Article
Agriculture, Dairy & Animal Science
Luke K. Fuerniss, Bradley J. Johnson
Summary: This study validated a semi-automated workflow that can efficiently and objectively identify the type and measure the size of muscle fibers compared to a manual technique. The semi-automated workflow is six times faster than the manual workflow and yields similar results. This study demonstrates the efficiency and objectivity of the semi-automated workflow in imaging, classifying, and measuring muscle fibers.
JOURNAL OF ANIMAL SCIENCE
(2023)
Article
Food Science & Technology
Sumin Song, Chi-Hoon Ahn, Mingeun Song, Gap-Don Kim
Summary: The study found that the direction of cut for pork loin chops significantly affected muscle fiber characteristics and meat quality, with F-Parallel group showing larger muscle fibers and more pronounced discoloration, purge loss, and reduced tenderness after aging. Freeze-thawing accelerated meat quality deterioration, particularly in water-holding capacity and tenderness, with F-Parallel group being the most affected.
Article
Radiology, Nuclear Medicine & Medical Imaging
Ciara R. Kelly, Marina Mourtzakis, Helena Furberg, Puneeta Tandon, Michael T. Paris
Summary: This study aims to evaluate the association between rectus abdominis muscle thickness and cross-sectional area (CSA), and examine the potential confounding effect of visceral adipose tissue (VAT) on the validity of rectus abdominis muscle thickness. The results suggest that rectus abdominis muscle thickness can be used as a measurement of muscle size in both women and men, with a minor confounding effect of the VAT compartment in men.
ACADEMIC RADIOLOGY
(2022)
Article
Endocrinology & Metabolism
Jie Cao, Didi Zuo, Tingting Han, Hongxia Liu, Wenwen Liu, Jia Zhang, Yurong Weng, Xian Jin, Zengai Chen, Yaomin Hu
Summary: Skeletal muscle mass plays a crucial role in health and disease. This study found a strong correlation between erector spinae muscle area assessed from chest CT and bioelectrical impedance analysis (BIA), especially in male subjects and obese individuals.
FRONTIERS IN ENDOCRINOLOGY
(2022)
Article
Food Science & Technology
Michelle N. LeMaster, Robyn D. Warner, Surinder S. Chauhan, Darryl N. D'Souza, Frank R. Dunshea
Summary: This meta-regression analysis aimed to investigate the relationship between fibre type cross-sectional area (CSA) and frequency (%) and meat quality traits, specifically tenderness. The results showed that only pH, WBSF, and drip loss were significantly associated with fibre type frequency and CSA (p < 0.05). When limited to pork analysis, it was found that frequency of type I fibres was associated with decreased drip loss, increased cook loss, decreased lightness (L*), and increased sensory tenderness, while frequency of type IIb fibres was associated with increased drip loss (p < 0.05). Additionally, CSA of type I and IIb fibres was correlated with color traits of lightness and redness (p < 0.05). Further research should focus on different breeds and muscles to enhance understanding of the effects of fibre type frequency and CSA on meat quality.
Article
Medicine, General & Internal
Soo Yeon Park, Kyoung Ho Yoon, Sung Hyun Hwang, Taeg Su Ko, Hee Sung Lee
Summary: Weakening muscle strength around the knee makes it more susceptible to aging-related damage. This study found an association between knee flexor muscle strength and its cross-sectional area (CSA), and observed that both flexor muscle strength and CSA decrease with aging.
Article
Medicine, General & Internal
Hamidullah Salimi, Shoichiro Ohyama, Hidetomi Terai, Yusuke Hori, Shinji Takahashi, Masatoshi Hoshino, Akito Yabu, Hasibullah Habibi, Akio Kobayashi, Tadao Tsujio, Shiro Kotake, Hiroaki Nakamura
Summary: This study found that bioelectrical impedance analysis is a reliable method to assess trunk muscle mass and correlates with traditional quantitative and functional assessments of trunk muscles.
JOURNAL OF CLINICAL MEDICINE
(2021)
Article
Multidisciplinary Sciences
Paul Ritsche, Philipp Wirth, Martino Franchi, Oliver Faude
Summary: This study presents a novel semi-automatic ImageJ script (ACSAuto) for quantifying lower limb muscle ACSA, which shows good reliability compared to manual analysis. The script demonstrates high consistency and small mean bias when compared to manual measurements, potentially reducing time needed for evaluating ultrasound images.
SCIENTIFIC REPORTS
(2021)
Article
Multidisciplinary Sciences
Yumin Wang, Satoshi Ikeda, Katsunori Ikoma
Summary: This study investigated the effects of passive repetitive stretching on muscle mass, myofiber cross-sectional area, protein synthesis pathways, and myogenic regulatory factors in senescence-accelerated mice. The findings suggest that passive stretching can lead to muscle hypertrophy and counteract muscle atrophy mainly by provoking protein turnover. These results are valuable for clinical muscle strengthening and sarcopenia prevention.
SCIENTIFIC REPORTS
(2021)
Article
Agriculture, Multidisciplinary
Hanna Dai, Xiaoling Chen, Daiwen Chen, Bing Yu, Jun He, Hong Chen, Hui Yan, Ping Zheng, Yuheng Luo, Zhiqing Huang
Summary: This study demonstrated that dietary supplementation of 1000 ppm l-theanine can improve pork quality, reduce drip loss, and promote muscle fiber transformation from fast-twitch to slow-twitch.
JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE
(2023)
Article
Physiology
Bradley A. Ruple, Paulo H. C. Mesquita, Joshua S. Godwin, Casey L. Sexton, Shelby C. Osburn, Mason C. McIntosh, Andreas N. Kavazis, Cleiton A. Libardi, Kaelin C. Young, Michael D. Roberts
Summary: Changes in myofibre cross-sectional area, fascicle length, and pennation angle following resistance training did not collectively predict changes in whole-muscle cross-sectional area. This suggests that myofibre hypertrophy is not directly associated with whole-muscle hypertrophy.
EXPERIMENTAL PHYSIOLOGY
(2022)
Article
Cell Biology
Hind Albadrani, Tarek Ammar, Rashida Rajgara, Michael Bader, Nadine Wiper-Bergeron, Jean-Marc Renaud
Summary: Recent studies have shown that angiotensin 1-7 (Ang 1-7), through its receptor Mas (MasR), can prevent muscle atrophy and improve muscle integrity and function. This study demonstrates that Ang 1-7 has a hypertrophic effect on muscle mass and fiber cross-sectional area, and enhances muscle contractile function. These effects are mediated by the MasR receptor.
AMERICAN JOURNAL OF PHYSIOLOGY-CELL PHYSIOLOGY
(2022)
Article
Rehabilitation
Andrea Thorey Hjaltadottir, Dadi Hafsteinsson, Arni Arnason, Kristin Briem
Summary: This study used ultrasound imaging to investigate the muscle condition of athletes who had undergone anterior cruciate ligament reconstruction (ACLR). The results showed that there was selective atrophy of the semitendinosus muscle on the injured side, without compensatory hypertrophy of the biceps femoris muscle.
PHYSIOTHERAPY THEORY AND PRACTICE
(2022)
Article
Sport Sciences
P. A. U. L. Ritsche, P. H. I. L. I. P. P. Wirth, N. E. I. L. J. Cronin, F. A. B. I. O. Sarto, M. A. R. C. O. V. Narici, O. L. I. V. E. R. Faude, M. A. R. T. I. N. O. V. Franchi
Summary: This study introduces DeepACSA, a deep learning approach for automatic segmentation of anatomical cross-sectional area in panoramic ultrasound images of human muscles. Results show that DeepACSA provides fast and objective segmentation comparable to manual analysis and semi-automated algorithms.
MEDICINE & SCIENCE IN SPORTS & EXERCISE
(2022)
Article
Geriatrics & Gerontology
Peng Gao, Da Gan, Shanshan Li, Qingcong Kang, Xiaoyan Wang, Weifang Zheng, Xiaochen Xu, Xueyin Zhao, Wei He, Joyce Wu, Ying Lu, Ann W. Hsing, Shankuan Zhu
Summary: This study examined the associations between body flexibility and sarcopenia. The results showed that high flexibility was inversely associated with low muscle mass, low muscle strength, and sarcopenia. Furthermore, increasing flexibility was associated with a reduced risk of incident low muscle mass, low muscle strength, and sarcopenia.
JOURNAL OF CACHEXIA SARCOPENIA AND MUSCLE
(2023)