The relationship between five measures of trunk strength

Kroll, Penny G.; Machado, L.R.; Happy, Colleen; Leong, Susan; Chen, Ben

doi:10.3233/bmr-2000-14303

Cited by 11 publications

(8 citation statements)

References 33 publications

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“…No studies could be found for adults or children in which values for dynamic back extensor endurance were correlated with static, isometric back extensor strength. However, our findings support those of Kroll, Machado, Happy, Leong, and Chen (2000) who found a very weak correlation ( r = .01) when testing the relationship between isometric extension endurance (Biering-Sorensen test) and isometric extensor force. It appears that dynamic or static endurance and isometric strength test different components of muscular function (Kroll, et al, 2000).…”

Section: Resultssupporting

confidence: 87%

“…However, our findings support those of Kroll, Machado, Happy, Leong, and Chen (2000) who found a very weak correlation ( r = .01) when testing the relationship between isometric extension endurance (Biering-Sorensen test) and isometric extensor force. It appears that dynamic or static endurance and isometric strength test different components of muscular function (Kroll, et al, 2000). Differences in muscle fiber types and their recruitment during the different types and rates of contraction might explain differences in performance and the low correlations between isometric and dynamic tests (Kroll, et al, 2000).…”

Section: Resultssupporting

confidence: 87%

“…It appears that dynamic or static endurance and isometric strength test different components of muscular function (Kroll, et al, 2000). Differences in muscle fiber types and their recruitment during the different types and rates of contraction might explain differences in performance and the low correlations between isometric and dynamic tests (Kroll, et al, 2000).…”

Section: Resultsmentioning

confidence: 99%

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Isometric Strength and Dynamic Back Extensor Endurance are Unrelated in Children Ages 6–10 Years: A Pilot Study

et al. 2004

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This study assessed the correlation between back extensor isometric force and dynamic endurance in 69 children 6-10 years of age. Subjects were positioned prone with legs and hips supported and restrained on two folded 6-in. mats. 42 subjects (20 girls; 22 boys) performed three 5-sec. isometric back extension efforts against a calibrated dynamometer and peak force values were averaged. An additional 27 subjects (9 girls; 18 boys) also performed a dynamic (0 degrees --> 45 degrees flexion-->0 degrees) back extension test at a frequency of 20 per minute, and the number of repetitions was recorded. Both tests were repeated at a 1-wk. interval. Pearson correlations for the endurance, the isometric force test, and test-retest, and between the functional concentric endurance vs isometric force were .55, .79 (both p<.01), and .03, respectively. These tests have moderate to high reliability but they examine different aspects of back muscle fitness. They should not be used interchangeably to assess back extensor muscle fitness. Further investigation must determine whether different dynamic test frequencies and mat heights yield different results.

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Section: Resultssupporting

confidence: 87%

Section: Resultssupporting

confidence: 87%

Section: Resultsmentioning

confidence: 99%

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Isometric Strength and Dynamic Back Extensor Endurance are Unrelated in Children Ages 6–10 Years: A Pilot Study

et al. 2004

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“…The participants were instructed to attempt to straighten the upper part of their body, pulling up on the handle gradually without bending their knees, until they reached a maximum effort. The value displayed on the indicator in kilograms of force was recorded 13 14

Thirty-second sit-ups (number of repetitions): From the supine position, participants were asked to bend their knees at a 90° angle, with their arms folded over their chest.

…”

Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Critical factors for the prevention of low back pain in elite junior divers

Narita¹,

Kaneoka

Takemura

et al. 2013

Br J Sports Med

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The effects of fatigue on performance in simulated nursing work

Barker

Nussbaum

2011

Ergonomics

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Fatigue is associated with increased rates of medical errors and healthcare worker injuries, yet existing research in this sector has not considered multiple dimensions of fatigue simultaneously. This study evaluated hypothesised causal relationships between mental and physical fatigue and performance. High and low levels of mental and physical fatigue were induced in 16 participants during simulated nursing work tasks in a laboratory setting. Task-induced changes in fatigue dimensions were quantified using both subjective and objective measures, as were changes in performance on physical and mental tasks. Completing the simulated work tasks increased total fatigue, mental fatigue and physical fatigue in all experimental conditions. Higher physical fatigue adversely affected measures of physical and mental performance, whereas higher mental fatigue had a positive effect on one measure of mental performance. Overall, these results suggest causal effects between manipulated levels of mental and physical fatigue and task-induced changes in mental and physical performance. STATEMENT OF RELEVANCE: Nurse fatigue and performance has implications for patient and provider safety. Results from this study demonstrate the importance of a multidimensional view of fatigue in understanding the causal relationships between fatigue and performance. The findings can guide future work aimed at predicting fatigue-related performance decrements and designing interventions.

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The relationship between five measures of trunk strength

Cited by 11 publications

References 33 publications

Isometric Strength and Dynamic Back Extensor Endurance are Unrelated in Children Ages 6–10 Years: A Pilot Study

Isometric Strength and Dynamic Back Extensor Endurance are Unrelated in Children Ages 6–10 Years: A Pilot Study

Critical factors for the prevention of low back pain in elite junior divers

The effects of fatigue on performance in simulated nursing work

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