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https://www.readbyqxmd.com/read/29345167/dietary-supplements-for-health-adaptation-and-recovery-in-athletes
#1
Eric S Rawson, Mary P Miles, D Enette Larson-Meyer
Some dietary supplements are recommended to athletes based on data that supports improved exercise performance. Other dietary supplements are not ergogenic per se, but may improve health, adaptation to exercise, or recovery from injury, and so could help athletes to train and/or compete more effectively. In this review, we describe several dietary supplements that may improve health, exercise adaptation, or recovery. Creatine monohydrate may improve: recovery from and adaptation to intense training, recovery from periods of injury with extreme inactivity, cognitive processing, and reduce severity of or enhance recovery from mild traumatic brain injury (mTBI)...
January 18, 2018: International Journal of Sport Nutrition and Exercise Metabolism
https://www.readbyqxmd.com/read/29321341/exercise-tolerance-and-balance-of-inspiratory-to-expiratory-muscle-strength-in-relation-to-breathing-timing-in-patients-with-chronic-obstructive-pulmonary-disease
#2
Keisuke Miki, Kazuyuki Tsujino, Tatsuya Edahiro, Seigo Kitada, Mari Miki, Kenji Yoshimura, Hiroyuki Kagawa, Yohei Oshitani, Yuko Ohara, Yuki Hosono, Hiroyuki Kurebe, Ryoji Maekura
Little is known about the applicability of respiratory muscle training based on exertional pathophysiological conditions in patients with chronic obstructive pulmonary disease (COPD). The aim of this study was to investigate the relationship between breathing timing and exertional responses, as well as whether exertional changes in the inspiratory duty cycle (inspiratory time [Ti]/total time [Ttot]) affect pathophysiological conditions, including respiratory muscles. Methods: Forty-five stable COPD patients (mean age: 71...
January 11, 2018: Journal of Breath Research
https://www.readbyqxmd.com/read/29315165/exercise-thresholds-on-trial-are-they-really-equivalent
#3
Kevin Caen, Kobe Vermeire, Jan G Bourgois, Jan Boone
PURPOSE: The interchangeable use of whole-body exercise thresholds and breakpoints (BPs) in the local oxygenation response, as measured via near-infrared spectroscopy (NIRS), has recently been questioned in scientific literature. Therefore, the present study aimed to longitudinally investigate the interrelationship of four commonly used exercise thresholds: critical power (CP), the respiratory compensation point (RCP) and BPs in muscle (m[HHb]BP) and brain (c[O2Hb]BP) oxygenation. METHODS: Nine male participants (21...
January 8, 2018: Medicine and Science in Sports and Exercise
https://www.readbyqxmd.com/read/29282152/safety-and-efficacy-of-inspiratory-muscle-training-for-preventing-adverse-outcomes-in-patients-at-risk-of-prolonged-hospitalisation
#4
Balbino Rivail Ventura Nepomuceno, Mayana de Sá Barreto, Naniane Cidreira Almeida, Caroline Ferreira Guerreiro, Eveline Xavier-Souza, Mansueto Gomes Neto
BACKGROUND: The early institution of inspiratory muscle training on hospitalised patients with no established respiratory deficits could prevent in-hospital adverse outcomes that are directly or indirectly associated to the loss of respiratory muscle mass inherent to a prolonged hospital stay. The objective of the clinical trial is to assess the impact of inspiratory muscle training on hospital inpatient complications. METHODS: This is a double-blind randomised controlled trial...
December 28, 2017: Trials
https://www.readbyqxmd.com/read/29258585/effects-of-endurance-training-on-skeletal-muscle-mitochondrial-function-in-huntington-disease-patients
#5
Sandro Manuel Mueller, Saskia Maria Gehrig, Jens A Petersen, Sebastian Frese, Violeta Mihaylova, Maria Ligon-Auer, Natalia Khmara, Jean-Marc Nuoffer, André Schaller, Carsten Lundby, Marco Toigo, Hans H Jung
BACKGROUND: Mitochondrial dysfunction may represent a pathogenic factor in Huntington disease (HD). Physical exercise leads to enhanced mitochondrial function in healthy participants. However, data on effects of physical exercise on HD skeletal muscle remains scarce. We aimed at investigating adaptations of the skeletal muscle mitochondria to endurance training in HD patients. METHODS: Thirteen HD patients and 11 healthy controls completed 26 weeks of endurance training...
December 19, 2017: Orphanet Journal of Rare Diseases
https://www.readbyqxmd.com/read/29238252/the-effect-of-respiratory-muscle-training-on-fin-swimmers-performance
#6
Jana Vašíčková, Kateřina Neumannová, Zbyněk Svozil
Although respiratory muscle functions can influence swimming performance, respiratory muscle training (RMT) is not routinely used for improving fin-swimmers´ performance. The aim of our study was to verify the benefit of a one month of RMT in young fin-swimmers. We assessed the effect of this training on respiratory muscles and on maximal underwater swimming distance. 28 fin-swimmers were randomly divided into an experimental group (EG) and a control group (CG). The study finished with 20 fin-swimmers (EG: n = 12; average age 12...
December 2017: Journal of Sports Science & Medicine
https://www.readbyqxmd.com/read/29229110/effects-of-two-types-of-equal-intensity-inspiratory-muscle-training-in-stable-patients-with-chronic-obstructive-pulmonary-disease-a-randomised-controlled-trial
#7
Weiliang Wu, Lili Guan, Xianming Zhang, Xiaoying Li, Yuqiong Yang, Bingpeng Guo, Yonger Ou, Lin Lin, Luqian Zhou, Rongchang Chen
PURPOSE: We conducted a randomised controlled trial to assess the effects of daily breathing pattern changes to stable patients with COPD excluding the confounding factors of inspiratory muscle mobilization, by ensuring the load intensities of two inspiratory training devices were equal. PATIENTS AND METHODS: Sixty patients with COPD were randomised to three groups: resistive-IMT group (T-IMT, 21 patients), threshold-IMT (R-IMT, 19 patients), and a control group (20 patients)...
November 2017: Respiratory Medicine
https://www.readbyqxmd.com/read/29227735/effect-of-8-weeks-of-concurrent-plyometric-and-running-training-on-spatiotemporal-and-physiological-variables-of-novice-runners
#8
Josué Gómez-Molina, Ana Ogueta-Alday, Jesus Camara, Christopher Stickley, Juan García-López
Concurrent plyometric and running training has the potential to improve running economy (RE) and performance through increasing muscle strength and power, but the possible effect on spatiotemporal parameters of running has not been studied yet. The aim of this study was to compare the effect of 8 weeks of concurrent plyometric and running training on spatiotemporal parameters and physiological variables of novice runners. Twenty-five male participants were randomly assigned into two training groups; running group (RG) (n = 11) and running + plyometric group (RPG) (n = 14)...
December 11, 2017: European Journal of Sport Science
https://www.readbyqxmd.com/read/29226176/holistic-segmentation-of-the-lung-in-cine-mri
#9
William Kovacs, Nathan Hsieh, Holger Roth, Chioma Nnamdi-Emeratom, W Patricia Bandettini, Andrew Arai, Ami Mankodi, Ronald M Summers, Jianhua Yao
Duchenne muscular dystrophy (DMD) is a childhood-onset neuromuscular disease that results in the degeneration of muscle, starting in the extremities, before progressing to more vital areas, such as the lungs. Respiratory failure and pneumonia due to respiratory muscle weakness lead to hospitalization and early mortality. However, tracking the disease in this region can be difficult, as current methods are based on breathing tests and are incapable of distinguishing between muscle involvements. Cine MRI scans give insight into respiratory muscle movements, but the images suffer due to low spatial resolution and poor signal-to-noise ratio...
October 2017: Journal of Medical Imaging
https://www.readbyqxmd.com/read/29200637/combined-respiratory-muscle-training-facilitates-expiratory-muscle-activity-in-stroke-patients
#10
Myeong-Rae Jo, Nan-Soo Kim
[Purpose] The aim of this study was to investigate the effect of combined respiratory muscle training on expiratory muscle activity in stroke patients. [Subjects and Methods] Twenty-five stroke patients were assigned to either the intervention group (n=12) or the control group (n=13). Both groups participated in a conventional stroke rehabilitation program, while the intervention group also received respiratory muscle training for 20 to 30 minutes a day, 3 times a week, for 8 weeks. Surface electromyographic data were collected from the rectus abdominis, internal oblique, and external oblique on the paretic side...
November 2017: Journal of Physical Therapy Science
https://www.readbyqxmd.com/read/29178489/daily-inspiratory-muscle-training-lowers-blood-pressure-and-vascular-resistance-in-healthy-men-and-women
#11
Claire M DeLucia, Roxanne M De Asis, E Fiona Bailey
Previous work has shown inspiratory muscle training (IMT) lowers blood pressure after just six weeks, identifying IMT as a potential therapeutic to prevent/treat hypertension. Here, we explore the effects of IMT on respiratory muscle strength and select cardiovascular parameters in recreationally active men and women. Subjects were randomly assigned to IMT (n = 12, 75% maximal inspiratory pressure) or sham training (n = 13, 15% maximum inspiratory pressure) groups and underwent a 6-week intervention comprising 30 breaths day-1 , 5 days week-1 ...
November 24, 2017: Experimental Physiology
https://www.readbyqxmd.com/read/29157904/anti-fatigue-activity-of-an-arabinan-rich-pectin-from-acerola-malpighia-emarginata
#12
Rafael Roberto Klosterhoff, Luiz K S Kanazawa, Ana L D M Furlanetto, Joao V C Peixoto, Claudia R Corso, Eliana R Adami, Marcello Iacomini, Rosalvo T H Fogaça, Alexandra Acco, Silvia M S C Cadena, Roberto Andreatini, Lucimara M C Cordeiro
A fraction composed of an arabinan-rich pectin was extracted from acerola fruit (Malpighia emarginata) and named ACWS. This fraction presented 93% of total carbohydrate, relative molecular weight of 7.5×10(4)g/mol, galacturonic acid, arabinose, galactose, xylose and rhamnose in 52.1:32.4:7.2:4.8:3.5 molar ratio and had its structure confirmed by NMR analysis. The anti-fatigue activity of ACWS was evaluated using the weight load swim test on trained mice. ACWS was orally administered at doses of 50mg/kg, 100mg/kg and 200mg/kg for 28 days...
November 17, 2017: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/29155334/respiratory-muscle-strength-is-decreased-after-maximal-incremental-exercise-in-trained-runners-and-cyclists
#13
Ferid Oueslati, Ahmed Berriri, Jan Boone, Said Ahmaidi
The respiratory muscle fatigue seems to be able to limit exercise performance and may influence the determination of maximal oxygen uptake (V̇O2max) or maximum aerobic work rate during maximal incremental test. The aim of this study was therefore to investigate whether maximal incremental exercise decreases respiratory muscle strength. We hypothesized that respiratory muscle strength (maximal pressure) will decrease after maximal incremental exercise to exhaustion. 36 runners and 23 cyclists completed a maximal incremental test on a treadmill or a cycle ergometer with continuous monitoring of expired gases...
November 18, 2017: Respiratory Physiology & Neurobiology
https://www.readbyqxmd.com/read/29137117/a-systematic-review-and-meta-analysis-of-proteomics-literature-on-the-response-of-human-skeletal-muscle-to-obesity-type-2-diabetes-mellitus-t2dm-versus-exercise-training
#14
REVIEW
Kanchana Srisawat, Sam O Shepherd, Paulo J Lisboa, Jatin G Burniston
We performed a systematic review and meta-analysis of proteomics literature that reports human skeletal muscle responses in the context of either pathological decline associated with obesity/T2DM and physiological adaptations to exercise training. Literature was collected from PubMed and DOAJ databases following PRISMA guidelines using the search terms 'proteom*', and 'skeletal muscle' combined with either 'obesity, insulin resistance, diabetes, impaired glucose tolerance' or 'exercise, training'. Eleven studies were included in the systematic review, and meta-analysis was performed on a sub-set (four studies) of the reviewed literature that reported the necessary primary data...
November 11, 2017: Proteomes
https://www.readbyqxmd.com/read/29128525/respiratory-rehabilitation-in-multiple-sclerosis-a-narrative-review-of-rehabilitation-techniques
#15
REVIEW
J Levy, H Prigent, D Bensmail
BACKGROUND: Respiratory disorders in multiple sclerosis (MS) are an important issue. They can occur early during the course of the disease, are associated with the neurological impairment, and can lead to pneumonia and respiratory failure, which are the main causes of death in advanced MS. Prevailing impaired expiratory muscles and cough abilities has been demonstrated in this population and might constitute a specific target for rehabilitation interventions. However, international guidelines lack recommendations regarding respiratory rehabilitation in MS...
November 8, 2017: Annals of Physical and Rehabilitation Medicine
https://www.readbyqxmd.com/read/29124630/effectiveness-of-inspiratory-muscle-training-on-sleep-and-functional-capacity-to-exercise-in-obstructive-sleep-apnea-a-randomized-controlled-trial
#16
Adília Karoline Ferreira Souza, Armèle Dornelas de Andrade, Ana Irene Carlos de Medeiros, Maria Inês Remígio de Aguiar, Taciano Dias de Souza Rocha, Rodrigo Pinto Pedrosa, Anna Myrna Jaguaribe de Lima
PURPOSE: The aim of this study was to evaluate the effectiveness of inspiratory muscle training (IMT) on sleep and functional capacity to exercise in subjects with obstructive sleep apnea (OSA). METHODS: This is a controlled, randomized, double-blind study conducted in 16 OSA patients divided into two groups: training (IMT: n = 8) and placebo-IMT (P-IMT: n = 8). IMT was conducted during 12 weeks with a moderate load (50-60% of maximal inspiratory pressure-MIP), while P-IMT used a load < 20% of MPI...
November 9, 2017: Sleep & Breathing, Schlaf & Atmung
https://www.readbyqxmd.com/read/29114773/the-impact-of-expiratory-muscle-strength-training-on-speech-breathing-in-individuals-with-parkinson-s-disease-a-preliminary-study
#17
Meghan Darling-White, Jessica E Huber
Purpose: The purpose of this study was to examine the impact of expiratory muscle strength training on speech breathing and functional speech outcomes in individuals with Parkinson's disease (PD). Method: Twelve individuals with PD were seen once a week for 8 weeks: 4 pretraining (baseline) sessions followed by a 4-week training period. Posttraining data were collected at the end of the 4th week of training. Maximum expiratory pressure, an indicator of expiratory muscle strength, and lung volume at speech initiation were the primary outcome measures...
November 8, 2017: American Journal of Speech-language Pathology
https://www.readbyqxmd.com/read/29111103/muscle-specific-knockout-of-general-control-of-amino-acid-synthesis-5-gcn5-does-not-enhance-basal-or-endurance-exercise-induced-mitochondrial-adaptation
#18
Jessica R Dent, Vitor F Martins, Kristoffer Svensson, Samuel A LaBarge, Noah C Schlenk, Mary C Esparza, Elisa H Buckner, Gretchen A Meyer, D Lee Hamilton, Simon Schenk, Andrew Philp
OBJECTIVE: Lysine acetylation is an important post-translational modification that regulates metabolic function in skeletal muscle. The acetyltransferase, general control of amino acid synthesis 5 (GCN5), has been proposed as a regulator of mitochondrial biogenesis via its inhibitory action on peroxisome proliferator activated receptor-γ coactivator-1α (PGC-1α). However, the specific contribution of GCN5 to skeletal muscle metabolism and mitochondrial adaptations to endurance exercise in vivo remain to be defined...
October 16, 2017: Molecular Metabolism
https://www.readbyqxmd.com/read/29107291/absence-of-the-kinase-s6k1-mimics-the-effect-of-chronic-endurance-exercise-on-glucose-tolerance-and-muscle-oxidative-stress
#19
C Binsch, T Jelenik, A Pfitzer, M Dille, S Müller-Lühlhoff, S Hartwig, S Karpinski, S Lehr, D G Kabra, A Chadt, M Roden, H Al-Hasani, T R Castañeda
OBJECTIVE: Ribosomal protein S6 Kinase-1 (S6K1) has been linked to resistance exercise-mediated improvements in glycemia. We hypothesized that S6K1 may also play a role in regulating glycemic control in response to endurance exercise training. METHODS: S6k1-knockout (S6K1KO) and WT mice on a 60 cal% high-fat diet were trained for 4 weeks on treadmills, metabolically phenotyped, and compared to sedentary controls. RESULTS: WT mice showed improved glucose tolerance after training...
November 2017: Molecular Metabolism
https://www.readbyqxmd.com/read/29090601/expiratory-muscle-strength-training-improves-swallowing-and-respiratory-outcomes-in-people-with-dysphagia-a-systematic-review
#20
Marinda Brooks, Emma McLaughlin, Nora Shields
PURPOSE: To investigate the effects of expiratory muscle strength training on communication and swallowing outcomes in adults with acquired motor based communication and/or swallowing difficulties of any aetiology. METHOD: A systematic review was conducted. Six databases (CINAHL, MEDLINE, EMBASE, SPEECHBYTE, AMED and PUBMED) were searched from inception until end of May 2016. Randomised and non-randomised controlled studies and pre-test/post-test studies published in English that investigated the effects of expiratory muscle strength training were included...
November 1, 2017: International Journal of Speech-language Pathology
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