scholarly journals Relationship between Lower Limb Loading Force, Knee Extension Muscle Strength and Ability to Maintain a Sitting Position

2006 ◽  
Vol 21 (2) ◽  
pp. 169-173
Author(s):  
Shin MURATA ◽  
Yoshihiro KAI ◽  
Jun MURATA
Keyword(s):  
Muscle Strength ◽  
Lower Limb ◽  
Knee Extension ◽  
Sitting Position ◽  
Limb Loading

scholarly journals Comparison of quadriceps setting strength and knee extension strength tests to evaluate lower limb muscle strength based on health-related physical fitness values in elderly people

2020 ◽  
Vol 6 (1) ◽  
pp. e000753
Author(s):  
Yuki Ito ◽  
Takumi Aoki ◽  
Takeru Sato ◽  
Kan Oishi ◽  
Kojiro Ishii
Keyword(s):  
Muscle Strength ◽  
Physical Fitness ◽  
Grip Strength ◽  
Lower Limb ◽  
Knee Extension ◽  
Walking Distance ◽  
Lower Limb Muscle ◽  
Limb Muscle ◽  
Knee Extension Strength ◽  
Health Related

ObjectiveConventionally, knee extension strength is often used as the indicator for lower limb muscle strength; however, several recent studies have also used quadriceps setting strength. This study aimed to investigate and compare the association of quadriceps setting and knee extension strength with health-related physical fitness.MethodsWe evaluated quadriceps setting strength and isometric knee extension strength in 75 elderly subjects (mean age, 76.8±5.3 years) to determine their lower limb muscle strength. Health-related physical fitness was evaluated using the physical fitness test advocated by the Ministry of Education and Culture, Sports, Science and Technology in Japan. The test consists of the following components: grip strength, sit-up, sit and reach, one leg standing with eyes open, 10 m obstacle walk and 6 min walk.ResultsWhen adjusted for age, sex and body mass index, quadriceps setting strength was significantly correlated with grip strength, number of sit-ups, sit and reach distance, 10 m obstacle walking time and 6 min walking distance. In contrast, knee extension strength was associated only with grip strength and number of sit-ups.ConclusionMore health-related physical fitness parameters with quadriceps setting strength than knee extension strength. Quadriceps setting strength may be superior to knee extension strength as a predictor of health-related physical fitness.

scholarly journals Inter-Rater and Intra-Rater Reliability of Lower Limb Loading Force Measurements of Hemiplegic Patients in the Sitting Position

2010 ◽  
Vol 25 (4) ◽  
pp. 567-571
Author(s):  
Hiroshi OTAO ◽  
Shin MURATA ◽  
Mizuki HACHIYA ◽  
Takeya ONO ◽  
Akihiro MIZOKAMI ◽  
...  
Keyword(s):  
Lower Limb ◽  
Sitting Position ◽  
Force Measurements ◽  
Rater Reliability ◽  
Limb Loading

scholarly journals Lower Limb Strength Profile in Elderly with Different Pathologies: Comparisons with Healthy Subjects

Geriatrics ◽  
2020 ◽  
Vol 5 (4) ◽  
pp. 83
Author(s):  
Valentina Bullo ◽  
Enrico Roma ◽  
Stefano Gobbo ◽  
Federica Duregon ◽  
Manuele Bergamo ◽  
...  
Keyword(s):  
Muscle Strength ◽  
Lower Limb ◽  
Muscular Strength ◽  
The Elderly ◽  
Knee Extension ◽  
Relative Strength ◽  
Elderly Subjects ◽  
Transplant Recipients ◽  
Kidney Transplant Recipients ◽  
Healthy Elderly

Sarcopenia and muscle strength reduction are a frequent disorder in non-communicable chronic diseases. The aims of this study are: (a) to verify if the absolute and relative to body weight muscle strength of lower limb is affected by the presence of pathology; (b) to verify if the trends are different among knee and ankles joints. One-hundred and forty-five elderly were recruited (16 liver transplant recipients, 48 kidney transplant recipients, 52 elderly with obesity, 30 healthy elderly). Muscular strength of lower limb was evaluated. Evaluation protocol included maximal isometric knee extension, maximal isokinetic knee extension and flexion, maximal isokinetic ankle (both right and left) extension and flexion. A statistically significant interaction between measurement and group membership was found for absolute strength measure (F (4.23, 170.56) = 3.316, p = 0.011, partial η2 (η2p) = 0.076), and relative strength measure(F (4.44, 174.72) = 16.407, p < 0.01, partial η2 (η2p) = 0.294). Elderly patients living with kidney transplants showed the lower level of absolute muscular strength, while relative muscular strength is mainly lacking in the elderly with obesity. The strength profile of elderly subjects is affected by obesity, liver transplantation, and kidney transplantation.

scholarly journals Relationships between Lower Limb Loading Force and Knee Extension Strength and Ability to Maintain Sitting of Hemiplegic Patients

2010 ◽  
Vol 25 (3) ◽  
pp. 427-430
Author(s):  
Hiroshi OTAO ◽  
Shin MURATA ◽  
Jun MURATA ◽  
Syozo NAKAMURA ◽  
Akihiro MIZOKAMI ◽  
...  
Keyword(s):  
Lower Limb ◽  
Knee Extension ◽  
Knee Extension Strength ◽  
Limb Loading

Dynamometer Measurements of Grip and Knee Extension Strength: Are They Indicative of Overall Limb and Trunk Muscle Strength?

2009 ◽  
Vol 108 (2) ◽  
pp. 339-342 ◽  
Author(s):  
Richard W. Bohannon
Keyword(s):  
Principal Component Analysis ◽  
Muscle Strength ◽  
Upper Limb ◽  
Lower Limb ◽  
Principal Component ◽  
Knee Extension ◽  
Manual Muscle Test ◽  
Knee Extension Strength ◽  
Lower Limb Strength ◽  
Trunk Strength

Single dynamometric measures are sometimes used to characterize overall muscle strength. This study examined the legitimacy of that practice by assessing how dynamometer measures of grip and knee extension strength related to manual muscle-test grades of each upper and lower limb and of the trunk. Based on correlations and principal component analysis, grip dynamometry can be used to characterize upper limb strength but not lower limb strength; knee extension dynamometry can be used to characterize lower limb and trunk strength.

scholarly journals Preparatory Knee Flexion-Extension Movements Enhance Rapid Sidestepping Performance in Collegiate Basketball Players

2021 ◽  
Vol 3 ◽  
Author(s):  
Masahiro Fujimoto ◽  
Eri Uchida ◽  
Akinori Nagano ◽  
Mark W. Rogers ◽  
Tadao Isaka
Keyword(s):  
Lower Limb ◽  
Knee Flexion ◽  
Knee Extension ◽  
Movement Initiation ◽  
Basketball Players ◽  
Step Initiation ◽  
Limb Loading ◽  
Flexion Extension ◽  
Collegiate Basketball ◽  
Lift Off

Lower-limb weight-bearing load distribution in stationary standing influences the timing of rapid first step initiation of importance for functional movement activities and agility performance in sports. This study investigated the effect of pre-step lower-limb loading and unloading with preparatory knee flexion-extension movements on sidestepping performance in fifteen male collegiate basketball players. Participants performed two-choice (step limb) reaction time sidestepping under two conditions: without preparatory movements before the go cue (no-prep–NP) and with continuous alternating knee extension and flexion movements (prep–P). The reaction signal was provided at the beginning of knee extension and flexion and during these movements which corresponded with the largest and smallest loading instants and the transition states between those instants. Sidestepping performance was assessed with three-dimensional kinematic data and ground reaction forces. Step initiation onset time was significantly faster by 13–15% than the NP condition when initiated in the knee flexion phase (p ≤ 0.028, r ≥ 0.70), whereas step-limb unloading interval from step initiation to step lift-off was significantly faster by 12–15% in the knee extension phase (p ≤ 0.01, r ≥ 0.74). The preparatory movements significantly shortened step lift-off by 10–12% (p ≤ 0.013, r ≥ 0.73) and step duration by 17–21% (p &lt; 0.001, r ≥ 0.85) with 19–22% faster step velocity (p &lt; 0.001, r ≥ 0.84), which resulted in 14–15% shorter overall time to step landing (p &lt; 0.001, r ≥ 0.84), irrespective of the loading phases. These results indicated that lower-limb loading with pre-step knee flexion facilitated faster step initiation, while lower-limb unloading with knee extension facilitated faster step-limb unloading, both resulting in faster step lift-off. Bilateral knee flexion-extension movements as a preparatory action could be utilized by invasion sports players to facilitate reactive stepping performance for more effective movement initiation.

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