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Kyung-eun Lee, Seung-min Baik, Chung-hwi Yi, Oh-yun Kwon, and Heon-seock Cynn

side bridge exercises on hip and trunk muscle activity in patients with various conditions. 6 , 7 , 10 , 11 Boren et al 10 reported that the side bridge exercise with hip abduction showed the highest percentage of maximal voluntary isometric contraction (%MVIC) for Gmed activation (103% MVIC) in

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Graham E. Caldwell and Li Li

In this commentary we question whether the relationship between muscle activity and joint moments is the same for natural motor tasks as for controlled experimental situations. An important consideration in this regard is the identification of the correct electromechanical delay (EMD) for comparing EMG and joint moment data. Data from recent cycling studies are used to illustrate the importance of EMD, and how changing task constraints can alter the relation between muscle activity and joint moment balance for bi-articular antagonist pairs.

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Xin He, Hio Teng Leong, On Yue Lau, Michael Tim-Yun Ong, and Patrick Shu-Hang Yung

rate of a second ACL injury. 7 , 8 To prevent ACL reinjury, the knee joint must be stabilized and protected by the passive restraint (ligaments) and the active restraint (muscles). However, deficits in muscle strength, muscle activity, and motor control can be found after ACLR. 9 – 11 Despite the

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Ju-Yul Yoon, Seung-Rok Kang, Hye-Seong Kim, Yu Hui Won, Sung-Hee Park, Jeong-Hwan Seo, Myoung-Hwan Ko, and Gi-Wook Kim

the efficacy of treatment. Vibration prescriptions are determined by adjusting each component 2 , 3 ; when the exercise type, amplitude, and frequency of WBVT are adjusted, the effects of the therapy on muscle activity, 5 – 7 oxygen consumption (VO 2 ), 8 , 9 and fatigue recovery differ. 10

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Billy Chun-Lung So, Man-Ying Kwok, Yin-Leuk Chan, Hing-Fung Kevin Lam, Hei-Tung Hilda Chang, Tsz-Kit Chan, Chi-Yin Ken Leung, and Hon-Ting Tse

reported alterations to muscle activity of vastus medialis, rectus femoris (RF), gastrocnemius, and tibialis anterior during ATM running in healthy individuals. Furthermore, Mantashloo et al 12 identified differences in gait symmetry index, ground reaction force, and muscle activity between ACL-R and

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Neal R. Glaviano, Ashley N. Marshall, L. Colby Mangum, Joseph M. Hart, Jay Hertel, Shawn Russell, and Susan Saliba

are a consequence of PFP. Finding therapeutic interventions that specifically target these impairments, such as improving lower-extremity movement patterns and muscle activity during pain provoking tasks like squatting and stair ambulation, may improve overall outcomes in rehabilitation. Females with

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Il-young Yu, Dong-kyu Lee, Myoung-Joo Kang, and Jae-seop Oh

Blackburn et al 14 found that prone external rotation with horizontal abduction (PER) was the most effective exercise for the infraspinatus muscle, producing 72% of maximal voluntary isometric contraction (MVIC). Ballantyne et al 15 also reported that infraspinatus muscle activity was the highest during

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Chi-Whan Choi, Jung-Wan Koo, and Yeon-Gyu Jeong

significantly at play in local lateral support without changing length, suggesting that it contracts practically isometrically. 7 Furthermore, previous research suggested that the muscle activity of QL increased its activation level together with EO and IO as more stability was required during a special

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Kerri A. Graber, Kari L. Loverro, Mark Baldwin, Erika Nelson-Wong, Joshua Tanor, and Cara L. Lewis

walking while carrying a unilateral handheld weight affects hip and trunk muscle activity, hip, pelvic, and trunk kinematics, and hip joint moments. We hypothesized that walking with a unilateral weight would result in increased muscle activity contralateral to, but not ipsilateral to, the weight. We also

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Javad Sarvestan, Alan R. Needle, Peyman Aghaie Ataabadi, Zuzana Kovačíková, Zdeněk Svoboda, and Ali Abbasi

tibialis anterior, and the PL (14 g, 27- × 37- × 13-mm dimension, 0.5-mm contact dimension, 11-mV input range, 20–450 Hz bandwidth, Trigno ™ Wireless Systems; Delsys Inc, Natick, MA) to record the muscle activity with a sampling frequency of 1000 Hz (Figure  1 ). 29 To decrease the effects of intersensor