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The Effect of Load on the Kinetics a...

Sullivan, Michael.

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The Effect of Load on the Kinetics and Kinematics of the Lower Extremity During Landing.

紀錄類型:	書目-電子資源 : Monograph/item
正題名/作者:	The Effect of Load on the Kinetics and Kinematics of the Lower Extremity During Landing./
作者:	Sullivan, Michael.
出版者:	Ann Arbor : ProQuest Dissertations & Theses, : 2021,
面頁冊數:	39 p.
附註:	Source: Masters Abstracts International, Volume: 83-02.
Contained By:	Masters Abstracts International83-02.
標題:	Biomechanics. -
電子資源:	https://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=28410597
ISBN:	9798522906108

The Effect of Load on the Kinetics and Kinematics of the Lower Extremity During Landing.
Sullivan, Michael.

The Effect of Load on the Kinetics and Kinematics of the Lower Extremity During Landing. - Ann Arbor : ProQuest Dissertations & Theses, 2021 - 39 p.

Source: Masters Abstracts International, Volume: 83-02.

Thesis (M.S.)--Illinois State University, 2021.

This item must not be sold to any third party vendors.

Purpose: To understand the differences in the lower extremity kinetics and kinematics as load increases during jump landings. Methods: Ten male participants (20.4 years ± 2.41 years, 108.8kg ± 14.02kg) took part in two testing sessions. The first testing session involved testing each participant's 1-repetition max in the hexagonal barbell deadlift. The second testing session involved the data collection of the jumping trials for each participant. Participants performed their countermovement jumps under seven randomized conditions. Six of the conditions involved the hex bar using loads equivalent to 10, 20, 30, 40, 50, and 60% estimated 1-repetition max of the hexagonal barbell deadlift. The seventh condition was an unloaded (bodyweight or 0%) countermovement jump. Peak values for joint powers, moments, angles, and velocities were recorded for the ankle, knee, and hip for all participants and conditions. A repeated measures ANOVA was used to compare differences among results. Results: Significant differences (p < .05) were found in the joint powers and moments but no differences were found in any condition or joint for the peak angles or velocities. The greatest absolute values for both the peak powers and moments were found at the unloaded condition and decreased as load increased. Conclusion: This investigation has largely supported the previous research that has been done regarding loaded landings. The current findings support the previous notions that jump heights and joint velocity seem to have direct effect on joint moments and powers. Implications for injury risk and sports performance can also be drawn from these results, but more research would need to be done in order to fully understand loaded landings as they relate to either of those topics. Additionally, as the landscape of loaded landings is still quite shallow, any research regarding the effects to the lower extremity at landing with load would continue to create a more robust understanding of such an important aspect of jumping.

ISBN: 9798522906108Subjects--Topical Terms:

548685
Biomechanics.
Subjects--Index Terms:

Jumping

The Effect of Load on the Kinetics and Kinematics of the Lower Extremity During Landing.
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500 $a Source: Masters Abstracts International, Volume: 83-02.
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520 $a Purpose: To understand the differences in the lower extremity kinetics and kinematics as load increases during jump landings. Methods: Ten male participants (20.4 years ± 2.41 years, 108.8kg ± 14.02kg) took part in two testing sessions. The first testing session involved testing each participant's 1-repetition max in the hexagonal barbell deadlift. The second testing session involved the data collection of the jumping trials for each participant. Participants performed their countermovement jumps under seven randomized conditions. Six of the conditions involved the hex bar using loads equivalent to 10, 20, 30, 40, 50, and 60% estimated 1-repetition max of the hexagonal barbell deadlift. The seventh condition was an unloaded (bodyweight or 0%) countermovement jump. Peak values for joint powers, moments, angles, and velocities were recorded for the ankle, knee, and hip for all participants and conditions. A repeated measures ANOVA was used to compare differences among results. Results: Significant differences (p < .05) were found in the joint powers and moments but no differences were found in any condition or joint for the peak angles or velocities. The greatest absolute values for both the peak powers and moments were found at the unloaded condition and decreased as load increased. Conclusion: This investigation has largely supported the previous research that has been done regarding loaded landings. The current findings support the previous notions that jump heights and joint velocity seem to have direct effect on joint moments and powers. Implications for injury risk and sports performance can also be drawn from these results, but more research would need to be done in order to fully understand loaded landings as they relate to either of those topics. Additionally, as the landscape of loaded landings is still quite shallow, any research regarding the effects to the lower extremity at landing with load would continue to create a more robust understanding of such an important aspect of jumping.
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