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Short Term Effects of Eccentric Over...

Munger, Cameron N.

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Short Term Effects of Eccentric Overload Versus Traditional Back Squat Training on Strength, Power and Speed.

紀錄類型:	書目-電子資源 : Monograph/item
正題名/作者:	Short Term Effects of Eccentric Overload Versus Traditional Back Squat Training on Strength, Power and Speed./
作者:	Munger, Cameron N.
出版者:	Ann Arbor : ProQuest Dissertations & Theses, : 2020,
面頁冊數:	99 p.
附註:	Source: Dissertations Abstracts International, Volume: 81-12.
Contained By:	Dissertations Abstracts International81-12.
標題:	Kinesiology. -
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=27835753
ISBN:	9798645473143

Short Term Effects of Eccentric Overload Versus Traditional Back Squat Training on Strength, Power and Speed.
Munger, Cameron N.

Short Term Effects of Eccentric Overload Versus Traditional Back Squat Training on Strength, Power and Speed. - Ann Arbor : ProQuest Dissertations & Theses, 2020 - 99 p.

Source: Dissertations Abstracts International, Volume: 81-12.

Thesis (Ph.D.)--New Mexico State University, 2020.

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

Benefits of training with eccentric overload include increased concentric strength, eccentric strength, explosiveness, and early skeletal muscle adaptation. However, there is a lack of practical strength and conditioning protocols that compare traditional methods and eccentric overload. Additionally, existing comparisons are somewhat indirect and do not account for similar amounts of work and equal volume. PURPOSE: To directly compare the short-term effects of eccentric overload versus traditional back squat training on strength and performance. METHODS: Thirty-three resistance-trained males (Age: 23.4  2.7 years, Height: 174.9  10.6 cm, Mass: 78.3  10.6 kg) were divided into three groups in a random, counterbalanced fashion: Traditional (TRAD, n=12), Eccentric Overload (EO, n=11), and Control (CTRL, n=10). Back squat training occurred twice per week for 5 weeks and was progressive whereby volume started high and ended low; intensity started low and ended high. The average relative intensity for each rep and the volume was the same between experimental groups. Overload was applied via eccentric hooks for EO. RESULTS: Multiple 3x2 (Group x Test) ANOVAs were performed on the following pre and post-test dependent variables; peak power and peak velocity during submaximal sets, 1RM, Ecc 1RM, countermovement vertical jump height, and 20-meter sprint split times from 0-5, 5-10, and 10-20 meters. Ecc 1RM: A significant Group by Test interaction [F(2, 30) = 9.39, p = .001, ηp2 = .39] was observed for eccentric 1RM as group differences emerged from the pre-test to post-test. The source of the interaction was related to a significant increase in mean 1RM strength from pre to post-test for the EO group (+16.9 kg) and TRAD group (+12.7 kg). The CNTRL group (+2.0 kg) showed no differences from the pre to post-test. CMJ Height: A significant Group by Test interaction [F(2, 30) = 4.12, p = .026, ηp2 = .22] was observed for CMJ from the pretest to post-test. The source of the interaction was related to a significant increase in mean CMJ height from pre to post-test for the EO group (+3.8 cm) and TRAD group (+2.9 cm). The CNTRL group (+0.0 cm) showed no differences from the pre to post-test. CONCLUSIONS: Using Eccentric overload during a short-term back squat training protocol enhanced explosiveness in the vertical jump and eccentric strength. Athletes aiming to enhance lower body explosiveness and eccentric strength may benefit from eccentric overload back squat training in as little as 10 sessions spread over five weeks. Athletes looking to enhance concentric strength, such as powerlifters and strongman, should adhere to other methods when concentric capability is the primary focus.

ISBN: 9798645473143Subjects--Topical Terms:

517627
Kinesiology.
Subjects--Index Terms:

Back

Short Term Effects of Eccentric Overload Versus Traditional Back Squat Training on Strength, Power and Speed.
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245 1 0 $a Short Term Effects of Eccentric Overload Versus Traditional Back Squat Training on Strength, Power and Speed.
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300 $a 99 p.
500 $a Source: Dissertations Abstracts International, Volume: 81-12.
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502 $a Thesis (Ph.D.)--New Mexico State University, 2020.
506 $a This item must not be sold to any third party vendors.
520 $a Benefits of training with eccentric overload include increased concentric strength, eccentric strength, explosiveness, and early skeletal muscle adaptation. However, there is a lack of practical strength and conditioning protocols that compare traditional methods and eccentric overload. Additionally, existing comparisons are somewhat indirect and do not account for similar amounts of work and equal volume. PURPOSE: To directly compare the short-term effects of eccentric overload versus traditional back squat training on strength and performance. METHODS: Thirty-three resistance-trained males (Age: 23.4  2.7 years, Height: 174.9  10.6 cm, Mass: 78.3  10.6 kg) were divided into three groups in a random, counterbalanced fashion: Traditional (TRAD, n=12), Eccentric Overload (EO, n=11), and Control (CTRL, n=10). Back squat training occurred twice per week for 5 weeks and was progressive whereby volume started high and ended low; intensity started low and ended high. The average relative intensity for each rep and the volume was the same between experimental groups. Overload was applied via eccentric hooks for EO. RESULTS: Multiple 3x2 (Group x Test) ANOVAs were performed on the following pre and post-test dependent variables; peak power and peak velocity during submaximal sets, 1RM, Ecc 1RM, countermovement vertical jump height, and 20-meter sprint split times from 0-5, 5-10, and 10-20 meters. Ecc 1RM: A significant Group by Test interaction [F(2, 30) = 9.39, p = .001, ηp2 = .39] was observed for eccentric 1RM as group differences emerged from the pre-test to post-test. The source of the interaction was related to a significant increase in mean 1RM strength from pre to post-test for the EO group (+16.9 kg) and TRAD group (+12.7 kg). The CNTRL group (+2.0 kg) showed no differences from the pre to post-test. CMJ Height: A significant Group by Test interaction [F(2, 30) = 4.12, p = .026, ηp2 = .22] was observed for CMJ from the pretest to post-test. The source of the interaction was related to a significant increase in mean CMJ height from pre to post-test for the EO group (+3.8 cm) and TRAD group (+2.9 cm). The CNTRL group (+0.0 cm) showed no differences from the pre to post-test. CONCLUSIONS: Using Eccentric overload during a short-term back squat training protocol enhanced explosiveness in the vertical jump and eccentric strength. Athletes aiming to enhance lower body explosiveness and eccentric strength may benefit from eccentric overload back squat training in as little as 10 sessions spread over five weeks. Athletes looking to enhance concentric strength, such as powerlifters and strongman, should adhere to other methods when concentric capability is the primary focus.
590 $a School code: 0143.
650 4 $a Kinesiology. $3 517627
650 4 $a Health sciences. $3 3168359
653 $a Back
653 $a Eccentric
653 $a Overload
653 $a Performance
653 $a Squat
653 $a Training
690 $a 0575
690 $a 0566
710 2 $a New Mexico State University. $b Kinesiology and Dance. $3 3546699
773 0 $t Dissertations Abstracts International $g 81-12.
790 $a 0143
791 $a Ph.D.
792 $a 2020
793 $a English
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=27835753