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- 저자 : 양진주 ( Jinjoo Yang ) (검색결과 1 건)
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마스크 종류와 피로도가 유산소 운동 시 운동학적 변인에 미치는 영향
양진주 ( Jinjoo Yang ),윤석훈 ( Sukhoon Yoon ) 한국체육대학교 체육과학연구소 2021 스포츠사이언스 Vol.39 No.3
The aim of this study was to compare the kinematic differences of the lower extremities according to the type of protective mask worn and fatigue during aerobic exercise (running). Total of 11 adult males (age: 30.4±2.8 yrs., height: 174.3±4.7 cm, weight: 74.7±10.2kg) with no history of heart disease or orthopedic disease participated in this study. All subjects were divided into three classes: not wearing a mask [WM], wearing a KF94 mask [KF94], and wearing a surgical mask [SM]. John’s protocol was applied to induce fatigue state in subject, and kinematic analysis was performed at three fatigue levels (beginning [pre] / RPE14 [mid] / RPE17 [final]) in each condition. For 3D motion analysis, 8 infrared cameras (Oqus 300, Qualisys, Sweden) were used to measure the stride length, frequency, contact time, flight time, and hip/knee/ankle joint angle changes. The results of the gait variable showed significant main effects of fatigue in stride length, contact time, flight time, and frequency (p< .05); however, the main effect of the mask did not show (p >.05). Analysis of the maximum angle of X-axis of hip, knee, and ankle angles showed significant fatigue effect not mask. As a result of this study, the two masks did not have an additional effect on fatigue both at the time when fatigue started and at the time when fatigue intensified, and these results are thought to help the general public to choose a mask to use when exercising.
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