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Evaluation of an experimental liftin...

Silbert, Lyn S.

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Evaluation of an experimental lifting model and an experimental breathing model.

紀錄類型:	書目-電子資源 : Monograph/item
正題名/作者:	Evaluation of an experimental lifting model and an experimental breathing model./
作者:	Silbert, Lyn S.
面頁冊數:	171 p.
附註:	Source: Dissertation Abstracts International, Volume: 60-11, Section: B, page: 5472.
Contained By:	Dissertation Abstracts International60-11B.
標題:	Health Sciences, Rehabilitation and Therapy. -
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=9951223
ISBN:	0599534079

Evaluation of an experimental lifting model and an experimental breathing model.
Silbert, Lyn S.

Evaluation of an experimental lifting model and an experimental breathing model. - 171 p.

Source: Dissertation Abstracts International, Volume: 60-11, Section: B, page: 5472.

Thesis (Ph.D.)--University of Hawai'i, 1999.

The L-5 lever arm and the kinematics of 23 competitive power lifters (PL), 12 licensed physical therapists (PT) and 22 subjects who performed an experimental lifting technique (ELT) were measured at set up, lift off and knee passing, from video tapes taken in the sagital plane while all subjects deadlifted lifted light weights. The intent of the study was to evaluate what subjects considered proper lifting technique. The ELT L-5 lever arm was significantly reduced (P < 0.000001) by ANOVA at all positions, and hip flexion and leg extension were significantly increased (P < 0.000001 for all) compared to the PT and the PL.

ISBN: 0599534079Subjects--Topical Terms:

1017926
Health Sciences, Rehabilitation and Therapy.

Evaluation of an experimental lifting model and an experimental breathing model.
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245 1 0 $a Evaluation of an experimental lifting model and an experimental breathing model.
300 $a 171 p.
500 $a Source: Dissertation Abstracts International, Volume: 60-11, Section: B, page: 5472.
500 $a Chairperson: David Lally.
502 $a Thesis (Ph.D.)--University of Hawai'i, 1999.
520 $a The L-5 lever arm and the kinematics of 23 competitive power lifters (PL), 12 licensed physical therapists (PT) and 22 subjects who performed an experimental lifting technique (ELT) were measured at set up, lift off and knee passing, from video tapes taken in the sagital plane while all subjects deadlifted lifted light weights. The intent of the study was to evaluate what subjects considered proper lifting technique. The ELT L-5 lever arm was significantly reduced (P < 0.000001) by ANOVA at all positions, and hip flexion and leg extension were significantly increased (P < 0.000001 for all) compared to the PT and the PL.
520 $a The ELT included an experimental breathing model which emphasized inward contraction of the transversus abdominis in conjunction with latissimus dorsi muscle recruitment during inspiration for increased intra-abdominal pressure, rib cage expansion, and trunk stability during lifting tasks. In order to determine if the experimental breathing mechanics (EBM) would affect gas exchange during repetitive lifting tasks, the cardiopulmonary variables for 8 subjects (who had been trained to utilize the EBM while learning the ELT) were monitored during 2 sub-maximal 9 minute graded ergometry tests (50--105 watts) and 3 minutes of recovery, one with the EBM and one with their natural breathing mechanics (NB). The subjects were naive as to intent of the study and protocol order was random. The results indicate that the subjects in this study performed the same workload with a significant reduction in both oxygen uptake (V&dot;O2, 6.8%, P < 0.003, paired t-test) and CO 2 elimination (V&dot;CO2, 6%, P < 0.03) with the EBM compared to the NB protocol. Inward motion of the abdomen was confirmed during the EBM protocol by fastening a tape measure to their waistline 2 cm. below the umbilicus at the same circumference measured with their lower abdominals pulled in maximally prior to the ergometry tests. Subjects were closely monitored and did not push against the tape measure at any time during the work or recovery portion of the EBM test. Waistline circumference EBM was significantly reduced, (P < 0.0002 by paired t-test) and rib cage circumference EBM was significantly larger (P < 0.005) compared to the NB protocol. These results indicate that the ELT which included the EBM significantly reduced the L-5 lever arm. In addition the EBM V&dot;O2 and V&dot;CO2 were significantly reduced compared to the NB V&dot;O2 and V&dot;CO2 for the same work load.
590 $a School code: 0085.
650 4 $a Health Sciences, Rehabilitation and Therapy. $3 1017926
650 4 $a Health Sciences, Occupational Health and Safety. $3 1017799
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710 2 0 $a University of Hawai'i. $3 1900371
773 0 $t Dissertation Abstracts International $g 60-11B.
790 1 0 $a Lally, David, $e advisor
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856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=9951223