Increases of Quadriceps Inter-Muscular Cross-Correlation and Coherence during Exhausting Stepping Exercise. - Ya-Ju Chang; Ching-Chieh Chou; Hsiao-Lung Chan; Miao-Ju Hsu; Ming-Yuh Yeh; Chia-Ying Fang; Yu-Fen Chuang; Shun-Hwa Wei; Hen-Yu Lien (Sensors, 2012)