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Influence of extra mass on performan...

Kim, Young-Kwan.

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Influence of extra mass on performance and inter-segmental coordination in open kinetic chain motions.

紀錄類型:	書目-語言資料,印刷品 : Monograph/item
正題名/作者:	Influence of extra mass on performance and inter-segmental coordination in open kinetic chain motions./
作者:	Kim, Young-Kwan.
面頁冊數:	139 p.
附註:	Source: Dissertation Abstracts International, Volume: 69-03, Section: B, page: 1721.
Contained By:	Dissertation Abstracts International69-03B.
標題:	Applied Mechanics. -
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3304854
ISBN:	9780549520146

Influence of extra mass on performance and inter-segmental coordination in open kinetic chain motions.
Kim, Young-Kwan.

Influence of extra mass on performance and inter-segmental coordination in open kinetic chain motions. - 139 p.

Source: Dissertation Abstracts International, Volume: 69-03, Section: B, page: 1721.

Thesis (Ph.D.)--Arizona State University, 2008.

This dissertation investigated the influence of extra mass in open kinetic chain motions and applied results of fundamental studies to a new form of baseball bat swing warm-up (i.e., the overloaded arm warn-up). Fundamental studies of the horizontal arm swing (Study 1 and 2) provided mechanical justification for using extra mass. Study 1 (kinematic approach) found the forearm extra mass reduced the arm swing speed significantly but the upper arm extra mass did not affect it much according to the increased extra mass. The change of the moment of inertia (MOI) was speculated to be a main factor determining the performance of limb dynamics. Study 2 (kinetic approach) illustrated the different control strategy of the CNS at each joint and provided justification on results of Study 1. The detrimental effect of the forearm extra mass was primarily attributed to the counteractive interaction torque and the significantly increased MOI due to its location. However, the upper arm extra mass would be beneficial to the arm swing speed when a decent amount (25 to 50% of upper arm mass) was decided. In Study 3, even though the after-effect of the overloaded arm warm-up was not statistically significant, it showed the possibility of the bat speed improvement. The overloaded bat was not beneficial to the bat speed. Baseball players should be careful on a significant bat speed drop at the first trial immediately after loaded warm-ups.

ISBN: 9780549520146Subjects--Topical Terms:

1018410
Applied Mechanics.

Influence of extra mass on performance and inter-segmental coordination in open kinetic chain motions.
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