf swings in which participants wore their own golf shoes as artificial turf covered the force plates.
Each subject had a modified plug-in gait model marker set, including both upper and lower extremity markers, placed on anatomical landmarks to be used with a 12 camera VICON motion capture system collecting at 240 Hz (Vicon, Los Angeles, CA, USA). Four additional retro-reflective markers were placed on the golf club at the head, base of shaft, handle, and toe.
Following an individualized golf warm-up consisting of practice golf swings and walking, each subject completed five golf swings using a 7-iron with the target foot in a neutral/straight position, five golf swings with the target foot 30° externally rotated, five drop landings from 80% of maximal jump height[9], five cuts at a 45° angle to right, as well as five cuts at a 45° angle to the left[10].
It is also hypothesized that externally rotating the target foot would result in a reduction of frontal and transverse plane knee moments and a decrease of mechanical loadings in the knee during a golf swing. Information obtained from this study could help researchers identify the risk of overuse knee conditions associated with golfers and help coaches develop modified swing techniques to reduce the risk of injury.

대상 데이터

Nine healthy competitive golfers, 7 female (age: 20.00±1.15 years, height: 1.69±.03 meters, body wight: 61.26±6.75 kg, carrier: 4.50±0.96 years) and 2 male (age: 21.00±0.00 years, height: 1.81±.140 meters, body wight: 77.85±18.87 kg, carrier: 4.50±1.50 years) were recruited for this study.

성능/효과

The main findings of this study are that in both the frontal and transverse planes the knee moments in golf swings are similar to, or, in some instances, such as knee abduction moment, greater than those associated with high impact activities such as cutting and drop-landing. While the broadening of knee overuse and degenerative conditions has been linked to alteration in frontal plane knee moment, these findings may also implicate moments in the transverse plane and further call into question the label of golf as a non-impact sport suitable for all ages due to the high amounts of loading seen in the knee.

후속연구

Future studies should further investigate swing mechanics between these two foot positions during a golf swing to determine the differences in knee joint moments. Future studies should also focus on examining knee contact forces during a golf swing using modeling techniques.
This finding may alleviate concerns for golfers who may have felt pressured to alter foot position from their preferred golfing setup. Future studies should further investigate swing mechanics between these two foot positions during a golf swing to determine the differences in knee joint moments. Future studies should also focus on examining knee contact forces during a golf swing using modeling techniques.

참고문헌 (16)

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상세보기
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