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Liu C, Wong PY, Chung YL, Chow SKH, Cheung WH, Law SW, Chan JCN, Wong RMY. Deciphering the "obesity paradox" in the elderly: A systematic review and meta-analysis of sarcopenic obesity. Obes Rev 2023; 24:e13534. [PMID: 36443946 DOI: 10.1111/obr.13534] [Citation(s) in RCA: 43] [Impact Index Per Article: 43.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/25/2022] [Revised: 10/20/2022] [Accepted: 11/16/2022] [Indexed: 11/30/2022]
Abstract
Aging and obesity are two global concerns in public health. Sarcopenic obesity (SO), defined as the combination of age-related sarcopenia and obesity, has become a pressing issue. This systematic review and meta-analysis summarize the current clinical evidence relevant to SO. PubMed, Embase, and Web of Science were searched, and 106 clinical studies with 167,151 elderlies were included. The estimated prevalence of SO was 9% in both men and women. Obesity was associated with 34% reduced risk of sarcopenia (odds ratio [OR] 0.66, 95% CI 0.48-0.91; p < 0.001). The pooled hazard ratio (HR) of all-cause mortality was 1.51 (95% CI 1.14-2.02; p < 0.001) for people with SO compared with healthy individuals. SO was associated with increased risk of cardiovascular disease and related mortality, metabolic disorders, cognitive impairment, arthritis, functional limitation, and lung diseases (all ORs > 1.0, p < 0.05). The attenuated risk of sarcopenia in elderlies with obesity ("obesity paradox") was dependent on higher muscle mass and strength. Apart from unifying the diagnosis of SO, more research is needed to subphenotype people with obesity and sarcopenia for individualized treatment. Meanwhile, the maintenance of proper body composition of muscle and fat may delay or attenuate the adverse outcomes of aging.
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Affiliation(s)
- Chaoran Liu
- Department of Orthopaedics & Traumatology, The Chinese University of Hong Kong, Hong Kong SAR, China
| | - Pui Yan Wong
- Department of Orthopaedics & Traumatology, The Chinese University of Hong Kong, Hong Kong SAR, China
| | - Yik Lok Chung
- Department of Orthopaedics & Traumatology, The Chinese University of Hong Kong, Hong Kong SAR, China
| | - Simon Kwoon-Ho Chow
- Department of Orthopaedics & Traumatology, The Chinese University of Hong Kong, Hong Kong SAR, China
| | - Wing Hoi Cheung
- Department of Orthopaedics & Traumatology, The Chinese University of Hong Kong, Hong Kong SAR, China
| | - Sheung Wai Law
- Department of Orthopaedics & Traumatology, The Chinese University of Hong Kong, Hong Kong SAR, China
| | - Juliana Chung Ngor Chan
- Department of Medicine & Therapeutics, The Chinese University of Hong Kong, Hong Kong SAR, China
| | - Ronald Man Yeung Wong
- Department of Orthopaedics & Traumatology, The Chinese University of Hong Kong, Hong Kong SAR, China
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Nutrition Strategies Promoting Healthy Aging: From Improvement of Cardiovascular and Brain Health to Prevention of Age-Associated Diseases. Nutrients 2022; 15:nu15010047. [PMID: 36615705 PMCID: PMC9824801 DOI: 10.3390/nu15010047] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2022] [Revised: 12/19/2022] [Accepted: 12/21/2022] [Indexed: 12/24/2022] Open
Abstract
BACKGROUND An increasing number of studies suggest that diet plays an important role in regulating aging processes and modulates the development of the most important age-related diseases. OBJECTIVE The aim of this review is to provide an overview of the relationship between nutrition and critical age-associated diseases. METHODS A literature review was conducted to survey recent pre-clinical and clinical findings related to the role of nutritional factors in modulation of fundamental cellular and molecular mechanisms of aging and their role in prevention of the genesis of the diseases of aging. RESULTS Studies show that the development of cardiovascular and cerebrovascular diseases, neurodegenerative diseases, cognitive impairment and dementia can be slowed down or prevented by certain diets with anti-aging action. The protective effects of diets, at least in part, may be mediated by their beneficial macro- (protein, fat, carbohydrate) and micronutrient (vitamins, minerals) composition. CONCLUSIONS Certain diets, such as the Mediterranean diet, may play a significant role in healthy aging by preventing the onset of certain diseases and by improving the aging process itself. This latter can be strengthened by incorporating fasting elements into the diet. As dietary recommendations change with age, this should be taken into consideration as well, when developing a diet tailored to the needs of elderly individuals. Future and ongoing clinical studies on complex anti-aging dietary interventions translating the results of preclinical investigations are expected to lead to novel nutritional guidelines for older adults in the near future.
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Muanjai P, Namsawang J, Satkunskienė D, Kamandulis S. Associations between Muscle-Tendon Morphology and Functional Movements Capacity, Flexibility, and Balance in Older Women. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2022; 19:16099. [PMID: 36498173 PMCID: PMC9738910 DOI: 10.3390/ijerph192316099] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/17/2022] [Revised: 11/24/2022] [Accepted: 11/29/2022] [Indexed: 06/17/2023]
Abstract
Loss of functional movement capacity in older adults is related to adverse changes in musculotendinous morphology, but this relationship is poorly understood. This study examined the associations between musculotendinous morphology and functional movements, flexibility, and balance ability. Ninety-nine older women (66.6 ± 4.6 years, body mass index 23.5 ± 3.3 kg∙m−2) were recruited from Chonburi Province, Thailand. During one 90-min visit, muscle ultrasound imaging of vastus lateralis, biceps femoris, and medial gastrocnemius muscles, and tendon ultrasonography of the Achilles tendon and patellar tendon were performed. Measures were also obtained for the straight leg raise, passive dorsiflexion, balance, and functional tests (Five Times Sit to Stand (5TSTS), Timed Up and Go (TUG), 10-Meter Fast Walk Test (10-MFWT), and 6-Minute Walk Test (6-MWT)). The results specify that functional movement performance correlates most strongly with medial gastrocnemius muscle thickness (5TSTS (r = −0.26), TUG (r = −0.44), 10-MFWT (r = 0.41), and 6-MWT (r = 0.48) all p < 0.05) and that vastus lateralis muscle thickness and medial gastrocnemius muscle thickness correlate positively with balance ability (r = 0.24, 0.34; p < 0.05) and negatively with fear of falling. It appears that muscle mass, rather than other morphological parameters, such as muscle quality or fascicle length, is the main factor affecting the susceptibility of older women to frailty.
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Affiliation(s)
- Pornpimol Muanjai
- Department of Physical Therapy, Allied Health Sciences Faculty, Burapha University, Chonburi 20131, Thailand
- Exercise and Nutrition Innovation and Sciences Research Unit, Burapha University, Chonburi 20131, Thailand
| | - Juntip Namsawang
- Department of Physical Therapy, Allied Health Sciences Faculty, Burapha University, Chonburi 20131, Thailand
- Exercise and Nutrition Innovation and Sciences Research Unit, Burapha University, Chonburi 20131, Thailand
| | - Danguole Satkunskienė
- Institute of Sport Science and Innovations, Lithuanian Sports University, 44221 Kaunas, Lithuania
| | - Sigitas Kamandulis
- Institute of Sport Science and Innovations, Lithuanian Sports University, 44221 Kaunas, Lithuania
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Valera-Calero JA, Fernández-de-Las-Peñas C, Cleland JA, Varol U, Ortega-Santiago R, Arias-Buría JL. Ultrasound assessment of deep cervical extensors morphology and quality in populations with whiplash associated disorders: An intra- and inter-examiner reliability study. Musculoskelet Sci Pract 2022; 59:102538. [PMID: 35272960 DOI: 10.1016/j.msksp.2022.102538] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/17/2021] [Revised: 02/12/2022] [Accepted: 02/21/2022] [Indexed: 11/16/2022]
Abstract
BACKGROUND Ultrasound imaging (US) has shown to be a reliable and valid tool for assessing muscle morphology and quality. However, most studies have focused on asymptomatic populations. OBJECTIVE To investigate intra- and inter-rater reliability estimates of muscle morphology and quality of cervical multifidus (CM) and short rotators (SR) in patients with whiplash associated disorders (WAD). DESIGN An intra- and inter-examiner reliability study. METHODS US images were acquired in a blinded fashion in 34 patients (35% males) by two experienced and two novice examiners. Cross-sectional area (CSA), perimeter, mean echo-intensity (EI) and the percentage of fatty infiltration were assessed twice, one-week apart, in a randomized order. Reliability estimates (i.e., intra-class correlation coefficients -ICC-, standard error of measurement -SEM-, minimal detectable change, mean of measurements, absolute and percent errors) were calculated. RESULTS Intra-examiner reliability for experienced assessors ranged from good to excellent for CM and SR (ICC3,1 = 0.888-0.975 and 0.810-0.964 respectively) and from moderate-to-good for novices (ICC3,1 = 0.708-0.790 and 0.655-0.796 respectively). The agreement between the experienced examiners was moderate to good (ICC3,2 = 0.737-0.899 and 0.728-0.899 CM and SR respectively); between novice and experienced examiners was moderate to good (ICC3,2 = 0.617-0.873 and 0.657-0.766 CM and SR respectively); and between novice examiners was moderate-to-good for CM (ICC3,2 = 0.610-0.777) and moderate for SR (ICC3,2 = 0.600-0.730). CONCLUSION CM and SR intra-examiner reliability was good-to-excellent for novice and experienced examiners. However, inter-examiner reliability was clinically acceptable just for experienced examiners at the C4/C5 level in WAD populations.
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Affiliation(s)
- Juan Antonio Valera-Calero
- Department of Physiotherapy, Faculty of Health, Universidad Camilo José Cela, Villanueva de la Cañada, Madrid, Spain; VALTRADOFI Research Group, Department of Physiotherapy, Faculty of Health, Universidad Camilo José Cela, Villanueva de la Cañada, Madrid, Spain.
| | - César Fernández-de-Las-Peñas
- Department of Physical Therapy, Occupational Therapy, Rehabilitation and Physical Medicine, Universidad Rey Juan Carlos, Alcorcón, Spain; Cátedra Institucional en Docencia, Clínica e Investigación en Fisioterapia: Terapia Manual, Punción Seca y Ejercicio Terapéutico, Universidad Rey Juan Carlos, Alcorcón, Madrid, Spain
| | - Joshua A Cleland
- Doctor of Physical Therapy Program, Department of Public Health and Community Medicine, Tufts University School of Medicine, Boston, Mass, USA
| | - Umut Varol
- VALTRADOFI Research Group, Department of Physiotherapy, Faculty of Health, Universidad Camilo José Cela, Villanueva de la Cañada, Madrid, Spain
| | - Ricardo Ortega-Santiago
- Department of Physical Therapy, Occupational Therapy, Rehabilitation and Physical Medicine, Universidad Rey Juan Carlos, Alcorcón, Spain; Cátedra Institucional en Docencia, Clínica e Investigación en Fisioterapia: Terapia Manual, Punción Seca y Ejercicio Terapéutico, Universidad Rey Juan Carlos, Alcorcón, Madrid, Spain
| | - José Luis Arias-Buría
- Department of Physical Therapy, Occupational Therapy, Rehabilitation and Physical Medicine, Universidad Rey Juan Carlos, Alcorcón, Spain; Cátedra Institucional en Docencia, Clínica e Investigación en Fisioterapia: Terapia Manual, Punción Seca y Ejercicio Terapéutico, Universidad Rey Juan Carlos, Alcorcón, Madrid, Spain
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Arieta LR, Giuliani-Dewig HK, Gerstner GR, Mota JA, Ryan ED. Segmental bioelectrical impedance spectroscopy: A novel field assessment of muscle size and quality in normal weight and obese older men. Exp Gerontol 2022; 162:111745. [DOI: 10.1016/j.exger.2022.111745] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2021] [Revised: 02/02/2022] [Accepted: 02/15/2022] [Indexed: 11/26/2022]
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Masaki M, Minakawa K, Takeuchi M, Kasahara M, Inagaki Y, Ogawa Y, Sato Y, Yokota M, Maruyama S, Usuki R, Azuma S. Association of mobility capacity with the masses and amounts of intramuscular non-contractile tissue of the trunk and lower extremity muscles in community-dwelling older adults. Hum Mov Sci 2021; 80:102887. [PMID: 34678579 DOI: 10.1016/j.humov.2021.102887] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2021] [Revised: 08/29/2021] [Accepted: 10/04/2021] [Indexed: 10/20/2022]
Abstract
We examined the association of mobility capacity with muscle thicknesses and echo intensities of the trunk and lower extremity muscles measured using an ultrasound imaging device in community-dwelling older adults. The participants were 57 community-dwelling older adults. Mobility capacity was assessed based on the measurement of usual and maximal walking speeds and timed up-and-go (TUG) time. Muscle thickness and echo intensity of the trunk and lower extremity muscles were measured using an ultrasound imaging device. Finally, sagittal spinal alignment was assessed based on the measurement of thoracic kyphosis, lumbar lordosis, and sacral anterior inclination angles in the standing position using a Spinal Mouse. Stepwise regression analysis showed that the tibialis anterior muscle thickness, tibialis posterior muscle echo intensity, and body weight were significant and independent factors of usual walking speed, with a coefficient of determination (R2) of 0.25. The thicknesses of the thoracic erector spinae and obliquus externus abdominis muscles were significant and independent factors of maximal walking speed (R2 = 0.26). Moreover, only age was a significant and independent factor for TUG time (R2 = 0.10). The results of this study suggested associations 1) between slow usual walking speed and low tibialis anterior muscle thicknesses and high echo intensity of the tibialis posterior muscle and 2) between slow maximal walking speed and low thoracic erector spinae and obliquus externus abdominis thicknesses in community-dwelling older adults.
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Affiliation(s)
- Mitsuhiro Masaki
- Department of Physical Therapy, Takasaki University of Health and Welfare, Gunma 501 Nakaorui-machi, Takasaki 370-0033, Japan.
| | - Kota Minakawa
- Tsutsumi Orthopaedic Clinic, Akita 3-8-24 Terauchidonosawa, Akita 011-0901, Japan.
| | - Moeka Takeuchi
- Department of Rehabilitation, Iwamuro Rehabilitation Hospital, Niigata 772-1 Iwamuronsen, Nishikan-ku, Niigata 953-0104, Japan.
| | - Maki Kasahara
- Department of Rehabilitation, Tsunoda Hospital, Gunma 675-4 Kamishinden, Tamamura-machi, Sawagun 370-1133, Japan.
| | - Yukika Inagaki
- Department of Rehabilitation, Hanna Sawarabi Ryoikuen, Gunma 28-30 Harunasan-machi, Takasaki 370-3341, Japan.
| | - Yukine Ogawa
- Department of Rehabilitation, Sannocho Hospital, Niigata 5-2-30 Hon-cho, Sanjo 955-0071, Japan.
| | - Yoshino Sato
- Suzuki Otolaryngology Clinic, Niigata 6-5-37 Meike, Chuo-ku, Niigata 950-0941, Japan.
| | - Minori Yokota
- Department of Rehabilitation, Takeda General Hospital, Fukushima 3-27 Yamaga-machi, Aizuwakamatsu 965-8585, Japan.
| | - Seina Maruyama
- Department of Physical Therapy, Niigata University of Health and Welfare, Niigata 1398 Shimami-cho, Kita-ku, Niigata 950-3198, Japan.
| | - Ryoko Usuki
- Department of Welfare for the Elderly, Shibata City, Niigata 3-3-3 Chuo-cho, Shibata 957-8686, Japan.
| | - Satomi Azuma
- Iwakura Community General Support Center, Kyoto 1255 Iwakuranagatani-cho, Sakyo-ku, Kyoto 606-0026, Japan
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Deng M, Liang C, Yin Y, Shu J, Zhou X, Wang Q, Hou G, Wang C. Ultrasound assessment of the rectus femoris in patients with chronic obstructive pulmonary disease predicts poor exercise tolerance: an exploratory study. BMC Pulm Med 2021; 21:304. [PMID: 34563152 PMCID: PMC8466975 DOI: 10.1186/s12890-021-01663-8] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2021] [Accepted: 09/01/2021] [Indexed: 12/18/2022] Open
Abstract
Background Reduced exercise tolerance is an important clinical feature of chronic obstructive pulmonary disease (COPD) and is associated with poor prognosis. The 6-min walk test (6MWT) is widely used to assess exercise capacity; however, it is not commonly administered in primary medical institutions because it requires a suitable site and professional training. Ultrasound has great potential for evaluating skeletal muscle dimensions in COPD. However, whether skeletal muscle ultrasound can predict impaired exercise tolerance is unclear. Methods The study included 154 stable patients with COPD, who were randomly divided into a development set and a validation set. The thickness (RFthick) and cross-sectional area (RFcsa) of the rectus femoris were measured using ultrasound. Standardized RFthick (STD- RFthick) and Standardized RFcsa (STD-RFcsa) were obtained via standardization of RFthick and RFcsa by patients' height. Results Strong correlations were observed between the 6MWD and RFthick (r = 0.84, p < 0.001) and between the 6MWD and RFcsa (r = 0.81, p < 0.001). In the development set, the optimal cut-off values for men and women for predicting poor exercise tolerance were < 3.098 cm/m and < 3.319 cm/m for STD-RFthick and < 4.052 cm2/m and < 4.366 cm2/m for STD-RFcsa, respectively. In the validation set, the area under the curve (AUC) values for the prediction of a 6MWD < 350 by STD-RFthick and STD-RFcsa were 0.881 and 0.903, respectively. Finally, the predictive efficacy of STD-RFthick (AUC: 0.922), STD-RFcsa (AUC: 0.904), and the derived nomogram model (AUC: 0.98) for exercise tolerance was superior to that of the sit-to-stand test and traditional clinical features. Conclusions Rectus femoris ultrasound has potential clinical application to predict impaired exercise tolerance in patients with COPD. Supplementary Information The online version contains supplementary material available at 10.1186/s12890-021-01663-8.
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Affiliation(s)
- Mingming Deng
- Department of Pulmonary and Critical Care Medicine, Center of Respiratory Medicine, China-Japan Friendship Hospital, Beijing, 100029, China.,Graduate School of Peking Union Medical College, Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing, 100029, China.,National Center for Respiratory Medicine, Beijing, 100029, China.,Institute of Respiratory Medicine, Chinese Academy of Medical Sciences, Beijing, 100029, China.,National Clinical Research Center for Respiratory Diseases, Beijing, 100029, China
| | - Chaonan Liang
- Department of Pulmonary and Critical Care Medicine, First Hospital of China Medical University, Shenyang, 110001, China
| | - Yan Yin
- Department of Pulmonary and Critical Care Medicine, First Hospital of China Medical University, Shenyang, 110001, China
| | - Jun Shu
- Institute of Clinical Medical Science, China-Japan Friendship Hospital, Beijing, 100029, China
| | - Xiaoming Zhou
- Department of Pulmonary and Critical Care Medicine, Fourth Hospital of China Medical University, Shenyang, 110001, China
| | - Qiuyue Wang
- Department of Pulmonary and Critical Care Medicine, First Hospital of China Medical University, Shenyang, 110001, China
| | - Gang Hou
- Department of Pulmonary and Critical Care Medicine, Center of Respiratory Medicine, China-Japan Friendship Hospital, Beijing, 100029, China. .,Graduate School of Peking Union Medical College, Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing, 100029, China. .,National Center for Respiratory Medicine, Beijing, 100029, China. .,Institute of Respiratory Medicine, Chinese Academy of Medical Sciences, Beijing, 100029, China. .,National Clinical Research Center for Respiratory Diseases, Beijing, 100029, China.
| | - Chen Wang
- Department of Pulmonary and Critical Care Medicine, Center of Respiratory Medicine, China-Japan Friendship Hospital, Beijing, 100029, China. .,Graduate School of Peking Union Medical College, Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing, 100029, China. .,National Center for Respiratory Medicine, Beijing, 100029, China. .,Institute of Respiratory Medicine, Chinese Academy of Medical Sciences, Beijing, 100029, China. .,National Clinical Research Center for Respiratory Diseases, Beijing, 100029, China. .,Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 10029, China.
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Bieler T, Kristensen ALR, Nyberg M, Magnusson SP, Kjaer M, Beyer N. Exercise in patients with hip osteoarthritis - effects on muscle and functional performance: A randomized trial. Physiother Theory Pract 2021; 38:1946-1957. [PMID: 33956561 DOI: 10.1080/09593985.2021.1923096] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
Background: It is believed that clinical management of osteoarthritis should address muscle weakness to improve physical function and prevent disability and frailty.Objectives: This sub-study investigated the effects of supervised progressive resistance training (RT), supervised Nordic Walking (NW), and unsupervised home-based exercise (HBE) on muscle and functional performance; and associations between these exercise-induced changes in persons with hip osteoarthritis.Methods: Forty-two patients with hip osteoarthritis were recruited from a larger RCT (NCT01387867). All the groups (RT, n = 15; NW, n = 12; HBE, n = 15) exercised 1 h 3 times/week for 4 months. Quadriceps cross-sectional area (QCSA, MRI-determined); quadriceps strength (QMVC); leg extensor power (LEP); functional performance (chair stands (30sCS); stair climbs (TSC); and 6-minute walk (6MWT)) were assessed at baseline and 4 months.Results: Per protocol analyses (one-way ANOVA and Bonferroni test) showed significant between-group differences for improvements in QCSA in the most symptomatic leg favoring RT versus NW (2.3 cm2, 95% CI [0.6, 3.9]) and HBE (2.3 cm2 [0.8, 3.9]); and 30sCS (1.8 repetitions [0.2-3.3]), and 6MWT (35.1 m [3.5-66.7]) favoring NW versus HBE. Associations existed between exercise-induced changes in QCSA and QMVC (r = 0.366, p = .019) for the most symptomatic leg and between changes in 6MWT and QMVC (r = 0.320, p = .04) and LEP (r = 0.381, p = .01), respectively, for the least symptomatic leg.Conclusions: Resistance training appeared effective for improving muscle mass, but less effective for improving muscle strength, power, and functional performance. Only exercise-induced changes in muscle strength and power of the least symptomatic leg, not the most symptomatic leg, were related to changes in functional performance.
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Affiliation(s)
- Theresa Bieler
- Department of Physical and Occupational Therapy, Copenhagen University Hospital - Bispebjerg Frederiksberg, Copenhagen NV, Denmark
| | | | - Mette Nyberg
- Department of Physiotherapy and Occupational Therapy, Naestved, Slagelse and Ringsted Hospitals, Slagelse, Denmark
| | - S Peter Magnusson
- Department of Physical and Occupational Therapy, Copenhagen University Hospital - Bispebjerg Frederiksberg, Copenhagen NV, Denmark.,Institute of Sports Medicine, Department of Orthopedic Surgery, Copenhagen University Hospital - Bispebjerg Frederiksberg, Copenhagen NV, Denmark.,Center for Healthy Aging, University of Copenhagen, Copenhagen, Denmark
| | - Michael Kjaer
- Institute of Sports Medicine, Department of Orthopedic Surgery, Copenhagen University Hospital - Bispebjerg Frederiksberg, Copenhagen NV, Denmark.,Center for Healthy Aging, University of Copenhagen, Copenhagen, Denmark
| | - Nina Beyer
- Department of Physical and Occupational Therapy, Copenhagen University Hospital - Bispebjerg Frederiksberg, Copenhagen NV, Denmark.,Institute for Clinical Medicine, University of Copenhagen, Copenhagen N, Denmark
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Giuliani HK, Laffan MR, Trivisonno AJ, Gerstner GR, Mota JA, Arieta LR, Ryan ED. Measuring muscle quality: associations between echo intensity and normalized strength and power. Physiol Meas 2021; 42. [PMID: 33636708 DOI: 10.1088/1361-6579/abea24] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2021] [Accepted: 02/26/2021] [Indexed: 11/11/2022]
Abstract
OBJECTIVE Muscle quality has received considerable attention within the literature due to its influence on health and performance. However, it has been assessed by various measures (e.g. ultrasound imaging, normalized strength), contributing to the lack of a consensus definition. The purpose of this study was to investigate the association between common muscle quality measures: vastus lateralis echo intensity (EI) and peak torque (PT) and power (PP) normalized to thigh lean mass (TLM) and thigh fat mass (TFM). APPROACH Participants' body composition was assessed via dual-energy Xray absorptiometry and custom thigh analysis. Subcutaneous fat-correction muscle EI was assessed via ultrasonography. Maximal strength and power assessments of the dominant leg extensors were completed. Maximal PT and PP was normalized to TLM and TFM, respectively. Pearson product-moment correlations were used to determine the relationships between EI and PT/TLM, PT/TFM, PP/TLM, and PP/TFM. MAIN RESULTS Greater muscle EI was significantly related with lower PT/TFM and PP/TFM (r=-0.74 - -0.70, P<0.001), but unrelated to PT/TLM or PP/TLM (P≥0.205). SIGNIFICANCE These findings suggest that muscle EI and normalized strength and power may not be used interchangeably to define muscle quality, and muscle EI may be more sensitive to the adiposity of the limb. Future studies should consider using unique definitions for these separate measures.
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Affiliation(s)
- Hayden K Giuliani
- Department of Exercise and Sport Science, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, UNITED STATES
| | - Megan R Laffan
- Department of Exercise and Sport Science, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, UNITED STATES
| | - Abigail J Trivisonno
- Department of Exercise and Sport Science, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, UNITED STATES
| | - Gena R Gerstner
- Department of Human Movement Sciences, Old Dominion University, Norfolk, Virginia, UNITED STATES
| | - Jacob A Mota
- Department of Kinesiology, The University of Alabama System, Tuscaloosa, Alabama, UNITED STATES
| | - Luke R Arieta
- Department of Exercise and Sport Science, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, UNITED STATES
| | - Eric D Ryan
- Department of Exercise and Sport Science, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, UNITED STATES
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