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Hamstring injuries in sprinting.

Van Don, Birgitta Johanna.

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Hamstring injuries in sprinting.

紀錄類型:	書目-電子資源 : Monograph/item
正題名/作者:	Hamstring injuries in sprinting./
作者:	Van Don, Birgitta Johanna.
面頁冊數:	187 p.
附註:	Source: Dissertation Abstracts International, Volume: 59-09, Section: B, page: 4952.
Contained By:	Dissertation Abstracts International59-09B.
標題:	Engineering, Biomedical. -
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=9904364
ISBN:	0599023449

Hamstring injuries in sprinting.
Van Don, Birgitta Johanna.

Hamstring injuries in sprinting. - 187 p.

Source: Dissertation Abstracts International, Volume: 59-09, Section: B, page: 4952.

Thesis (Ph.D.)--The University of Iowa, 1998.

Sprinters show an especially high incidence of hamstring injuries. Knowledge concerning the instant at which in the sprint cycle a hamstring strain is most likely to occur would be very helpful for the athletes and coaches. The possible causes of such injury include muscle fiber strain, contraction velocity, force developed and work. The biceps femoris long head (BFL) was found clinically to be the muscle most often injured.

ISBN: 0599023449Subjects--Topical Terms:

1017684
Engineering, Biomedical.

Hamstring injuries in sprinting.
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100 1 $a Van Don, Birgitta Johanna. $3 1906328
245 1 0 $a Hamstring injuries in sprinting.
300 $a 187 p.
500 $a Source: Dissertation Abstracts International, Volume: 59-09, Section: B, page: 4952.
500 $a Supervisors: James G. Hay; Warren G. Darling.
502 $a Thesis (Ph.D.)--The University of Iowa, 1998.
520 $a Sprinters show an especially high incidence of hamstring injuries. Knowledge concerning the instant at which in the sprint cycle a hamstring strain is most likely to occur would be very helpful for the athletes and coaches. The possible causes of such injury include muscle fiber strain, contraction velocity, force developed and work. The biceps femoris long head (BFL) was found clinically to be the muscle most often injured.
520 $a The purpose of this study was to test the hypothesis that during sprinting, the BFL is the muscle of the hamstring muscle group that develops greater lengthening and faster lengthening velocities of the muscle fibers while at high activation levels than do the semimembranosus (SM), semitendinosus (ST) and biceps femoris short head (BFS).
520 $a Ten female and five male athletes oerved as subjects. One sprint cycle was recorded for each subject. The positions of the anterior superior iliac spine (ASIS) and of the hip, knee and ankle joint were determined. A muscle model was developed to obtain the anatomical strain and anatomical strain rate of the muscle fibers. Muscle activation levels were recorded using telemetric techniques.
520 $a It was concluded that: (a) The BFL experienced the greatest anatomical strain, caused by the geometry of the muscle and the location of its origin and insertion. The greater anatomical strain is one potential cause of the greater rate of injury of this muscle compared to the other hamstring muscles in sprinters; (b) Similar maximum anatomical strain rates were recorded for the BFL and SM. These muscles lengthened at greater rates than did the ST and BFS. Thus, it could not be concluded that the greater rate of injury of the BFL is due to greater anatomical strain rates; (c) No differences were found between the % EMG at the instant of maximum anatomical strain and anatomical strain rate for the bi-articular hamstring muscles. Thus, could not be concluded that the greater rate of injury of the BFL is due to a distinctly higher activation of this muscle during sprinting.
590 $a School code: 0096.
650 4 $a Engineering, Biomedical. $3 1017684
650 4 $a Biophysics, General. $3 1019105
650 4 $a Applied Mechanics. $3 1018410
650 4 $a Biology, Anatomy. $3 1021727
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690 $a 0786
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690 $a 0287
710 2 0 $a The University of Iowa. $3 1017439
773 0 $t Dissertation Abstracts International $g 59-09B.
790 1 0 $a Hay, James G., $e advisor
790 1 0 $a Darling, Warren G., $e advisor
790 $a 0096
791 $a Ph.D.
792 $a 1998
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=9904364