Hamstring muscles’ function deficit during overground sprinting in track and field athletes with a history of strain injury     

Ayako Higashihara  Takashi Ono  Gaku Tokutake  Rieko Kuramochi  Yasuhiro Kunita  Yasuharu Nagano 《Journal of sports sciences》2013,31(23):2744-2750

ABSTRACT

In this study, we aimed to clarify the characteristics of neuromuscular function, kinetics, and kinematics of the lower extremity during sprinting in track and field athletes with a history of strain injury. Ten male college sprinters with a history of unilateral hamstring injury performed maximum effort sprint on an athletic track. The electromyographic (EMG) activity of the long head of the biceps femoris (BFlh) and gluteus maximus (Gmax) muscles and three-dimensional kinematic data were recorded. Bilateral comparisons were performed for the EMG activities, pelvic anterior tilt angle, hip and knee joint angles and torques, and the musculotendon length of BFlh. The activity of BFlh in the previously injured limb was significantly lower than that in the uninjured limb during the late-swing phase of sprinting (p < 0.05). However, the EMG activity of Gmax was not significantly different between the previously injured and uninjured limbs. Furthermore, during the late-swing phase, a significantly more flexed knee angle (p < 0.05) and a decrease in BFlh muscle length (p < 0.05) were noted in the injured limb. It was concluded that previously injured hamstring muscles demonstrate functional deficits during the late swing phase of sprinting in comparison with the uninjured contralateral muscles.  相似文献   

Japanese Translation and Cultural Adaptation of the Listening to Mothers II Questionnaire     

Kishi R  McElmurry B  Vonderheid S  Altfeld S  McFarlin B  Tashiro J 《The Journal of perinatal education》2011,20(1):14-27

The questionnaire used for the U.S. Listening to Mothers II survey was translated and culturally adapted to measure Japanese women's experience during the period of pregnancy planning through early postpartum. Methods included expert panels and two phases of cognitive interviews with 20 postpartum Japanese adult women. The number of problems with the translated questionnaire effectively decreased in the iterative process. Most problems were found in the question-interpretation stage of cognitive processing, such as wording/tone. Culture-specific concepts and unclear items were adapted to prevent erroneous interpretations in future studies. The future use of this questionnaire to generate data sets will be useful for professionals interested in developing evidence-based practices. The knowledge from this study can be helpful in improving health-care services and education for women with diverse languages and cultural backgrounds.  相似文献