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研究生:許郁琪
研究生(外文):Yu-ChiHsu
論文名稱:比較攀爬機與踏步機運動之動作表現
論文名稱(外文):Comparison of Movement Performance on Pinnacle Trainer vs Stepper Trainer
指導教授:蘇芳慶蘇芳慶引用關係
指導教授(外文):Fong-Chin Su
學位類別:碩士
校院名稱:國立成功大學
系所名稱:生物醫學工程學系
學門:生命科學學門
學類:生物化學學類
論文種類:學術論文
論文出版年:2014
畢業學年度:102
語文別:英文
論文頁數:64
中文關鍵詞:攀爬機踏步機運動學動力學肌肉電訊號
外文關鍵詞:Pinnacle TrainerStepper Trainerkinematicskineticselectromyography
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主動驅動攀爬機(Pinnacle Trainer, PT)為一多功能性運動器材,其特殊的軌道設計包括上下方向、前後向、以及左右向的軌跡。踏步機(Stepper Trainer, ST)同樣也為本研究使用的運動器材。攀爬機與踏步機同樣都擁有垂直面的踏板移動軌跡,且皆為閉鎖式動力鍊的運動方法。然而過去的研究當中攀爬機與踏步機並未同時探討踩踏過程中對生物力學與肌肉活化程度的影響。尤其踩踏兩台訓練機的生物力學與肌肉活化程度的表現對於正常使用機器與復健的方法可以提供重要的運動處方資訊。因此本研究目的為比較PT與ST訓練機對於年輕人在踩踏時運動學、動力學,以及肌肉活化程度的變化。本研究徵召23位健康男性受測者,排除有肌肉骨骼、心血管或是其他任何會影響動作表現的疾病。本研究使用主動驅動攀爬機與踏步機來進行踩踏訓練運動。並使用三維動作分析系統配合來完成運動學資料的收集。受試者須以每分鐘60步的速度進行踩踏且腳跟必須盡可能緊貼踏板,總共收取5次資料,每次15秒。本研究結果發現,腳踝關節矢狀面的角度在踩踏過程中均是背屈動作。由於軌道設計的不同,攀爬機在踩踏期產生顯著較大的髖關節矢狀面以及膝關節冠狀面的活動角度,膝關節內外側的關節作用力,與身體質量重心上下和左右方向的移動。攀爬機與踏步機在力矩方面的表現稍有不同。踏步機的部分在踩踏期呈現顯著較大的腳踝背曲力矩, 以及膝關節伸展和外展力矩。肌肉活化程度部分,攀爬機在踩踏末期產生較大臀中肌與內收大肌的共同收縮;踏步機在踩踏末期產生顯著較大活化程度內側腓腸肌。踏步機在踩踏過程中均產生較大的腿後腱肌群與股四頭肌群共同收縮的現象。此外,攀爬機與踏步機在踩踏過程中,身體質量重心在踩踏過程中均產生的移動現象,因此上述特性可運用在促進穩定膝關節以及改善平衡的復健運動上。
SportsArt Fitness state-of-the-art pinnacle trainer combined upward/downward, forward/backward and medial/lateral motions to provide training of both large and small muscle groups in order to improve core stability and balance. The stair stepper is an aerobic machine with pedals that move up and down in a stair-climbing fashion. The pinnacle and stepper trainer provided closed kinetic chain exercises, but with different movement patterns. It is interesting to investigate the muscle activities and biomechanical behavior of lower extremity during stepping while using the pinnacle trainer with a three-plane pedal motions and stepper trainer with sagittal plane pedal motoin, respectively. In particular, the understanding of biomechanical and electromyography performance during stepping will provide an important baseline for exercise prescriptions for normal use and rehabilitation using both trainers. Thus, the purpose of this study was to compare the differences in biomechanical behavior and electromyography during stepping between pinnacle and stepper trainers. This study recruited 23 healthy male participants excluded from musculoskeletal, cardiovascular or any other diseases which would influence the stepping movement. This study used the Pinnacle Trainer, PT; S770, SportsArt Fitness, Tainan, Taiwan, and Stepper Trainer, ST; S7100, SportsArt Fitness, Tainan, Taiwan to measure the biomechanical behavior and electromyography during stepping. Also, the motion capture system was used to record the three-dimensional trajectories of the machines and human body landmarks. Participants stepped at the consistent cadence, 60 steps per min, with foot remained in contact on the pedals as flat as possible during stepping. The motion and electromyography data were collected for 5 trials and 15 seconds per trial. The results showed that ankle dorsiflexion proceeded through whole stepping cycle for both PT and ST. Because of the three planes of pedal motions in PT, it had significant greater hip flexion/extension, knee adduction/abduction, knee lateral shear forces, and vertical and mediolateral displacements of center of mass during stepping phase than ST. Participants had different performance in joint moment in the two trainers. Participants in ST condition had significant greater ankle dorsiflexor, knee extensor and abductor moments during the stepping phase. For muscle activation, participants in PT condition had co-contraction of gluteus medius (GM) and adductor magnus (ADD) during the stepping phase; the ST had significant greater gastrocnemius medial head (GAS) activation during the stepping phase. Participants in ST conditions had greater co-contraction of hamstring and quadriceps during the step cycle. Moreover, participants in PT and ST conditions had displacements of center of mass while stepping. According to these step characteristics, PT and ST might be used for the rehabilitation exercise for improving stability of knee joint and impaired balance according to specific needs.
Contents

中文摘要 I
Abstract II
致謝 IV
Contents V
List of Tables VII
List of Figures VIII
Chapter 1 Introduction 1
1.1 Background 1
1.2 Stepping exercise 2
1.3 Muscle activation of stepping exercise 4
1.4 Biomechanics of stepping exercise 6
1.6 Motivation 8
1.7 Purpose 9
1.7.1 Hypothesis 9
Chapter 2 Materials and Methods 10
2.1 Participants 10
2.2 Equipment 11
2.2.1 Pinnacle trainer 11
2.2.2 Stepper trainer 11
2.2.3 Motion analysis system 12
2.2.4 Electromyography (EMG) 14
2.2.5 Load cell 17
2.3 Experimental procedures 18
2.3.1 Pre-experimental preparation 19
2.3.2 Static data 21
2.3.3 Dynamic data 23
2.4 Data collection and parameters calculation 24
2.4.1 Definition of coordinate system 24
2.4.2 Center of mass (COM) calculation 26
2.4.3 Kinematics 27
2.4.4 Kinetics 29
2.4.5 Muscle co-contraction index 30
2.4.6 Phase of movement 30
2.5 Statistical analysis 31
Chapter 3 Results 32
3.1 Step characteristics 32
3.2 Joint angles during stepping 33
3.3 Forces during stepping 34
3.4 Moments during stepping 35
3.5 EMG activation patterns during stepping 36
Chapter 4 Discussion 50
4.1 Step characteristics 50
4.2 Angles during stepping 51
4.3 Forces and moments during stepping 53
4.4 EMG activation patterns during stepping 56
4.5 Summary 58
4.6 Limitations 59
Chapter 5 Conclusions 60
Reference 61


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