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https://www.readbyqxmd.com/read/28532279/the-effect-of-cold-ambient-temperatures-on-climbing-specific-finger-flexor-performance
#1
Kevin Phillips, Byungjoo Noh, Matthew Gage, Tejin Yoon
Different ambient temperatures are known to affect muscular performance based on the type of contraction. The effect of cold (10°C) and thermoneutral (TN) (24°C) ambient temperatures on finger flexor performance was examined in 12 rock climbers. After 30 min of seated rest in the designated temperature condition, participants completed maximal voluntary contractions (MVC) on a climbing-specific finger flexor assessment device equipped with a crimp grip hold. Participants then completed an intermittent fatiguing task until failure...
May 22, 2017: European Journal of Sport Science
https://www.readbyqxmd.com/read/28532248/effects-of-drop-sets-with-resistance-training-on-increases-in-muscle-csa-strength-and-endurance-a-pilot-study
#2
Hayao Ozaki, Atsushi Kubota, Toshiharu Natsume, Jeremy P Loenneke, Takashi Abe, Shuichi Machida, Hisashi Naito
To investigate the effects of a single high-load (80% of one repetition maximum [1RM]) set with additional drop sets descending to a low-load (30% 1RM) without recovery intervals on muscle strength, endurance, and size in untrained young men. Nine untrained young men performed dumbbell curls to concentric failure 2-3 days per week for 8 weeks. Each arm was randomly assigned to one of the following three conditions: 3 sets of high-load (HL, 80% 1RM) resistance exercise, 3 sets of low-load [LL, 30% 1RM] resistance exercise, and a single high-load (SDS) set with additional drop sets descending to a low-load...
May 22, 2017: Journal of Sports Sciences
https://www.readbyqxmd.com/read/28523992/nutrition-and-exercise-in-sarcopenia
#3
Stephen D Anton, Azumi Hida, Robert Mankowski, Andrew Layne, Lawrence Solberg, Arch G Mainous, Thomas W Buford
Sarcopenia is a debilitating condition that involves loss of muscle mass and function, which affects virtually everyone as they age, and can lead to frailty and ultimately disability. In growing recognition of the importance of both muscle strength and muscle mass relative to body size in contributing to functional decline, recent definitions have now incorporated grip strength and a correction for body mass as part of the key criteria that define sarcopenia. With this new definition, a much larger population of older adults are now at risk of sarcopenia...
December 27, 2016: Current Protein & Peptide Science
https://www.readbyqxmd.com/read/28515835/the-effect-of-acute-hyperglycemia-on-muscular-strength-power-and-endurance
#4
Franklin Lime-Ma, Joshua A Cotter, Evan E Schick
The purpose of this study was to elucidate the impact of acute hyperglycemia on skeletal muscle strength, power, and endurance. Ten male collegiate athletes (age 21.5 ± 1.5 years, height 186 ± 2.03 cm, body mass 108.8 ± 7.6 kg) participated in 2 testing sessions, separated by 7 days and randomized for either high glucose (HG) or control (C) treatment conditions. HG consumed a high glucose drink (2 g glucose/kg body weight) while controls consumed an isocaloric nutrition bar (40% protein, 30% fat, and 30% carbohydrate)...
2017: International Journal of Exercise Science
https://www.readbyqxmd.com/read/28515070/even-mealtime-distribution-of-protein-intake-is-associated-with-greater-muscle-strength-but-not-with-3-y-physical-function-decline-in-free-living-older-adults-the-quebec-longitudinal-study-on-nutrition-as-a-determinant-of-successful-aging-nuage-study
#5
Samaneh Farsijani, Hélène Payette, José A Morais, Bryna Shatenstein, Pierrette Gaudreau, Stéphanie Chevalier
Background: Functional status declines with aging, thus impeding autonomy. Recently, a more even mealtime distribution of dietary protein was positively associated with muscle mass, but the relation of this distribution to physical performance remains unknown.Objective: We examined the relation between mealtime protein-intake distribution and physical performance and its 3-y decline in community-dwelling older adults.Design: Three-year follow-up data from 827 men and 914 women (67-84 y) in the longitudinal study on nutrition and aging [Quebec longitudinal study on Nutrition as a Determinant of Successful Aging (NuAge study); Quebec, Canada] were analyzed...
May 17, 2017: American Journal of Clinical Nutrition
https://www.readbyqxmd.com/read/28500415/mind-muscle-connection-training-principle-influence-of-muscle-strength-and-training-experience-during-a-pushing-movement
#6
Joaquin Calatayud, Jonas Vinstrup, Markus D Jakobsen, Emil Sundstrup, Juan Carlos Colado, Lars L Andersen
PURPOSE: To investigate the effect of different attentional focus conditions on muscle activity during the push-up exercise and to assess the possible influence of muscle strength and training experience. METHODS: Eighteen resistance-trained men performed 1RM bench press testing and were familiarized with the procedure during the first session. In the second session, three different conditions were randomly performed: regular push-up and push-up focusing on using the pectoralis major and triceps brachii muscles, respectively...
May 12, 2017: European Journal of Applied Physiology
https://www.readbyqxmd.com/read/28499810/prevalence-of-late-onset-pompe-disease-in-portuguese-patients-with-diaphragmatic-paralysis-dipper-study
#7
M J Guimarães, J C Winck, B Conde, A Mineiro, M Raposo, J Moita, A Marinho, J M Silva, N Pires, S André, C Loureiro
Pompe disease is a rare autosomal recessive neuromuscular disorder caused by acid α-glucosidase enzyme (GAA) deficiency and divided into two distinct variants, infantile- and late-onset. The late-onset variant is characterized by a spectrum of phenotypic variation that may range from asymptomatic, to reduced muscle strength and/or diaphragmatic paralysis. Since muscle strength loss is characteristic of several different conditions, which may also cause diaphragmatic paralysis, a protocol was created to search for the diagnosis of Pompe disease and exclude other possible causes...
May 9, 2017: Revista Portuguesa de Pneumologia
https://www.readbyqxmd.com/read/28497900/utility-and-reliability-of-non-invasive-muscle-function-tests-in-high-fat-fed-mice
#8
Sergio F Martinez-Huenchullan, Susan V McLennan, Linda A Ban, Marco Morsch, Stephen M Twigg, Charmaine S Tam
Non-invasive tests are commonly used for assessing muscle function in animal models. The value of these tests in obesity, a condition where muscle strength is reduced, is unclear. We investigated the utility of three non-invasive muscle function tests, namely grip strength (GS), hang wire (HW), and four-limb hanging (FLH) in C57BL/6 mice fed chow (n = 48) or high-fat diet (HFD, n = 48) for 20 weeks. Muscle function tests were performed at 5, 10, and 20 weeks. After 10 and 20 weeks, HFD mice had significantly reduced GS (10 weeks chow:1...
May 12, 2017: Experimental Physiology
https://www.readbyqxmd.com/read/28493406/beta-hydroxy-beta-methylbutyrate-supplementation-and-skeletal-muscle-in-healthy-and-muscle-wasting-conditions
#9
REVIEW
Milan Holeček
Beta-hydroxy-beta-methylbutyrate (HMB) is a metabolite of the essential amino acid leucine that has been reported to have anabolic effects on protein metabolism. The aims of this article were to summarize the results of studies of the effects of HMB on skeletal muscle and to examine the evidence for the rationale to use HMB as a nutritional supplement to exert beneficial effects on muscle mass and function in various conditions of health and disease. The data presented here indicate that the beneficial effects of HMB have been well characterized in strength-power and endurance exercise...
May 10, 2017: Journal of Cachexia, Sarcopenia and Muscle
https://www.readbyqxmd.com/read/28489183/frequency-and-factors-associated-with-falls-in-adults-aged-55-years-or-more
#10
Sabrina Canhada Ferrari Prato, Selma Maffei de Andrade, Marcos Aparecido Sarria Cabrera, Renata Maciulis Dip, Hellen Geremias Dos Santos, Mara Solange Gomes Dellaroza, Arthur Eumann Mesas
OBJECTIVE: The objective of this study is to analyze the frequency and factors associated with falls in adults aged 55 years or more. METHODS: This is a study inserted into another population-based study with representative sample of persons aged 40 years or more of the urban area in a medium-sized municipality of the State of Paraná, Brazil, in 2011. That study obtained demographic and socioeconomic data and characteristics related to life habits, health conditions, and functional capacity (n = 1,180)...
April 27, 2017: Revista de Saúde Pública
https://www.readbyqxmd.com/read/28488836/effects-of-low-load-resistance-exercise-with-blood-flow-restriction-on-intramuscular-hemodynamics-oxygenation-level-and-water-content
#11
Osamu Yanagisawa, Atsuki Fukutani
BACKGROUND: Muscle metabolism during and after low-load blood flow restriction (BFR) exercise should be further investigated to clarify the mechanism by which the exercise leads to muscle hypertrophy, and increases strength and endurance. We aimed to investigate the effects of low-load resistance exercise with BFR on intramuscular hemodynamics, oxygenation level, and water content. METHODS: Seven men performed ankle plantar flexion exercise (120 repetitions, 30% one repetition maximum) using a custom-made device with and without BFR inside a magnetic resonance scanner...
May 9, 2017: Journal of Sports Medicine and Physical Fitness
https://www.readbyqxmd.com/read/28488124/hypomyopathic-dermatomyositis-associated-with-interstitial-lung-disease-and-good-response-to-mycophenolate-mofetil-case-based-review
#12
REVIEW
Roberta Vilela Lopes Koyama, Tiago Kiyoshi Kitabayashi Braga, George Alberto da Silva Dias, Satomi Fujihara, Hellen Thais Fuzii, Gilberto Toshimitsu Yoshikawa
Hypomyopathic dermatomyositis (HDM) is a rare form of dermatomyositis (DM). Interstitial lung disease (ILD) associated with clinically amyopathic DM (CADM-ILD) or hypomyopathic DM (HDM-ILD) is a rare condition with a more unfavorable prognosis than ILD associated with classic DM (CDM-ILD). There is no effective treatment for HDM-ILD. A 62-year-old woman with a 6-month history of chronic polyarthritis and myalgia presented skin lesions characteristic of DM (erythematous lesion on extensor surface of elbows, Gottron's papules, V-neck sign) with no clinical muscle impairment (global muscle strength: grade 5)...
May 9, 2017: Clinical Rheumatology
https://www.readbyqxmd.com/read/28477106/sarcopenia-in-gastric-cancer-when-the-loss-costs-too-much
#13
REVIEW
Elena Ongaro, Vanessa Buoro, Marika Cinausero, Riccardo Caccialanza, Annalisa Turri, Valentina Fanotto, Debora Basile, Maria Grazia Vitale, Paola Ermacora, Giovanni Gerardo Cardellino, Laura Nicoletti, Lorenzo Fornaro, Andrea Casadei-Gardini, Giuseppe Aprile
Sarcopenia is a complex syndrome characterized by progressive and generalized loss of skeletal muscle mass and strength. Malignancy is a major determinant of sarcopenia, and gastric cancer (GC) is among the most common causes of this phenomenon. As sarcopenia is a well-recognized poor prognostic feature in GC and has been associated with worse tolerance of surgical and medical treatments, members of the multidisciplinary team should be aware of the clinical relevance, pathogenic mechanisms, and potential treatments for this syndrome...
May 5, 2017: Gastric Cancer
https://www.readbyqxmd.com/read/28476110/restriction-in-lateral-bending-range-of-motion-lumbar-lordosis-and-hamstring-flexibility-predicts-the-development-of-low-back-pain-a-systematic-review-of-prospective-cohort-studies
#14
Sean G Sadler, Martin J Spink, Alan Ho, Xanne Janse De Jonge, Vivienne H Chuter
BACKGROUND: Low back pain (LBP) is an increasingly common condition worldwide with significant costs associated with its management. Identification of musculoskeletal risk factors that can be treated clinically before the development of LBP could reduce costs and improve the quality of life of individuals. Therefore the aim was to systematically review prospective cohort studies investigating lower back and / or lower limb musculoskeletal risk factors in the development of LBP. METHODS: MEDLINE, EMBASE, AMED, CINAHL, SPORTDiscus, and the Cochrane Library were searched from inception to February 2016...
May 5, 2017: BMC Musculoskeletal Disorders
https://www.readbyqxmd.com/read/28475846/resistance-exercise-attenuates-skeletal-muscle-oxidative-stress-systemic-pro-inflammatory-state-and-cachexia-in-walker-256-tumor-bearing-rats
#15
Camila Souza Padilha, Fernando H Borges, Lilian Eslaine Costa Mendes da Silva, Fernando Tadeu Trevisan Frajacomo, Alceu Afonso Jordao, José Alberto Duarte, Rubens Cecchini, Flávia Alessandra Guarnier, Rafael Deminice
The aim of this study was to investigate the effects of resistance exercise training (RET) on oxidative stress, systemic inflammatory markers and muscle wasting in Walker-256 tumor-bearing rats. Male (Wistar) rats were divided into 4 groups: sedentary controls (n=9); tumor-bearing (n=9); exercised (n=9); and tumor-bearing exercised (n=10). Exercised and tumor-bearing exercised rats were exposed to resistance exercise of climbing a ladder apparatus with weights tied to their tails during 6-wks. The physical activity of control and tumor-bearing rats was confined to the space of the cage...
May 5, 2017: Applied Physiology, Nutrition, and Metabolism, Physiologie Appliquée, Nutrition et Métabolisme
https://www.readbyqxmd.com/read/28469267/epidemiology-of-sarcopenia-and-insight-into-possible-therapeutic-targets
#16
REVIEW
Elaine M Dennison, Avan A Sayer, Cyrus Cooper
Musculoskeletal ageing is a major public health concern owing to demographic shifts in the population. Sarcopenia, generally defined as the age-related loss of muscle mass and function, is associated with considerable risk of falls, loss of independence in older adults and hospitalization with poorer health outcomes. This condition is therefore associated with increased morbidity and health care costs. As with bone mass, muscle mass and strength increase during late adolescence and early adulthood, but begin to decline substantially from ∼50 years of age...
June 2017: Nature Reviews. Rheumatology
https://www.readbyqxmd.com/read/28466181/-low-level-laser-therapy-a-narrative-literature-review-on-the-efficacy-in-the-treatment-of-rheumatic-orthopaedic-conditions
#17
REVIEW
A W A Baltzer, D Stosch, F Seidel, M S Ostapczuk
BACKGROUND: In low level laser therapy (LLLT) low wattage lasers are used to irradiate the affected skin areas, joints, nerves, muscles and tendons without any sensation or thermal damage. Although the exact mechanism of its effect is still unknown, it seems beyond dispute that LLLT induces a variety of stimulating processes at the cellular level affecting cell repair mechanisms, the vascular system and lymphatic system. LLLT has been popular among orthopaedic practitioners for many years, whereas university medicine has remained rather sceptical about it...
May 2, 2017: Zeitschrift Für Rheumatologie
https://www.readbyqxmd.com/read/28465116/models-of-sarcopenia-short-review
#18
REVIEW
S Palus, J I Springer, W Doehner, S von Haehling, M Anker, S D Anker, J Springer
Approximately 40-50% of the population over 80years of age suffers from sarcopenia making this condition a major geriatric clinical disorder and a key challenge to healthy aging. The hallmark symptom of sarcopenia is the loss of muscle mass and strength without the loss of overall body weight. Sarcopenic patients are likely to have worse clinical outcomes and higher mortality compared to healthy individuals. This review will focus on animal models designed to study sarcopenia including hind-limb unloading, de-nervation, and immobilization by using casts or wire strategies, as well as using aged rodents...
April 2, 2017: International Journal of Cardiology
https://www.readbyqxmd.com/read/28462115/therapeutic-potential-of-eccentric-exercises-for-age-related-muscle-atrophy
#19
REVIEW
Jae-Young Lim
Recent studies have focused on evidence-based interventions to prevent mobility decline and enhance physical performance in older adults. Several modalities, in addition to traditional strengthening programs, have been designed to manage age-related functional decline more effectively. In this study, we reviewed the current relevant literatures to assess the therapeutic potential of eccentric exercises for age-related muscle atrophy (sarcopenia). Age-related changes in human skeletal muscle, and their relationship with physical performance, are discussed with reference to in vitro physiologic and human biomechanics studies...
September 2016: Integr Med Res
https://www.readbyqxmd.com/read/28461226/clinical-and-functional-characteristics-of-people-with-chronic-and-recent-onset-plantar-heel-pain
#20
Allegra Barnes, Justin Sullivan, Evangelos Pappas, Roger Adams, Joshua Burns
BACKGROUND: Plantar heel pain is a common condition that reduces health-related quality of life. Recovery usually occurs within 12 months; however, up to 20 percent of people remain symptomatic beyond this time-frame. The level of pain and function in this chronic heel pain group is not well described. OBJECTIVE: To identify clinical and functional characteristics associated with chronic plantar heel pain compared with heel pain of recent onset. DESIGN: Cross-sectional study SETTING: University research laboratory and private physiotherapy clinic PARTICIPANTS: A total of 71 people with plantar heel pain for longer than 12 months and 64 people with plantar heel pain for less than 6 months were recruited from the general public...
April 28, 2017: PM & R: the Journal of Injury, Function, and Rehabilitation
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