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Associations of muscle mass,strength,and quality with all-cause mortality in China:a population-based cohort study

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Chinese Medical Journal 2022年第11期135卷 1358-1368页

作者： Man Wu Yuxia Wei Jun Lv Yu Guo Pei Pei Jiachen Li Huaidong Du Ling Yang Yiping Chen Xiaohui Sun Hua Zhang Junshi Chen Zhengming Chen Canqing Yu Liming Li 无 Department of Epidemiology and Biostatistics School of Public HealthPeking UniversityBeijing 100191China Key Laboratory of Molecular Cardiovascular Sciences Ministry of EducationPeking UniversityBeijing 100191China Peking University Center for Public Health and Epidemic Preparedness&Responses Beijing 100191China National Coordinating Center of China Kadoorie Biobank Chinese Academy of Medical SciencesBeijing 102308China Medical Research Council Population Health Research Unit the University of OxfordOxford OX37LFUK Clinical Trial Service Unit and Epidemiological Studies Unit(CTSU) Nuffield Department of Population HealthUniversity of OxfordOxford OX37LFUK NCDs Prevention and Control Department Qingdao CDCQingdaoShandong 266033China NHC Key Laboratory of Food Safety Risk Assessment China National Center for Food Safety Risk AssessmentBeijing 100022China. on behalf of the China Kadoorie Biobank Collaborative Group

Background It remains unclear about the association of muscle mass,strength,and quality with death in the general Chinese population of diverse economical and geographical backgrounds.The present study aimed to comprehensively examine such associations across different regions in China.Methods Based on the China Kadoorie Biobank study,the present study included 23,290 participants who were aged 38 to 88 years and had no prevalent cardiovascular diseases or cancer.muscle mass and grip strength were measured using calibrated instruments.Arm muscle quality was defined as the ratio of grip strength to arm muscle mass.Low muscle mass,grip strength,and arm muscle quality were defined as the sex-specific lowest quintiles of muscle mass index,grip strength,and arm muscle quality,respectively.Cox proportional hazards models yielded hazard ratios(HRs)and 95%confidence intervals(CIs)for risks of all-cause mortality in relation to muscle mass,strength,and quality.Results During a median follow-up of 3.98 years,739 participants died.The HR(95%CI)of all-cause mortality risk was 1.28(1.08–1.51)for low appendicular muscle mass index,1.38(1.16–1.62)for low total muscle mass index,1.68(1.41–2.00)for low grip strength,and 1.41(1.20–1.66)for low arm muscle quality in models adjusted for sociodemographic characteristics,lifestyle factors,and medical histories.Conclusion Low muscle mass,grip strength,and arm muscle quality are all associated with short-term increased risks of mortality,indicating the importance of maintaining normal muscle mass,strength,and quality for general Chinese adults.

关键词： muscle All-cause mortality Chinese Prospective muscle mass muscle strength muscle quality

Skeletal muscle mass and quality before preoperative chemotherapy influence postoperative long-term outcomes in esophageal squamous cell carcinoma patients

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World Journal of Gastrointestinal Surgery 2023年第4期15卷 621-633页

作者： Daichi Ichinohe Takahiro Muroya Harue Akasaka Kenichi Hakamada Department of Gastroenterological Surgery Hirosaki University Graduate School of MedicineHirosaki 0368562AomoriJapan

BACKGROUND Previous reports have focused on muscle mass as a prognostic factor in esophageal cancer.AIM To investigate how preoperative body type influences the prognosis of patients with esophageal squamous cell carcinoma who underwent neoadjuvant chemotherapy(NAC)and surgery.METHODS The subjects were 131 patients with clinical stage Ⅱ/Ⅲ esophageal squamous cell carcinoma who underwent subtotal esophagectomy after NAC.Skeletal muscle mass and quality were calculated based on computed tomography images prior to NAC,and their statistical association with long-term outcomes was examined retrospectively in this case-control study.RESULTS The disease-free survival rates in the low psoas muscle mass index(PMI)group vs the high PMI group were 41.3%vs 58.8%(P=0.036),respectively.In the high intramuscular adipose tissue content(IMAC)group vs the low IMAC group,the disease-free survival rates were 28.5%vs 57.6%(P=0.021),respectively.The overall survival(OS)rates for the low PMI group vs the high PMI group were 41.3%vs 64.5%(P=0.008),respectively,and for the high IMAC group vs the low IMAC group,they were 29.9%vs 61.9%(P=0.024),respectively.Analysis of the OS rate revealed significant differences in patients aged 60 years or older(P=0.018),those with pT3 or above disease(P=0.021),or those with lymph node metastasis(P=0.006),aside from PMI and IMAC.Multivariate analysis demonstrated that pT3 or above hazard ratio(HR):1.966,95%confidence interval(CI):1.089-3.550,(P=0.025),lymph node metastasis(HR:2.154,95%CI:1.118-4.148,P=0.022),low PMI(HR:2.266,95%CI:1.282-4.006,P=0.005),and high IMAC(HR:2.089,95%CI:1.036-4.214,P=0.022)were significant prognostic factors for esophageal squamous cell carcinoma.CONCLUSIONSkeletal muscle mass and quality before NAC in patients with esophageal squamous cellcarcinoma are significant prognostic factors for postoperative OS.

关键词： Esophageal squamous cell carcinoma muscle mass muscle quality Neoadjuvant chemotherapy Body composition

The Protocol of Ultrasonic Backscatter Measurements of Musculoskeletal Properties

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Phenomics

Phenomics 2024年第1期4卷 72-80页

作者： Dongsheng Bi Lingwei Shi Boyi Li Ying Li Chengcheng Liu Lawrence HLe Jingchun Luo Sijia Wang Dean Ta Center for Biomedical Engineering School of InformationScience and TechnologyFudan University2005 SonghuRoadYangpu DistrictShanghai 200438China Academy for Engineering and Technology Fudan UniversityShanghai 200433China Department of Radiology and Diagnostic Imaging University of AlbertaEdmonton T6G2B7Canada Human Phenome Institute Fudan UniversityShanghai 201203China Shanghai Institute of Nutrition and Health Chinese Academyof SciencesShanghai 200031China

This study aims to introduce the protocol for ultrasonic backscatter measurements of musculoskeletal properties based on a novel ultrasonic backscatter bone diagnostic(UBBD)instrument.Dual-energy X-ray absorptiometry(DXA)can be adopted to measure bone mineral density(BMD)in the hip,spine,legs and the whole body.The muscle and fat mass in the legs and the whole body can be also calculated by DXA body composition analysis.Based on the proposed protocol for backscatter measurements by UBBD,ultrasonic backscatter signals can be measured in vivo,deriving three backscatter parameters[apparent integral backscatter(AIB),backscatter signal peak amplitude(BSPA)and the corresponding arrival time(BSPT)].AIB may provide important diagnostic information about bone properties.BSPA and BSPT may be important indicators of muscle and fat properties.The standardized backscatter measurement protocol of the UBBD instrument may have the potential to evaluate musculoskeletal characteristics,providing help for promoting the application of the backscatter technique in the clinical diagnosis of musculoskeletal disorders(MSDs),such as osteoporosis and muscular atrophy.

关键词： Ultrasonic backscatter Musculoskeletal disorders Bone mineral density muscle mass Fat mass

Sonographic muscle mass assessment in patients after cardiac surgery

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World Journal of Cardiology 2020年第7期12卷 351-361页

作者： Stavros Dimopoulos Vasiliki Raidou Dimitrios Elaiopoulos Foteini Chatzivasiloglou Despoina Markantonaki Efterpi Lyberopoulou Ioannis Vasileiadis Katerina Marathias Serafeim Nanas Andreas Karabinis Department of Cardiac Surgery ICU Onassis Cardiac Surgery CenterAthens 17674Greece Clinical Ergospirometry Exercise and Rehabilitation LaboratoryNational and Kapodistrian University of AthensAthens 10676Greece

BACKGROUND Patients undergoing cardiac surgery particularly those with comorbidities and frailty,experience frequently higher rates of post-operative morbidity,mortality and prolonged hospital length of stay.muscle mass wasting seems to play important role in prolonged mechanical ventilation(MV)and consequently in intensive care unit(ICU)and hospital stay.AIM To investigate the clinical value of skeletal muscle mass assessed by ultrasound early after cardiac surgery in terms of duration of MV and ICU length of stay.METHODS In this observational study,we enrolled consecutively all patients,following their admission in the Cardiac Surgery ICU within 24 h of cardiac surgery.Bedside ultrasound scans,for the assessment of quadriceps muscle thickness,were performed at baseline and every 48 h for seven days or until ICU discharge.muscle strength was also evaluated in parallel,using the Medical Research Council(MRC)scale.RESULTS Of the total 221 patients enrolled,ultrasound scans and muscle strength assessment were finally performed in 165 patients(patients excluded if ICU staymuscle thickness of rectus femoris(RF),was slightly decreased by 2.2%[(95%confidence interval(CI):-0.21 to 0.15),n=9;P=0.729]and the combined muscle thickness of the vastus intermedius(VI)and RF decreased by 3.5%[(95%CI:-0.4 to 0.22),n=9;P=0.530].Patients whose combined VI and RF muscle thickness was below the recorded median values(2.5 cm)on day 1(n=80),stayed longer in the ICU(47±74 h vs 28±45 h,P=0.02)and remained mechanically ventilated more(17±9 h vs 14±9 h,P=0.05).Moreover,patients with MRC score≤48 on day 3(n=7),required prolonged MV support compared to patients with MRC score≥49(n=33),(44±14 h vs 19±9 h,P=0.006)and had a longer duration of extracorporeal circulation was(159±91 min vs 112±71 min,P=0.025).CONCLUSION Skeletal quadriceps muscle thickness assessed by ultrasound shows a trend to a decrease in patients after cardiac surgery post-ICU admission and is associated with prolonged duration of MV and ICU length of stay.

关键词： Intensive care unit-acquired weakness Cardiac surgery Skeletal muscle wasting muscle ultrasound Quadriceps femoris muscle mass

Relationship between muscle Strength, muscle mass and BMD in Postmenopausal Female of Zhuang in Guangxi Province of China

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Journal of Biosciences and Medicines 2022年第2期10卷 87-97页

作者： Peizhao Shi Songyi Mo Jiahui Li Qingxiu Feng Yuanxin Huang Xinling Ma Biao Li Ziyang Fang Huiling Liu Guangwu Huang Ling Tang Jinhua Wang Xiaoyan Fang School of Basic Medical Sciences Youjiang Medical University for Nationalities Baise China Department of Orthopedics Affiliated Hospital of Hebei University of Engineering Handan China Department of Clinical Medicine Medical School of Nanjing University Nanjing China Affiliated Hospital of Youjiang Medical University for Nationalities Baise China School of Nursing Youjiang Medical University for Nationalities Baise China West China School of Basic Medical Sciences & Forensic Medicine Sichuan University Chengdu China

Objective: To explore the correlation between muscle strength, muscle mass and bone mineral density (BMD) in Zhuang female population, body composition analysis and grip strength, and to analyze the possible influencing factors of BMD. Methods: 182 postmenopausal women were selected from Guangxi Province of China. Broadband ultrasound attenuation (BUA) was used to evaluate BMD. Grip dynamometer to assess muscle strength. Height, weight and muscle mass of each part were measured by body composition measuring instrument. Body mass index (BMI), skeletal muscle mass index (SMI) and limb skeletal muscle mass (SM) were calculated according to the measurement results. Results: BUA, grip strength and SMI in postmenopausal women of Zhuang nationality showed a decreasing trend with age (p p p r = 0.305, p Conclusion: With the increase of age, the decline rate of muscle strength of postmenopausal Zhuang women in Guangxi is slower than that of BMD and muscle mass. SM can better reflect the BMD level of the body than SMI, and the LSM is the main influencing factor of BMD.

关键词： muscle Strength muscle mass Musculoskeletal System Bone Mineral Density Postmenopausal Females

Comparison of the Two Algorithms of Skeletal muscle mass Index: An Observational Study in a Large Cohort of Chinese Adults

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Health 2022年第8期14卷 895-909页

作者： Ying Sui Zhen Huang Shengyong Dong Yansong Zheng Second Medical Center & National Clinical Research Center for Geriatric Diseases Chinese People’s Liberation Army General Hospital Beijing China Nanning First People’s Hospital (The Fifth Affiliated Hospital of Guangxi Medical University) Nanning China

Objective: To compare the two skeletal muscle mass index (SMI) algorithms. One is SMM [SMM(%) = total skeletal muscle mass (kg)/body weight mass (kg) × 100%];and the other is SMH [SMH (kg/m2) = total skeletal muscle mass (kg)/height (m)2]. Methods: Body composition, body mass index (BMI) and body fat percentage (BFP) were estimated using a bioelectrical impedance analyzer. SMI was calculated by the two algorithms described above, and measurement parameters were stratified by age, BMI and levels of physical activity. Results: Levels of BMI, BFP, SMM and SMH differed significantly between the sexes. BMI and BFP were positively associated with age, while SMM was negatively associated with age (β = −0.2294, P 0.05). Conclusions: SMM may be a more ideal and accurate clinical algorithm for SMI because it is more tightly associated with other body composition indices, as compared with SMH.

关键词： Physical Examination Body Weight muscle mass Skeletal muscle mass Index

Characteristics of Body Composition and Relationship between muscle mass and muscle Strength among Elderly Women in Different Age Groups

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Advances in Aging Research 2022年第5期11卷 135-149页

作者： Nao Nishioka Nishi Noriko Tanaka Naomi Hirano Graduate School of Life Sciences Kobe Women’s University Kobe Japan Department of Arts and Science Kobe Women’s Junior College Kobe Japan Department of Food and Nutrition Science Kobe Women’s Junior College Kobe Japan

Age-related changes in the body composition of older adults differ among age groups. The purpose of the present study was to clarify the characteristics of body compositions in young (age, 65 - 74 years;yE group) and old (age, ≥75 years;oE group) elderly women, and compare the relationship between muscle mass and strength in elderly women with that in young women for preventing motor function loss in older adults. A total of 30 elderly and 45 young women aged ≥ 65 and 19 - 22 years, respectively, participated in this study. The participants underwent body composition measurement via bioelectrical impedance analysis and examinations of handgrip and leg muscle strength. The age-related body composition changes varied among age groups. Compared with young women, fat-free mass (FFM) in the yE group did not decrease significantly;however, fat mass (FM) and waist-hip ratio (WHR) were significantly greater. Compared with the yE group, decreases in FFM, FM, and WHR in the oE group were significant;furthermore, the decrease in FM measurements was attributed to the loss of FM in the trunk and limbs (upper and lower). The measurement results suggested that the greater FM decrease in the oE group was characterized by decreases in both visceral and subcutaneous fat. In the yE group, the muscle mass was comparable to that in young women;however, there was a remarkable reduction in the lower-limb muscle mass (9% - 10%). In the oE group, muscle mass was reduced in all body parts, including upper and lower limbs and trunk. In young women, significant positive correlations between muscle mass and muscle strength in the upper and lower limbs were observed. No such correlations in the lower limbs were found in elderly women, indicating that muscle mass is not proportionally reflected in muscle strength. In conclusion, for improving and maintaining the health of elderly women, especially those above the age of 75 years, it is important to maintain muscle mass, including muscle strength, and prevent the loss of muscle quality.

关键词： Elderly Women Body Composition muscle mass muscle Strength

Longitudinal Changes in Sarcopenia Criteria in Older Men with Low Skeletal muscle mass Index:A 2-Year Observational Study

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Journal of Science in Sport and Exercise 2019年第1期1卷 59-68页

作者： Wolfgang Kemmler Simon von Stengel Stephanie Kast Cornel Sieber Ellen Freiberger Institute of Medical Physics Friedrich-Alexander University Erlangen-NürnbergHenkestrasse 9191052 ErlangenGermany Institute of Biomedicine of Aging University of Erlangen-Nürnberg90408 NürnbergGermany

Purpose Declines in muscle mass and function are inevitable during the aging process.However,what is the“normal age appropriate”decline of muscle mass and function?Further,is this decline uniform for muscle mass versus functions or between different functional abilities?Using recognized Sarcopenia criteria[i.***.skeletal muscle mass index(SMI)defined as appendicular skeletal muscle mass/height(kg/m^(2)),handgrip strength,gait velocity],the aim of the present project was to determine corresponding changes in community-dwelling men 70 years+with low SMI over a 2-year period.Methods One hundred and seventy-seven(177)men within the lowest SMI quartile of a recent epidemiologic study(n=965)were included in the 2-year follow-up analysis.muscle mass was determined via direct-segmental,multi-frequency Bio-Impedance-Analysis,handgrip strength was tested with a Jamar hand-dynamometer and habitual gait speed was assessed with photo sensors applying the 10 m protocol.Results SMI,handgrip strength and gait velocity all declined significantly(P<0.001;effect size,d′0.39-1.17),however,with significantly higher reductions(P<0.001)in functional compared with morphologic Sarcopenia criteria(P≤0.006).Less expected,handgrip strength featured a fourfold higher decline compared with gait velocity(−12.8±10.9%versus−3.5±9.0%).Conclusion We provided evidence for significant non-uniform changes of Sarcopenia criteria in a cohort of community dwell-ing men 70 years+with low SMI.We doubt that this result might be a particularity of the selected cohort;however,studies with other(older)cohorts should address this issue in more depth.Of practical relevance,our data further give implications for the prioritization of interventions that address Sarcopenia criteria in older community-dwelling men.

关键词： Sarcopenia muscle mass Handgrip strength Gait velocity Aging Older men

Does Normobaric Hypoxic Resistance Training Confer Benefit over Normoxic Training in Athletes?A Narrative Review

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Journal of Science in Sport and Exercise 2022年第4期4卷 306-314页

作者： Louise Deldicque Institute of Neuroscience UCLouvainLouvain-la-NeuveBelgium

Purpose The aim of the present review was to focus on normobaric hypoxic resistance training and to discuss to what extent this method can be efficient for athletes to potentiate classical adaptations to resistance training and thereby performance.Methods Search terms related to the topic of the present review such as normobar*,hypox*,resistance exercise,resistance training and performance were inserted in Pubmed and Scopus.In total,16 articles made the core of this narrative review.Results Based on the available literature,2-3 sessions a week performed in hypoxic conditions for 4-6 weeks with a F_(i)O_(2)of 0.14-0.15 should recommended to athletes looking at potentiating the effects of resistance training.A large range of loads has been found to be efficient at inducing physiological effects in hypoxic vs normoxic conditions,from 20%to 90%of the 1-RM.Ideally,at least the last set should be performed to failure,if not all.Also,inter-set rest periods should be around 30 s for low-load exercise(30%-40%1-RM),around 60 s for moderate-load exercise(60%-70%1-RM)and 2 min for high-load exercise(85%-90%1-RM).Conclusion While there is no one size fits all and certainly no guarantee of added value over normoxic training,each athlete looking at potentiating the effects of resistance training should try to implement some sessions in hypoxic conditions.Based on the individual response,subtle improvements may be expected on muscle strength and mass,velocity and power,as well as hormonal responses to resistance training.

关键词： muscle mass Strength F_(i)O_(2) Hypoxic chamber Performance