scholarly journals A Maximum Muscle Strength Prediction Formula Using Theoretical Grade 3 Muscle Strength Value in Daniels et al.’s Manual Muscle Test, in Consideration of Age: An Investigation of Hip and Knee Joint Flexion and Extension

2017 ◽  
Vol 2017 ◽  
pp. 1-9 ◽  
Author(s):  
Hideyuki Usa ◽  
Masashi Matsumura ◽  
Kazuna Ichikawa ◽  
Hitoshi Takei
Keyword(s):  
Muscle Strength ◽  
Knee Joint ◽  
Segment Length ◽  
Elderly Adults ◽  
Middle Aged ◽  
Manual Muscle Test ◽  
Limb Segment ◽  
Joint Flexion ◽  
Grade 3 ◽  
Flexion And Extension

This study attempted to develop a formula for predicting maximum muscle strength value for young, middle-aged, and elderly adults using theoretical Grade 3 muscle strength value (moment fair:Mf)—the static muscular moment to support a limb segment against gravity—from the manual muscle test by Daniels et al. A total of 130 healthy Japanese individuals divided by age group performed isometric muscle contractions at maximum effort for various movements of hip joint flexion and extension and knee joint flexion and extension, and the accompanying resisting force was measured and maximum muscle strength value (moment max,Mm) was calculated. Body weight and limb segment length (thigh and lower leg length) were measured, andMfwas calculated using anthropometric measures and theoretical calculation. There was a linear correlation betweenMfandMmin each of the four movement types in all groups, excepting knee flexion in elderly. However, the formula for predicting maximum muscle strength was not sufficiently compatible in middle-aged and elderly adults, suggesting that the formula obtained in this study is applicable in young adults only.

Modeling the resistance mechanism of passive knee joint flexion and extension for use in rehabilitation equipment

2021 ◽  
pp. 095441192199013
Author(s):  
Mansoor Amiri ◽  
Farhad Tabatabai Ghomsheh ◽  
Farshad Ghazalian
Keyword(s):  
Knee Joint ◽  
Sagittal Plane ◽  
Resistance Mechanism ◽  
Time Dependent ◽  
Coefficient Of Determination ◽  
Joint Movement ◽  
Elastic Coefficient ◽  
Knee Movement ◽  
Joint Flexion ◽  
Flexion And Extension

The purpose of this study was to model the resistance mechanism of Passive Knee Joint Flexion and Extension to create a similar torque mechanism in rehabilitation equipment. In order to better model the behavior of passive knee tissues, it is necessary to exactly calculate the two coefficients of elasticity of time-independent and time-dependent parts. Ten healthy male volunteers (mean height 176.4+/−4.59 cm) participated in this study. Passive knee joint flexion and extension occurred at velocities of 15, 45, and 120 (degree/s), and in five consecutive cycles and within the range of 0 to 100° of knee movement on the sagittal plane on Cybex isokinetic dynamometer. To ensure that the muscles were relaxed, the electrical activity of knee muscles was recorded. The elastic coefficient, (KS) increased with elevating the passive velocity in flexion and extension. The elastic coefficient, (KP) was observed to grow with the passive velocity increase. While, the viscous coefficient (C) diminished with passive velocity rise in extension and flexion. The heightened passive velocity of the motion resulted in increased hysteresis (at a rate of 42%). The desired of passive velocity is lower so that there is less energy lost and the viscoelastic resistance of the tissue in the movement decreases. The Coefficient of Determination, R2 between the model-responses and experimental curves in the extension was 0.96 < R2 < 0.99 and in flexion was 0.95 < R2 < 0.99. This modeling is capable of predicting the true performance of the components of passive knee movement and we can create a resistance mechanism in the rehabilitation equipment to perform knee joint movement. Quantitative measurements of two elastic coefficients of Time-independent and Time-dependent parts passive knee joint coefficients should be used for better accurate simulation the behavior of passive tissues in the knee which is not seen in other studies.

scholarly journals Relationship between Grade 3 Muscle Strength and the Maximum Muscle Strength in Manual Muscle Testing of Legs: Assessment of Flexion and Extension of the Hip and Knee Joints

2014 ◽  
Vol 29 (6) ◽  
pp. 861-865 ◽  
Author(s):  
Hideyuki USA ◽  
Masashi MATSUMURA ◽  
Daisuke OGAWA ◽  
Masafumi HATA ◽  
Kazuna ICHIKAWA ◽  
...  
Keyword(s):  
Muscle Strength ◽  
Knee Joints ◽  
Manual Muscle Testing ◽  
Muscle Testing ◽  
Grade 3 ◽  
Flexion And Extension

scholarly journals Electroacupuncture and Manual Acupuncture Increase Joint Flexibility but Reduce Muscle Strength

Healthcare ◽  
2020 ◽  
Vol 8 (4) ◽  
pp. 414
Author(s):  
Daeho Kim ◽  
Sein Jang ◽  
Jihong Park
Keyword(s):  
Muscle Strength ◽  
Knee Joint ◽  
Activation Function ◽  
Quadriceps Strength ◽  
Post Treatment ◽  
Manual Acupuncture ◽  
Joint Flexibility ◽  
Joint Flexion ◽  
Hip Flexion ◽  
Straight Leg Raise

The objective of this study was to investigate the immediate effects of electroacupuncture and manual acupuncture on hip flexion range of motion (ROM), knee joint (flexion replication at 15° and 45°) and quadriceps (strength and activation) function. Forty-five neurologically healthy adults participated in this randomized controlled laboratory study. Straight leg raise test, modified Thomas test, and hip abductors strength test were performed to determine acupoints. Afterwards, one of three 15-min treatments (control—no treatment, electroacupuncture, or manual acupuncture) was randomly applied using determined acupoints. Measurements (hip flexion ROM, and knee joint and quadriceps function) were recorded at baseline, and at 0, 20, and 40 min post treatment. Both electroacupuncture (4.0°, ES = 0.41) and manual acupuncture (5.4°, ES = 0.95) treatment immediately increased hip flexion ROM, and the increased values persisted for 40-min (p = 0.01). Knee flexion replication (at 15°: p = 0.17; 45°: p = 0.19) and quadriceps activation (p = 0.71) did not change at any of the time points. Post-treatment, both electroacupuncture and manual acupuncture decreased quadriceps strength at 0-min (electroacupuncture: 9.2%, p < 0.0001, ES = 0.60) and 40-min (electroacupuncture: 7.3%, p = 0.005, ES = 0.55; manual acupuncture: 8.7%, p = 0.01, ES = 0.54). A single session of either electroacupuncture or manual acupuncture treatment (selected acupoints based on physical examination) may immediately improve joint flexibility but reduce muscle strength.

scholarly journals SCIENTIFIC TRAINING OF SPORTS MEDICINE FOR BALANCE OF KNEE JOINT MUSCLE STRENGTH OF ATHLETES

2021 ◽  
Vol 27 (5) ◽  
pp. 498-503
Author(s):  
Yanhua Men
Keyword(s):  
Muscle Strength ◽  
Knee Joint ◽  
Strength Training ◽  
Lower Limb ◽  
Average Power ◽  
Scientific Basis ◽  
Static Balance ◽  
Left And Right ◽  
The Right ◽  
Flexion And Extension

ABSTRACT Introduction: As skiers need to complete their movements in high mountains and snow, the athlete's landing's stability is directly related to the movement's success. The stable landing action wins high scores for the athletes’ participating actions and protects their safety. Objective: This article analyzes the characteristics of lower limb muscle strength and static balance ability of female freestyle skiing aerials athletes to provide athletes with targeted strength training, evaluation of muscle effects after training, and athlete selection to provide a scientific basis valuable Theoretical reference. Methods: The paper uses isokinetic testing and balance testing methods to study the characteristics of the hip and knee flexor and extensor strengths of the Chinese great female freestyle skiing aerials athletes and the static balance characteristics in four standing positions. Results: The right flexor-extensor force, flexor-extensor force ratio, and average power value of the right hip joint were slightly greater than the left flexor power. The left and right knee joint extensor unit peak weight moments and the left and right average power values were all four indicators. Greater than the flexor, at different test speeds of 60°/s (slow speed) and 240°/s (fast), the peak flexion and extension torque per unit weight, the average power of flexion and extension, the force of flexion and extension, and the average power appear with the increase of the test speed as a significant difference. Conclusions: The research in the thesis recommends reasonable weight control and balanced training of muscle strength, using the condition of moderately increasing exercise speed, to strengthen the training of lower limb extensor strength, provide targeted strength training for athletes, evaluate the muscle effect after training and providing the scientific basis and valuable theoretical reference. Level of evidence II; Therapeutic studies - investigation of treatment results.

scholarly journals Seizure after Subdural Hematoma Treated with Combination Western-Korean Medicine

2021 ◽  
Vol 38 (1) ◽  
pp. 72-78
Author(s):  
Jae Eun Jeong ◽  
You Jung Lee ◽  
Yeon Ah Choi ◽  
Jang Mi Park ◽  
Seung Min Lee ◽  
...  
Keyword(s):  
Muscle Strength ◽  
Subdural Hematoma ◽  
Medical Research Council ◽  
Late Onset ◽  
Severity Scale ◽  
Manual Muscle Test ◽  
Korean Medicine ◽  
Strength Tests ◽  
Grade 3 ◽  
The Right

Combined Western-Korean medicine treatments were given to a 67-year-old woman with late onset seizures who underwent surgical drainage of a subdural hematoma. Clonazepam and herbal medicine was prescribed. Acupuncture, moxibustion, cupping, chuna, and physical therapy were also performed. The frequency and intensity of seizures was assessed using the Chalfont Seizure Severity Scale. The seizure index score improved from 25 at admission to 0 at discharge. Pain in the right upper extremity reduced from 10 to 0 on the visual analogue scale and muscle strength increased from Grade 3 to 5 in Medical Research Council Scale for the Manual Muscle Test. At the time of hospitalization, the manual muscle strength tests for the affected shoulder, elbow, wrist, and grip strength were 30%, 60%, 10%, 5%, respectively, which improved almost 100% by discharge. Further studies using combined Western-Korean medicine for seizures after strokes are necessary to determine the most effective treatment.

scholarly journals Relationships between Socioeconomic Status, Handgrip Strength, and Non-Alcoholic Fatty Liver Disease in Middle-Aged Adults

2021 ◽  
Vol 18 (4) ◽  
pp. 1892
Author(s):  
Jinkyung Cho ◽  
Inhwan Lee ◽  
Dong-Ho Park ◽  
Hyo-Bum Kwak ◽  
Kisuk Min
Keyword(s):  
Socioeconomic Status ◽  
Liver Disease ◽  
Muscle Strength ◽  
Fatty Liver Disease ◽  
Handgrip Strength ◽  
Low Ses ◽  
Middle Aged ◽  
Alcoholic Fatty Liver ◽  
Middle Aged Adults ◽  
Alcoholic Fatty Liver Disease

Although low socioeconomic status (SES) and decreased muscle strength have been found to be associated with the risk factors of non-alcoholic fatty liver disease (NAFLD), including insulin resistance, obesity, and metabolic syndrome, the associations among SES, muscle strength, and NAFLD are still unclear. We aimed to investigate the combined effect of SES and relative handgrip strength (HGS) on the risk of NAFLD in middle-aged adults. Data from 5272 middle-aged adults who participated in the Korea National Health and Nutrition Examination Surveys (KNHANES) from 2014–2018 were analyzed. NAFLD was defined using the hepatic steatosis index (HSI) > 36 and the comprehensive NAFLD score (CNS) ≥ 40 in the absence of other causes of liver disease. SES was based on a self-reported questionnaire. Overall, individuals with low SES (odds ratio (OR) = 1.703, 95% confidence interval (CI): 1.424–2.037, p < 0.001) or low HGS (OR = 12.161, 95% CI: 9.548–15.488, p < 0.001) had a significantly higher risk of NAFLD. The joint association analysis showed that a low SES combined with a low HGS (OR = 2.479, 95% CI: 1.351–4.549, p = 0.003) further significantly increased the risk of NAFLD when adjusted for all the covariates, compared with individuals with a high SES and a high HGS (OR = 1). The current findings suggest that both low SES and low HGS were independently and synergistically associated with an increased risk of NAFLD in middle-aged Korean adults.

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