| Summary: | 碩士 === 國立體育大學 === 運動科學研究所 === 100 === Background: The Ministry of National Defense refined the basic physical fitness testing standard in 2009. The upper extremity muscular test for female changed to 2 minutes push-up. The testing standard execute officially in 2011 with slightly modification. The new standard height of shoulder increased from the original 10cm above the ground to 25cm. Purpose: To analysis the muscular fatigue effects on executing push-ups at various heights for military females. Methods: Seventeen female R.O.C. Air Force Academy students were recruited. Subjects were asked to perform push-up exercise in various heights (Lower height was 10cm group, L); (Higher height was 25cm group, H) for 2 minutes. The surface electromyographic signals were collected while doing push-up (Arm: biceps brachii (BB), triceps brachii (TB) , deltoid (DE) ; Trunk: pectoralis major (PM), rectus abdominis (RA), latissimus dorsi (LD), erector spinae (ES) ).Two minutes working period were separated into 4 stages：0-0.5min (I), 0.5-1min (II), 1-1.5 min (III), 1.5-2 min (IV). Results: 1. The muscular fatigue of BB, TB and PM occurred in stage (II) (p<.05) in L. 2. The muscular fatigue of BB and PM occurred in stage (III) (p<.05) in H. 3. There was no significant difference between LD, DE, RA and ES in different experimental groups and stages. Conclusion: The muscular fatigue should take place earlier on BB, TB and PM in L than in H.
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