Article
Chemistry, Analytical
Jinyeol Yoo, Jihun Kim, Byunggon Hwang, Gyuseok Shim, Jaehyo Kim
Summary: This study proposes a simpler and safer method for measuring 1RM using a hydraulic fitness machine. Results show that there is no significant difference between 1RM measurements using the hydraulic machine and the traditional plate-loaded machine. By deriving a 1RM equation and simplifying it into a first-order polynomial expression, the researchers have successfully simplified the 1RM measurement process, requiring a maximum of three repetitions.
Article
Multidisciplinary Sciences
Diogo Luis Marques, Henrique Pereira Neiva, Daniel Almeida Marinho, Ivan Miguel Pires, Celia Nunes, Mario Cardoso Marques
Summary: This study aimed to determine the load-velocity relationship in the seated chest press in older adults, and compare the magnitude of the relationship between peak and mean velocity with the relative load. It also analyzed the differences between sexes in movement velocity for each relative load in the chest press. The results showed strong quadratic load-velocity relationships in both men and women, with no differences in the magnitude of the relationship between peak and mean velocity with the relative load. Men had higher lifting velocities than women in almost all relative loads, except for 95-100% 1RM.
Article
Biotechnology & Applied Microbiology
M. A. Greene, A. N. S. Udoka, R. R. Powell, R. E. Noorai, T. Bruce, S. K. Duckett
Summary: This study investigated the impact of in utero mycotoxin exposure on skeletal muscle fiber hypertrophy and the miRNA profile in lambs. The results showed that exposure to mycotoxins did not alter fiber type but had long-term effects on postnatal muscle hypertrophy and cross-sectional area. Additionally, developmental age influenced the miRNA transcriptome and mRNA expression of genes related to muscle growth.
Article
Food Science & Technology
Seung-Hoon Lee, Sangwook Kim, Jun-Mo Kim
Summary: Muscle fiber characteristics (MFCs) are important for lean meat production and meat quality. This study focused on the heritability and genetic correlation of MFCs and meat quality in biopsied and post-mortem meat samples of Jeju black pigs. The results showed high genetic correlation between biopsied and post-mortem samples, indicating that the MFCs of biopsied samples can predict the MFCs and quality of the meat after slaughter. The biopsy method can be useful for estimating MFCs and meat quality in live pigs.
Article
Agriculture, Multidisciplinary
Dingding Zhang, Jingli Tao, Xuan Zhang, Xiangfei Ma, Chengyu Li, Hongmin Li, Weijian Li, Jie Chen, Honglin Liu
Summary: This study reveals the role of neoruscogenin in muscle growth by inhibiting MSTN maturation and promoting protein synthesis metabolism. It also shows its potential in repairing muscle injuries. These findings have important implications for the treatment of muscle disorders and the livestock industry.
JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY
(2022)
Article
Genetics & Heredity
Sanbao Zhang, Qiongwen Zhang, Lili Yang, Xiaotong Gao, Ting Chen, Tianbao Li, Wenyue Sun, Yufan Liu, Zihua Zheng, Yan Pan, Yingming Wei, Yanna Huang, Mingsheng Jiang, Qinyang Jiang
Summary: MiRNAs play a role in skeletal muscle development in various species, but little is known about their involvement in goats. By sequencing RNAs and miRNAs, this study analyzed the longissimus dorsi muscle of one- and ten-month-old goats. The results revealed differentially expressed genes and miRNAs associated with muscle development, and identified specific miRNA-mRNA pairs involved in goat skeletal muscle development. This study provides new insights into the functional roles of miRNAs in goat muscle development, contributing to a deeper understanding of miRNA regulation during mammalian muscle development.
Review
Nutrition & Dietetics
Marco Sist, Lu Zou, Stuart D. R. Galloway, Nidia Rodriguez-Sanchez
Summary: This meta-analysis found no statistically significant effect of vitamin D supplementation on improving maximum strength and power in athletes, but suggests the need for further research addressing the limitations of previous studies.
FRONTIERS IN NUTRITION
(2023)
Article
Sport Sciences
Filip Kojic, Igor Ranisavljev, Dusan Cosic, Dejana Popovic, Stanimir Stojiljkovic, Vladimir Ilic
Summary: The study found that in untrained subjects, the duration of the eccentric phase has no effect on muscle hypertrophy, but slower eccentric movement significantly increases 1RM. Both experimental groups showed equal increases in muscle thickness, while a decrease in Dm was observed overall.
Article
Biochemistry & Molecular Biology
M. A. Greene, G. A. Worley, A. N. S. Udoka, R. R. Powell, T. Bruce, J. L. Klotz, W. C. Bridges Jr, S. K. Duckett
Summary: The study experimented with different methods to alter miRNA expression, promoting myoblast proliferation and altering muscle fiber hypertrophy. Both in vitro and in vivo experiments showed that certain miRNA treatments significantly affected myoblast proliferation and muscle fiber types.
FRONTIERS IN MOLECULAR BIOSCIENCES
(2023)
Article
Sport Sciences
Jamison R. Christian, Sydney E. Gothart, Harrison K. Graham, Katelyn D. Barganier, Paul N. Whitehead
Summary: The purpose of this study was to determine the level of muscle activation of the anterior deltoid (AD), medial deltoid (MD), and pectoralis major (PM) during various bench press scenarios. The results showed that the activation level of AD was significantly higher during incline bench press compared to other scenarios, while the activation level of MD was significantly lower. There were also differences in the activation level of PM between different scenarios. The higher amount of adipose tissue in female subjects may have caused irregularities in the PM data.
JOURNAL OF STRENGTH AND CONDITIONING RESEARCH
(2023)
Review
Hospitality, Leisure, Sport & Tourism
Jozo Grgic, Brad J. Schoenfeld, John Orazem, Filip Sabol
Summary: Training to muscle failure or non-failure does not have a significant impact on muscular strength and hypertrophy, except in studies where training volume is not equated between the groups, favoring non-failure training for strength gains. In resistance-trained individuals, training to failure has a significant effect on muscle hypertrophy.
JOURNAL OF SPORT AND HEALTH SCIENCE
(2022)
Article
Multidisciplinary Sciences
Sidhiprada Mohapatra, Aparajita Verma, N. Girish
Summary: Manual materials handling is a significant risk factor for musculoskeletal injuries in many workplaces. This study aimed to develop a lifting capacity prediction model for construction workers based on muscle strength and endurance. Through the assessment of 65 construction workers, the study found that age, BMI, grip strength, flexibility, prone plank, and trunk lateral flexor endurance tests significantly influenced lifting capacity. Therefore, a regression model was developed to aid in easy estimation of lifting capacity among construction workers, which could be administered by site supervisors or managers with minimal skills. This could help in decision-making during pre-placement or return to work evaluations, thereby reducing the incidence of low back disorders.
SCIENTIFIC REPORTS
(2022)
Article
Physiology
Mizuki Sudo, Yutaka Kano, Soichi Ando
Summary: This study investigated the effects of environmental enrichment on muscle adaptation in rats and found that environmental enrichment can induce hypertrophy of slow-twitch muscle fibers through increased daily voluntary physical activity.
FRONTIERS IN PHYSIOLOGY
(2023)
Article
Dermatology
A. L. Akabane, G. P. Snnith
Summary: This study aimed to characterize dermatologic manifestations in patients with SFN and found a wide range of clinical features that affect the skin, with characteristic findings affecting the extremities. Symptoms included pain, numbness, edema, skin color changes, hair loss, Raynaud's phenomenon, erythromelalgia, itch, and localized eczematous dermatitis.
JOURNAL OF THE EUROPEAN ACADEMY OF DERMATOLOGY AND VENEREOLOGY
(2022)
Article
Physiology
Hameed Al-Sarraf, Abdeslam Mouihate
Summary: Resistance exercise has been found to enhance muscle strength and hypertrophy, leading to health benefits. This study developed a simple experimental model to investigate the mechanisms underlying the beneficial effects of resistance exercise.
FRONTIERS IN PHYSIOLOGY
(2022)
Letter
Endocrinology & Metabolism
Scott J. Dankel, Takashi Abe, Robert W. Spitz, Ricardo Viana, Zachary W. Bell, Vickie Wong, Raksha N. Chatakondi, Jeremy P. Loenneke
JOURNAL OF CLINICAL DENSITOMETRY
(2020)
Review
Nursing
Takashi Abe, Ricardo B. Viana, Scott J. Dankel, Zachary W. Bell, Jeremy P. Loenneke
BARIATRIC SURGICAL PRACTICE AND PATIENT CARE
(2020)
Article
Physiology
Noam Yitzchaki, Wenyuan G. Zhu, Tayla E. Kuehne, Ecaterina Vasenina, Scott J. Dankel, Samuel L. Buckner
CLINICAL PHYSIOLOGY AND FUNCTIONAL IMAGING
(2020)
Review
Sport Sciences
Ricardo Borges Viana, Scott J. Dankel, Jeremy P. Loenneke, Paulo Gentil, Carlos Alexandre Vieira, Marilia dos Santos Andrade, Rodrigo Luiz Vancini, Claudio Andre Barbosa Lira
SCANDINAVIAN JOURNAL OF MEDICINE & SCIENCE IN SPORTS
(2020)
Article
Physiology
Ecaterina Vasenina, Ryo Kataoka, William B. Hammert, Adam H. Ibrahim, Scott J. Dankel, Samuel L. Buckner
Summary: The study aimed to compare changes in echo intensity (EI) of biceps muscle images using different regions of interest (ROI) immediately following exercise, as well as 24 and 48 hours post-exercise. The results showed that similar changes in EI were detected when using different commonly used ROI, but EI values appear to be lower when larger ROI are examined.
CLINICAL PHYSIOLOGY AND FUNCTIONAL IMAGING
(2022)
Article
Physiology
Nicole E. Fallon, Emely Urbina, Dominic Whitener, Mana H. Patel, Ryan J. Exner, Scott J. Dankel
Summary: The study found that using narrower restriction cuffs during blood flow restricted walking exercise appeared to reduce participant discomfort and was also preferred. Future research may need to explore the impact of different restrictive cuff widths on changes in gait patterns during blood flow restricted walking exercise.
CLINICAL PHYSIOLOGY AND FUNCTIONAL IMAGING
(2022)
Article
Physiology
Daphney M. Stanford, Matthew A. Chatlaong, William M. Miller, J. Grant Mouser, Scott J. Dankel, Matthew B. Jessee
Summary: This study aimed to compare the effects of relative pressures and absolute pressures on blood flow, shear rate, and discomfort. The results showed that applying relative pressures does not necessarily guarantee a similar stimulus, and higher pressures lead to more variable changes, even when the pressure is relative to each individual.
CLINICAL PHYSIOLOGY AND FUNCTIONAL IMAGING
(2022)
Article
Sport Sciences
Ryan J. Exner, Mana H. Patel, Dominic Whitener, Samuel L. Buckner, Matthew B. Jessee, Scott J. Dankel
Summary: The prescription of resistance exercise should take into consideration individual differences in local muscle endurance to ensure a similarly effective stimulus across individuals.
EUROPEAN JOURNAL OF SPORT SCIENCE
(2023)
Article
Physiology
Paul J. Sandbach, Marlon S. Carvajal, Mehmet Uygur, Scott J. Dankel
Summary: Blood flow restriction after exercise can activate muscle afferents, but does not alter local muscle endurance of the contralateral limb.
CLINICAL PHYSIOLOGY AND FUNCTIONAL IMAGING
(2022)
Article
Sport Sciences
Hannah E. Cintron, Jessica J. Heyburn, Robert L. Sterner, Scott J. Dankel
Summary: This study found that performing low frequency electrical stimulation (E-STIM) under blood flow restriction (BFR) did not enhance the effectiveness of preventing exercise-induced muscle damage.
RESEARCH IN SPORTS MEDICINE
(2022)
Article
Physiology
LaNiece J. Brown, Alexa N. Gasser, Robert L. Sterner, Scott J. Dankel
Summary: This study aimed to investigate the combined effects of electrical stimulation (E-STIM) and blood flow restriction (BFR) on the treatment of exercise-induced muscle damage. The results showed that the addition of BFR did not alter the effectiveness of E-STIM, but E-STIM had a certain effect on treating discomfort.
CLINICAL PHYSIOLOGY AND FUNCTIONAL IMAGING
(2023)
Article
Physiology
Robert W. Spitz, Scott J. Dankel, Matthew B. Jessee, Vickie Wong, Zachary W. Bell, Takashi Abe, Jeremy P. Loenneke
Summary: The purpose of this study was to determine if muscle growth mediates increases in nonspecific strength. Participants were randomized into control, 1RM-TRAIN, or TRAD-TRAIN groups and performed elbow flexion training. Muscle thickness and maximal isokinetic torque were assessed pre- and post-training. The study found no significant direct effects of training on nonspecific strength and suggests a need to reconsider the importance of muscle growth for nonspecific strength gains.
CLINICAL PHYSIOLOGY AND FUNCTIONAL IMAGING
(2023)
Article
Radiology, Nuclear Medicine & Medical Imaging
Tyler D. Baer, Kevin A. Rice, Emely Urbina, Dominic V. Whitener, Scott J. Dankel
Summary: This study aimed to investigate whether the reliability of muscle thickness measured via ultrasound can be improved by using the Compare Assistant tool and whether this depends on technician experience and the muscle being assessed. The results showed that using the Compare Assistant tool did not improve the reliability of the measurements, suggesting that the day-to-day reliability of muscle thickness measurement may be limited by random biological variability rather than technician error.
JOURNAL OF MEDICAL ULTRASONICS
(2023)
Review
Radiology, Nuclear Medicine & Medical Imaging
Scott Justin Dankel, Brenna M. Razzano
JOURNAL OF ULTRASOUND
(2020)
Article
Geriatrics & Gerontology
T. Abe, S. J. Dankel, Z. W. Bell, E. Fujita, Y. Yaginuma, T. Akamine, R. W. Spitz, V Wong, R. B. Viana, J. P. Loenneke
JOURNAL OF FRAILTY & AGING
(2020)