Reliability and Validity of the Kinect-Based Mixed Reality Device: Pilot Study
안소영, Sung Yun-Ho, 배준현, 임병걸, 송욱,
소속 상세정보
안소영 ( Ahn So-Young )
Seoul National University Department of Physical Education
( Sung Yun-Ho )
Seoul National University Department of Physical Education
배준현 ( Bae Jun-Hyun )
Seoul National University Department of Physical Education
임병걸 ( Lim Byung-Gul )
Seoul National University Department of Physical Education
송욱 ( Song Wook )
Seoul National University Department of Physical Education
Abstract
OBJECTIVES: Firefighter (FF) is an occupation which needs high fitness abilities. However, most of Korean FFs in the capital city have relatively low fitness levels and they have difficulty participating in exercises owing to their emergency environments. Kinect-based mixed reality device (KMR) is a device that can deliver exercises with live visual feedbacks by detecting motions at any time while needing few human resources. Therefore, KMR could be an adequate tool for FFs to provide exercise. However, there are no studies that identified the reliability and validity. So, the purpose of this study is to evaluate the reliability and validity of KMR and the intensity of the fitness program for relatively low-fit FFs.
METHODS: Using a test-retest design, five male participants underwent three trials with 1wk washouts. The participants underwent 1 screening and 2 workout sessions. The fitness program using KMR last approximately 25 min. Intensity was measured using the heart rate (HR), rated perceived exertion (RPE), and finger-tip lactate. HR and RPE were measured before, during, and after the exercise using the Polar watch and Borg scale. Finger-tip lactate were measured before and after the exercise using Lactate Pro2. Cronbach alpha and Pearson correlation were determined for reliability and validity based on the HR and RPE.
RESULTS: Excellent reliability (Cronbach alpha: 0.967, 0.969) and strong correlation (r = .525 ? .814, .718 ? .958; very large) were observed with regard to the HR and RPE. Additionally, HR, RPE, and post-workout lactate showed a moderate-to-high intensity response in exercise program. Conclusions: The results suggest that KMR is a reliable and validate device to provide fitness programs and the fitness program designed for relatively low-fit FFs showed a “moderate-to-high” intensity response, which is an adequate physiological response for relatively low-fit Korean FFs.
키워드
Feedback; Kinect; Mixed Reality; Reliability; Validity
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