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https://www.readbyqxmd.com/read/29790430/improvement-of-cellular-health-indicators-and-muscle-quality-in-older-women-with-different-resistance-training-volumes
#1
Paolo M Cunha, Crisieli M Tomeleri, Matheus A do Nascimento, João Pedro Nunes, Melissa Antunes, Hellen C G Nabuco, Ygor Quadros, Edilaine F Cavalcante, Jerry L Mayhew, Luís B Sardinha, Edilson S Cyrino
The main purpose of this study was to compare the effects of resistance training (RT) performed with different training volumes on phase angle (PhA), body water components, and muscle quality (MQ) in untrained older adult women. A second purpose was to assess the relationship between PhA and MQ. Sixty-two older adult women (68.6 ± 5.0 years, 65.2 ± 13.3 kg, 156.1 ± 6.2 cm) were randomly assigned into one of the three groups: two training groups performed either 1 set (G1S) or 3 sets (G3S), or a control group (CG)...
May 23, 2018: Journal of Sports Sciences
https://www.readbyqxmd.com/read/29789801/exercise-prevents-diaphragm-wasting-induced-by-cigarette-smoke-through-modulation-of-antioxidant-genes-and-metalloproteinases
#2
Gracielle Vieira Ramos, Alessandra Choqueta de Toledo-Arruda, Clara Maria Pinheiro-Dardis, Camila Liyoko Suehiro, Thiago Luiz de Russo, Rodolfo Paula Vieira, Milton Arruda Martins, Tania Fátima Salvini, João Luiz Quagliotti Durigan
Background: The present study aimed to analyze the effects of physical training on an antioxidant canonical pathway and metalloproteinases activity in diaphragm muscle in a model of cigarette smoke-induced chronic obstructive pulmonary disease (COPD). Methods: Male mice were randomized into control, smoke, exercise, and exercise + smoke groups, which were maintained in trial period of 24 weeks. Gene expression of kelch-like ECH-associated protein 1; nuclear factor erythroid-2 like 2; and heme-oxygenase1 by polymerase chain reaction was performed...
2018: BioMed Research International
https://www.readbyqxmd.com/read/29789599/exercise-activates-the-pi3k-akt-signal-pathway-by-decreasing-the-expression-of-5%C3%AE-reductase-type-1-in-pcos-rats
#3
Chuyan Wu, Feng Jiang, Ke Wei, Zhongli Jiang
Hyperandrogenism and hyperinsulinemia are main clinical endocrine features of PCOS. Exercise can adjust the androgen level, as well as increase the sensitivity of insulin by activating PI3K-Akt insulin signaling pathways. 5αR1 has certain effects on insulin resistance and can synthesize dihydrotestosterone by metabolizing testosterone. So 5αR1 may be the target of androgen and insulin for exercise-induced regulation. To investigate the role of 5αR1 in the PI3K-Akt signaling pathway in skeletal muscle of PCOS rats activated by exercise, fifty-four female rats were randomly divided into the PCOS group (n = 42) and the control group(n = 12)...
May 22, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29789262/eccentric-cycling-emphasising-a-low-cardiopulmonary-demand-increases-leg-strength-equivalent-to-workload-matched-concentric-cycling-in-middle-age-sedentary-males
#4
Michael C Lewis, Gregory E Peoples, Herbert Groeller, Marc A Brown
OBJECTIVES: This study determined if eccentric endurance cycling, eliciting a low cardiovascular demand, could stimulate muscle strength adaptations in sedentary middle-aged males. DESIGN: Twenty-four middle-aged sedentary males were allocated to concentric (CON) or matched workload eccentric (ECC) cycling (60% peak concentric workload) according to their maximal voluntary isometric quadriceps strength. METHODS: Seventeen participants [42...
May 15, 2018: Journal of Science and Medicine in Sport
https://www.readbyqxmd.com/read/29788511/training-effects-of-alternated-and-pulsed-currents-on-the-quadriceps-muscles-of-athletes
#5
Pedro Oliveira, Karenina Arrais Guida Modesto, Martim Bottaro, Nicolas Babault, João Luiz Quagliotti Durigan
The aim of the study was to evaluate the effects of 6 weeks training with different neuromuscular electrical stimulation (NMES) currents (medium alternated and low-frequency pulsed current) on muscle architecture and neuromuscular performance of competitive athletes. A double-blind controlled and randomized experimental study was carried out with 33 athletes (22.2±2.6 yrs, 74.7±9.8 kg, 176.8±6.0 cm), divided into 3 groups: mid-frequency current (MF, n=12), pulsed current (PC, n=11) and the control group (CG, n=10)...
May 22, 2018: International Journal of Sports Medicine
https://www.readbyqxmd.com/read/29787583/gender-associated-muscle-tendon-adaptations-to-resistance-training
#6
Gerard McMahon, Christopher I Morse, Keith Winwood, Adrian Burden, Gladys L Onambélé
PURPOSE: To compare the relative changes in muscle-tendon complex (MTC) properties following high load resistance training (RT) in young males and females, and determine any link with circulating TGFβ-1 and IGF-I levels. METHODS: Twenty-eight participants were assigned to a training group and subdivided by sex (T males [TM] aged 20±1 year, n = 8, T females [TF] aged 19±3 year, n = 8), whilst age-matched 6 males and 6 females were assigned to control groups (ConM/F)...
2018: PloS One
https://www.readbyqxmd.com/read/29786877/morphomic-malnutrition-score-a-standardized-screening-tool-for-severe-malnutrition-in-adults
#7
Christopher Lee, Erica Raymond, Brian A Derstine, Joshua M Glazer, Rebecca Goulson, Avinash Rajasekaran, Jill Cherry-Bukowiec, Grace L Su, Stewart C Wang
BACKGROUND: Granular diagnostic criteria for adult malnutrition are lacking. OBJECTIVE: This study uses analytic morphomics to define the Morphomic Malnutrition Score (MMS), a robust screening tool for severe malnutrition. METHODS: The study population (n = 643) consisted of 2 cohorts: 1) 124 emergency department patients diagnosed with severe malnutrition by a registered dietitian (RD) and an available computed tomography (CT) scan within 2 days of RD evaluation, and 2) 519 adult kidney donor candidates to represent a healthy cohort...
May 22, 2018: JPEN. Journal of Parenteral and Enteral Nutrition
https://www.readbyqxmd.com/read/29786625/differences-in-glenohumeral-joint-rotation-and-peak-power-output-between-super-league-and-championship-rugby-league-players
#8
Matthew R Haines
Haines, MR. Differences in glenohumeral joint rotation and peak power output between Super League and Championship Rugby League players. J Strength Cond Res 32(6): 1685-1691, 2018-Rugby league is a high-intensity sport with large impact forces sustained during play, resulting in high prevalence of shoulder injury. Consequently, shoulder strength and player power are important considerations for injury prevention and performance. Additionally, professional teams regularly compete against semiprofessional teams, where differences in physical conditioning could be marked...
June 2018: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/29786115/effects-of-cardiac-output-on-the-onset-of-rocuronium-induced-neuromuscular-block-in-elderly-patients
#9
Naoki Shiraishi, Mayu Aono, Yasuhito Kameyama, Mai Yamamoto, Osamu Kitajima, Takahiro Suzuki
PURPOSE: The aim of this study was to elucidate the relationship between the onset of rocuronium-induced neuromuscular block and arterial pressure-based cardiac output (CO) in elderly patients. METHODS: Forty elderly patients aged 65-83 years were enrolled in this study. After induction of anesthesia, contractions of the adductor pollicis muscle to ulnar nerve train-of-four stimulation were acceleromyographically evaluated and 1 mg/kg rocuronium was administered following CO measurement...
May 21, 2018: Journal of Anesthesia
https://www.readbyqxmd.com/read/29785098/sarcopenia-assessment-of-disease-burden-and-strategies-to-improve-outcomes
#10
REVIEW
Ilaria Liguori, Gennaro Russo, Luisa Aran, Giulia Bulli, Francesco Curcio, David Della-Morte, Gaetano Gargiulo, Gianluca Testa, Francesco Cacciatore, Domenico Bonaduce, Pasquale Abete
Life expectancy is increasing worldwide, with a resultant increase in the elderly population. Aging is characterized by the progressive loss of skeletal muscle mass and strength - a phenomenon called sarcopenia. Sarcopenia has a complex multifactorial pathogenesis, which involves not only age-related changes in neuromuscular function, muscle protein turnover, and hormone levels and sensitivity, but also a chronic pro-inflammatory state, oxidative stress, and behavioral factors - in particular, nutritional status and degree of physical activity...
2018: Clinical Interventions in Aging
https://www.readbyqxmd.com/read/29782463/gut-microbiota-probiotics-and-sport-from-clinical-evidence-to-agonistic-performance
#11
Marco Pane, Angela Amoruso, Francesca Deidda, Teresa Graziano, Serena Allesina, Luca Mogna
Human beings harbor clusters of bacteria in different parts of the body, such as the surface or the deep layers of the skin, the mouth, the lungs, the intestine, the vagina, and all the surfaces exposed to the outer world. The majority of microbes resides in the gut, have a weighty influence on human physiology and nutrition and are vital for human life. There is growing evidence showing that the gut microbiota plays important roles in the maturation of the immune system and the protection against some infectious agents...
May 18, 2018: Journal of Clinical Gastroenterology
https://www.readbyqxmd.com/read/29782040/two-repetitive-bouts-of-intense-eccentric-concentric-jaw-exercises-reduce-experimental-muscle-pain-in-healthy-subjects
#12
Rosaria Bucci, Frank Lobbezoo, Ambrosina Michelotti, Michail Koutris
BACKGROUND: High-intensity eccentric-concentric contractions of the jaw-closing muscles induce muscle soreness, fatigue, and functional impairment of the jaw, resembling the symptoms of myalgia, according to the Diagnostic Criteria for Temporomandibular Disorders (DC/TMD). However, it is claimed that repetition of similar exercises can minimize these detrimental effects. OBJECTIVE: This study aimed to evaluate the response of jaw closing muscles following two series of intense eccentric-concentric exercises of the masticatory muscles in healthy subjects...
May 21, 2018: Journal of Oral Rehabilitation
https://www.readbyqxmd.com/read/29781992/muscle-imbalances-testing-and-training-functional-eccentric-hamstring-strength-in-athletic-populations
#13
Petr Stastny, Michal Lehnert, James J Tufano
Many hamstring injuries that occur during physical activity occur while the muscles are lengthening, during eccentric hamstring muscle actions. Opposite of these eccentric hamstring actions are concentric quadriceps actions, where the larger and likely stronger quadriceps straighten the knee. Therefore, to stabilize the lower limbs during movement, the hamstrings must eccentrically combat against the strong knee-straightening torque of the quadriceps. As such, eccentric hamstring strength expressed relative to concentric quadricep strength is commonly referred to as the "functional ratio" as most movements in sports require simultaneous concentric knee extension and eccentric knee flexion...
May 1, 2018: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/29781940/alpha-actinin-3-r577x-polymorphism-influences-muscle-damage-and-hormonal-responses-after-a-soccer-game
#14
Daniel B Coelho, Eduardo M Pimenta, Izinara C Rosse, Christiano Veneroso, Guilherme De Azambuja Pussieldi, Lenice K Becker, Emerson C Oliveira, Maria R S Carvalho, Emerson Silami-Garcia
Coelho, DB, Pimenta, EM, Rosse, IC, Veneroso, C, Pussieldi, GDA, Becker, LK, De Oliveira, EC, Carvalho, MRS, and Silami-Garcia, E. Alpha-actinin-3 R577X polymorphism influences muscle damage and hormonal responses after a soccer game. J Strength Cond Res XX(X): 000-000, 2018-The purpose of this study was to evaluate indicators of muscle damage and hormonal responses after soccer matches and its relation to alpha-actinin-3 (ACTN3) gene expression (XX vs. RR/RX), considering that the R allele produces alpha-actinin-3 and provides greater muscle strength and power...
May 17, 2018: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/29781936/influence-of-adding-single-joint-exercise-to-a-multijoint-resistance-training-program-in-untrained-young-women
#15
Matheus Barbalho, Paulo Gentil, Rodolfo Raiol, James Fisher, James Steele, Victor Coswig
Barbalho, M, Gentil, P, Raiol, R, Fisher, J, Steele, J, and Coswig, V. Influence of adding single-joint exercise to a multijoint resistance training program in untrained young women. J Strength Cond Res XX(X): 000-000, 2018-The aim of the present study was to investigate the effects of adding single-joint (SJ) exercises to a multijoint (MJ) resistance training (RT) program on muscle strength and anthropometric measures of young women. Twenty untrained women were divided into a group that performed only MJ exercises or a group that performed both SJ and MJ exercises (MJ + SJ)...
May 15, 2018: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/29781788/a-review-of-the-reliability-of-biomechanical-variables-produced-during-the-isometric-mid-thigh-pull-and-isometric-squat-and-the-reporting-of-normative-data
#16
Claire J Brady, Andrew J Harrison, Thomas M Comyns
The use of isometric strength testing, particularly the isometric mid-thigh pull (IMTP) has increased dramatically over the last decade. The IMTP and isometric squat (ISqT) provide one aspect of performance monitoring with variables such as peak force and rate of force development being derived from the force-time curve. The reliability of some of these variables is conflicting in the literature, and the reporting of the reliability is not standardised across the research. The majority of research only reports intraclass correlation coefficients with very few studies reporting coefficient of variation and 90% confidence intervals...
May 21, 2018: Sports Biomechanics
https://www.readbyqxmd.com/read/29781744/endurance-training-alters-ykl40-perm1-and-hsp70-skeletal-muscle-protein-contents-in-men-with-type-2-diabetes-mellitus
#17
Christian Brinkmann, Anika Kuckertz, Thorsten Schiffer, Wilhelm Bloch, Hans-Georg Predel, Klara Brixius
BACKGROUND: The fight against type 2 diabetes mellitus (T2DM) is tremendously challenging. This pilot study investigates whether endurance training (3 times per week for 3 months, moderate intensity) can change the skeletal muscle protein contents of chitinase-3-like protein-1 (YKL40), peroxisome proliferator-activated receptor y coactivator-1 and estrogen-related receptor-induced regulator in muscle-1 (PERM1) and heat-shock protein-70 (HSP70), which have been discussed as novel therapeutically relevant targets...
May 21, 2018: Endocrine Research
https://www.readbyqxmd.com/read/29781580/neuromuscular-electrical-stimulation-compared-to-volitional-exercise-in-improving-muscle-function-in-rheumatoid-arthritis-a-randomized-pilot-study
#18
Sara R Piva, Samannaaz S Khoja, Frederico G S Toledo, Mary Chester Wasko, G Kelley Fitzgerald, Bret H Goodpaster, Clair N Smith, Anthony Delitto
OBJECTIVES: To compare the feasibility and effectiveness of Neuromuscular Electrical Stimulation (NMES) with high-intensity volitional resistance training in improving muscle structure and function, and physical function in patients with rheumatoid arthritis (RA). We also described pre- and post-intervention values of myocyte characteristics. METHODS: Two-group single-blinded pilot randomized study in adults with RA. Participants were assigned to 36 sessions over 16 weeks of NMES (n=31) or volitional training (n=28)...
May 21, 2018: Arthritis Care & Research
https://www.readbyqxmd.com/read/29781068/pelvic-floor-muscle-training-with-or-without-tibial-nerve-stimulation-and-lifestyle-changes-have-comparable-effects-on-the-overactive-bladder-a-randomized-clinical-trial
#19
Lina Bykoviene, Raimondas Kubilius, Rosita Aniuliene, Egle Bartuseviciene, Arnoldas Bartusevicius
PURPOSE: To compare effects of transcutaneous posterior tibial nerve stimulation (TPTNS) and pelvic floor muscle training (PFMT) in women with overactive bladder syndrome (OAB). MATERIAL AND METHODS: We randomized 67 women ? 18 years with OAB to three parallel groups: group I (n = 22) received life-style recommendations (LSR) only; group II (n = 24) had LSR + PFMT and group III (n = 21) had LSR + PFMT + TPTNS. Urgency, evaluated by a 3-day voiding diary before treatment and six weeks later, was the main outcome measure...
May 21, 2018: Urology Journal
https://www.readbyqxmd.com/read/29780328/contractile-activity-is-necessary-to-trigger-intermittent-hypobaric-hypoxia-induced-fiber-size-and-vascular-adaptations-in-skeletal-muscle
#20
David Rizo-Roca, Jèssica B Bonet, Büsra Ínal, Juan Gabriel Ríos-Kristjánsson, Teresa Pagès, Ginés Viscor, Joan R Torrella
Altitude training has become increasingly popular in recent decades. Its central and peripheral effects are well-described; however, few studies have analyzed the effects of intermittent hypobaric hypoxia (IHH) alone on skeletal muscle morphofunctionality. Here, we studied the effects of IHH on different myofiber morphofunctional parameters, investigating whether contractile activity is required to elicit hypoxia-induced adaptations in trained rats. Eighteen male Sprague-Dawley rats were trained 1 month and then divided into three groups: (1) rats in normobaria (trained normobaric inactive, TNI); (2) rats subjected daily to a 4-h exposure to hypobaric hypoxia equivalent to 4,000 m (trained hypobaric inactive, THI); and (3) rats subjected daily to a 4-h exposure to hypobaric hypoxia just before performing light exercise (trained hypobaric active, THA)...
2018: Frontiers in Physiology
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