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Objective:To explore the value of iterative decomposition of water and fat with asymmetry and least squares estimation-quantitative fat imaging (IDEAL-IQ) in quantitative evaluation of thigh muscle fat content and its correlation with muscle strength in middle-aged and elderly volunteers.Methods:From December 2020 to April 2021, 30 volunteers aged 45 to 70 were recruited prospectively, including 15 males and 15 females with 52.5 (49.0, 56.3) years old. All subjects were scanned at 3.0 T MR, including axial T 1WI, IDEAL-IQ and coronal T 2WI of the left thigh. The region of interest of the knee extensors (quadriceps femoris) and knee flexors (hamstrings) in the left mid-thigh were delineated, and muscle cross-sectional area (CSA), skeletal muscle index (SMI), intermuscular fat fraction (FF) and intramuscular FF were obtained. In addition, isokinetic muscle strength measurement was performed on the left knee joint of all subjects at angular speeds of 60°/s and 180°/s to obtain peak torque (PT) and total work (TW) of knee flexors and extensors. Independent sample t-test, paired t-test or Mann-Whitney U test were used to compare the differences of CSA, SMI, intermuscular FF, intramuscular FF, PT and TW between different genders and muscle groups. Pearson or Spearman correlation analysis, and multiple linear regression analysis were used to analyze the correlation between CSA, SMI, intermuscular FF, intramuscular FF and PT, TW of thigh muscles. Results:The CSA, PT and TW of thighs in males were higher than those in females ( P<0.05), while the intermuscular FF in males was lower than that in females ( P=0.005). The CSA, SMI and PT of the thigh extensors were higher than those of the flexors ( P<0.001), while the intramuscular FF and intermuscular FF were lower than those of the flexors ( P<0.001). Intramuscular FF of flexors and extensors were moderately negatively correlated with PT ( r=-0.635, P<0.001; r=-0.546, P<0.001), and highly, moderately negatively correlated with TW ( r=-0.718, P<0.001; r=-0.616, P<0.001). Intermuscular FF of flexors and extensors were moderately negatively correlated with PT ( r=-0.519, P=0.003; r=-0.443, P=0.014), and negatively correlated with TW ( r=-0.363, P=0.049; r=-0.552, P=0.002). There was no significant correlation between CSA, SMI and PT, TW in flexors and extensors of thigh ( P>0.05). Multiple linear regression analysis showed that intramuscular FF was still significantly correlated with PT and TW of flexors and extensors (flexors: R 2adj=0.505, P=0.001; R 2adj=0.540, P<0.001; extensors: R 2adj=0.351, P=0.006; R 2adj=0.470, P=0.002). Conclusion:FF based on IDEAL-IQ technology can accurately quantify the intramuscular and intermuscular fat content of thighs, and there are negative correlations between intramuscular FF, intermuscular FF and isokinetic muscle strength measurements including PT and TW. Among them, intramuscular FF is more significant.
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Objective：We conducted a new physical fitness test and assessed activity and social participation in pediatric cancer survivors who participated in our hospital events and examined its characteristics and issues.Subjects：A total of 30 children aged 5 years or older (median age 9 years, 17 boys, 13 girls) were enrolled in the study. They were chosen from a pool of 44 pediatric cancer survivors who participated in our hospital's long-term follow-up events from August 2018 to August 2019.Methods：Medical records and evaluations performed at the events were examined retrospectively. Survey items included sex, diagnosis, age at evaluation and onset, years since discharge, physical and cognitive functions, new physical fitness test results, and ability to perform basic physical activity.Results：Regardless of the number of years since discharge from the hospital, physical fitness tended to be lower than the national average for both sexes and all ages, with a particular decline in endurance. Twenty-six of the 30 subjects (87%) were able to attend school all day and go out for a day. In addition, 11 (37%) participated in physical activities other than physical education and club activities.Conclusions：Childhood cancer survivors may have a long-term, persistent decline in physical fitness, even if they are able to participate in academic, leisure, and social activities, such as exercise lessons. It is beneficial to provide continuous support for physical fitness during hospitalization and throughout life, as well as to accomplish activities and social participation in accordance with growth.
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Objective：We conducted a new physical fitness test and assessed activity and social participation in pediatric cancer survivors who participated in our hospital events and examined its characteristics and issues.Subjects：A total of 30 children aged 5 years or older (median age 9 years, 17 boys, 13 girls) were enrolled in the study. They were chosen from a pool of 44 pediatric cancer survivors who participated in our hospital's long-term follow-up events from August 2018 to August 2019.Methods：Medical records and evaluations performed at the events were examined retrospectively. Survey items included sex, diagnosis, age at evaluation and onset, years since discharge, physical and cognitive functions, new physical fitness test results, and ability to perform basic physical activity.Results：Regardless of the number of years since discharge from the hospital, physical fitness tended to be lower than the national average for both sexes and all ages, with a particular decline in endurance. Twenty-six of the 30 subjects (87%) were able to attend school all day and go out for a day. In addition, 11 (37%) participated in physical activities other than physical education and club activities.Conclusions：Childhood cancer survivors may have a long-term, persistent decline in physical fitness, even if they are able to participate in academic, leisure, and social activities, such as exercise lessons. It is beneficial to provide continuous support for physical fitness during hospitalization and throughout life, as well as to accomplish activities and social participation in accordance with growth.
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PURPOSE: The purpose of this study was to compare the reliability of unilateral hip abductor strength assessment in side-lying with break and make test in subjects with pelvic drop. Hip abduction muscles are very important in the hip joint structures. Therefore, it is essential to evaluate their strength in a reliable way. METHODS: Twenty-five subjects participated in this study. Unilateral isometric hip abductor muscle strength was measured in side-lying, with use of a specialized tensiometer using smart KEMA system for make test, of a hand held dynamometer for break test. Coefficients of variation, and intra class correlation coefficients were calculated to determine test-retest reliability of hip abductor strength. RESULTS: In make test, maximal hip abductor strength in the side-lying position was significantly higher compared with break test (p<0.05). Additionally, Test-retest reliability of hip abductor strength measurements in terms of coefficients of variation (3.7% for make test, 16.1% for break test) was better in the side-lying position with make test. All intraclass correlation coefficients with break test were lower than make test (0.90 for make test, 0.73 for break test). CONCLUSION: The side-lying body position with make test offers more reliable assessment of unilateral hip abductor strength than the same position with break test. Make test in side-lying can be recommended for reliable measurement of hip abductor strength in subjects with pelvic drop.
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Hand , Hip , Hip Joint , Muscle Strength , Muscles , Reproducibility of ResultsABSTRACT
<p><b>Objective</b>To study the clinical application value of the penile erectile strength measurement (PESM) band in the differentiation of psychogenic from organic erectile dysfunction (ED).</p><p><b>METHODS</b>Eighty ED patients unable to achieve or maintain adequate penile erection to complete sexual intercourse were included in the experimental group and another 40 healthy subjects with normal erectile function enrolled as controls. The ED cases were classified into mild, moderate and severe ED according to the IIEF-5 scores and divided into psychogenic and organic ED based on the results of the nocturnal penile tumescence (NPT) test. Then all the subjects underwent a three-night continuous monitoring with the PESM band and, according to the band fracture rate, the ED cases were also classified into psychogenic and organic ED. The rates of missed diagnosis, misdiagnosis and diagnostic coincidence of PESM were calculated with the results of NPT as the standard for differentiating psychogenic from organic ED.</p><p><b>RESULTS</b>The results of NPT tests revealed 51 cases of psychogenic and 29 cases of organic ED in the experimental group. The band fracture rate in PESM was 95.0% in the mild, 80.9% in the moderate and 52.8% in the severe ED patients. Of the 51 cases of psychogenic ED detected by NPT test, 43 were diagnosed as psychogenic and the other 8 as organic ED with the PESM band, with a coincidence rate of 84.3%. Of the 29 cases of organic ED revealed by NPT test, 5 were diagnosed as psychogenic and the other 24 as organic ED by PESM, with a coincidence rate of 82.8%. Normal erectile function with three-level fracture of the band was observed in the PESM of the normal controls, which showed a coincidence rate of 100% with the results of NPT tests. Based on the standard of the NPT test, the rates of missed diagnosis, misdiagnosis and diagnostic coincidence of the PESM band in differentiating psychogenic from organic ED were 15.7%, 17.2%, and 83.8%, respectively, with a Kappa value of 0.656 (P <0.05).</p><p><b>CONCLUSIONS</b>The penile erectile strength measurement band can be used as a screening tool for initial differentiation of psychogenic from organic ED.</p>
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Humans , Male , Case-Control Studies , Coitus , Diagnostic Errors , Erectile Dysfunction , Classification , Diagnosis , Psychology , Penile Erection , PhysiologyABSTRACT
OBJECTIVES: Sarcopenia, decreased muscle volume and muscle weakness in the elderly is a serious risk of various adverse outcomes. Current diagnostic procedure for sarcopenia includes gait speed, grip strength, and percentage of skeletal muscle volume. However, lower leg muscle strength decreases much faster than grasp power, and we have evaluated the usefulness of its measurement using a recently developed instrument (Locomoscan). METHODS: Forty-three institutionalized elderly subjects were evaluated for their anthropometrical parameters, body composition, grasp and lower leg muscle strength, and gait speed. They were categorized into 2 groups; gait speed equal to or higher than 0.8 m/s and that below 0.8 m/s. RESULTS: Leg muscle strength per body weight was significantly greater in those with their gait speed equal to or higher than 0.8 m/s, whereas there was no significant difference in other parameters. Receiver operator characteristics analysis has shown that leg muscle alone significantly predicted the greater gait speed. CONCLUSIONS: Lower leg muscle strength can be useful for predicting gait speed.
Subject(s)
Aged , Humans , Body Composition , Body Weight , Gait , Hand Strength , Leg , Muscle Strength , Muscle Weakness , Muscle, Skeletal , SarcopeniaABSTRACT
@#The literatures in the PubMed between 1954～2009 on following aspects, such as grip strength assessment tools and Methods , influence factors, endurance of grip strength, test reliability was reviewed. It showed that grip strength is influenced by many factors, and standardized procedure and method should be recommended in the clinical practice for accurate outcome.
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@#Objective To determine the difference between two standardized grip strength test,the American Society of Hand Therapists(ASHT)recommended and the Chinese National Physical Fitness Evaluation Standard(CNPFES)recommended.Methods 32 healthy young adult,right-hand dominant subjects were measured with their grip strength under the both methods.Results The measurement of grip strength using methods the ASHT recommended was smaller than that of the CNPFES(P<0.05),for all their left and right hand.Conclusion The measures of grip strength are different between ASHT and CNPFES standard.It is important to keep the testing conditions while measuring grip strength,and ASHT is suggested.
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@#Objective To investigate the effect of types of pinch on the measurement of pinch strength in healthy young subjects.Methods All anthropometric factors of 20 right-handed young volunteers(10 males,and 10 females)were recorded.Their pinch strength in 3 types(I.e.Pulp2,Chuck,and Lateral)were measured with digital pinch dynamometer in standardized position.Results For both genders,the pinch strength of Lateral was the largest,followed by Chuck,Pulp2 and the dominant hand was stronger(P<0.01).Men were stronger than women in all types of pinch strength(P<0.01).Correlation among the 3 types of pinch strength were presented(r=0.568～0.707,P<0.01).The correlation were found between the pinch strength of 3 types and weight in women(r=0.764～0.807).No correlation has been found among the pinch strength of 3 types and age,height,the thickness of palm in both the males and the females.Conclusion The sex and types of pinch significantly impact pinch strength in healthy young subjects,but the correlation between pinch strength and anthropometry should be further surveyed.