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https://www.readbyqxmd.com/read/28100544/oscillatory-whole-body-vibration-improves-exercise-capacity-and-physical-performance-in-pulmonary-arterial-hypertension-a-randomised-clinical-study
#1
Felix Gerhardt, Daniel Dumitrescu, Carina Gärtner, Ralf Beccard, Thomas Viethen, Tilmann Kramer, Stephan Baldus, Martin Hellmich, Eckhard Schönau, Stephan Rosenkranz
OBJECTIVE: In patients with pulmonary arterial hypertension (PAH), supportive therapies may be beneficial in addition to targeted medical treatment. Here, we evaluated the effectiveness and safety of oscillatory whole-body vibration (WBV) in patients on stable PAH therapy. METHODS: Twenty-two patients with PAH (mean PAP≥25 mm Hg and pulmonary arterial wedge pressure (PAWP)≤15 mm Hg) who were in world health organization (WHO)-Functional Class II or III and on stable PAH therapy for≥3 months, were randomised to receive WBV (16 sessions of 1-hour duration within 4 weeks) or to a control group, that subsequently received WBV...
January 18, 2017: Heart: Official Journal of the British Cardiac Society
https://www.readbyqxmd.com/read/28096757/effects-of-ingesting-a-pre-workout-dietary-supplement-with-and-without-synephrine-for-8%C3%A2-weeks-on-training-adaptations-in-resistance-trained-males
#2
Y Peter Jung, Conrad P Earnest, Majid Koozehchian, Minye Cho, Nick Barringer, Dillon Walker, Christopher Rasmussen, Mike Greenwood, Peter S Murano, Richard B Kreider
BACKGROUND: The purpose of this study was to examine whether ingesting a pre-workout dietary supplement (PWS) with and without synephrine (S) during training affects training responses in resistance-trained males. METHODS: Resistance-trained males (N = 80) were randomly assigned to supplement their diet in a double-blind manner with either a flavored placebo (PLA); a PWS containing beta-alanine (3 g), creatine nitrate as a salt (2 g), arginine alpha-ketoglutarate (2 g), N-Acetyl-L-Tyrosine (300 mg), caffeine (284 mg), Mucuna pruiriens extract standardized for 15% L-Dopa (15 mg), Vitamin C as Ascorbic Acid (500 mg), niacin (60 mg), folate as folic acid (50 mg), and Vitamin B12 as Methylcobalamin (70 mg); or, the PWS supplement with Citrus aurantium extract containing 20 mg of synephrine (PWS + S) once per day for 8-weeks during training...
2017: Journal of the International Society of Sports Nutrition
https://www.readbyqxmd.com/read/28090141/do-maximal-aerobic-power-and-blood-lactate-concentration-affect-specific-judo-fitness-test-performance-in-female-judo-athletes
#3
H Garbouj, M A Selmi, R Haj Sassi, M Haj Yahmed, K Chamari, A Chaouachi
The Special Judo Fitness Test (SJFT) has become the test most widely used by coaches and physical trainers for assessment of competitors' judo-specific physical aptitude and training programme prescription. The aim of this study was to investigate the relationship between the SJFT performance indices and both maximal aerobic power and the level of blood lactate concentrations in female judo athletes. Seventeen female judokas (age: 21.9±1.6 years, body mass: 74.6±27.4 kg, height: 164.5±8.6 cm; BMI: 27.1±8...
December 2016: Biology of Sport
https://www.readbyqxmd.com/read/28067808/effects-of-beetroot-juice-supplementation-on-cardiorespiratory-endurance-in-athletes-a-systematic-review
#4
REVIEW
Raúl Domínguez, Eduardo Cuenca, José Luis Maté-Muñoz, Pablo García-Fernández, Noemí Serra-Paya, María Carmen Lozano Estevan, Pablo Veiga Herreros, Manuel Vicente Garnacho-Castaño
Athletes use nutritional supplementation to enhance the effects of training and achieve improvements in their athletic performance. Beetroot juice increases levels of nitric oxide (NO), which serves multiple functions related to increased blood flow, gas exchange, mitochondrial biogenesis and efficiency, and strengthening of muscle contraction. These biomarker improvements indicate that supplementation with beetroot juice could have ergogenic effects on cardiorespiratory endurance that would benefit athletic performance...
January 6, 2017: Nutrients
https://www.readbyqxmd.com/read/28056364/estimation-of-biogas-and-methane-yields-in-an-uasb-treating-potato-starch-processing-wastewater-with-backpropagation-artificial-neural-network
#5
Philip Antwi, Jianzheng Li, Portia Opoku Boadi, Jia Meng, En Shi, Kaiwen Deng, Francis Kwesi Bondinuba
Three-layered feedforward backpropagation (BP) artificial neural networks (ANN) and multiple nonlinear regression (MnLR) models were developed to estimate biogas and methane yield in an upflow anaerobic sludge blanket (UASB) reactor treating potato starch processing wastewater (PSPW). Anaerobic process parameters were optimized to identify their importance on methanation. pH, total chemical oxygen demand, ammonium, alkalinity, total Kjeldahl nitrogen, total phosphorus, volatile fatty acids and hydraulic retention time selected based on principal component analysis were used as input variables, whiles biogas and methane yield were employed as target variables...
December 16, 2016: Bioresource Technology
https://www.readbyqxmd.com/read/28045340/the-sensitivity-of-the-alternative-maximal-accumulated-oxygen-deficit-method-to-discriminate-training-status
#6
Alessandro M Zagatto, Fabio Y Nakamura, Fabio Milioni, Willian E Miyagi, Rodrigo A B de Poli, Johnny Padulo, Nicola L Bragazzi, Marcelo Papoti
The purpose of the study was to investigate the sensitivity of an alternative maximal accumulated oxygen deficit (MAODALT) method to discriminate the "anaerobic" capacity while comparing: least trained (LT) participants (n = 12), moderately trained (MT) participants (n = 12), endurance trained (ET) participants (n = 16), and rugby (RG) players (n = 11). Participants underwent a graded exercise test on a treadmill and a supramaximal effort for assessing MAODALT. MAODALT was calculated as the sum of oxygen equivalents from the phosphagen and glycolytic metabolic pathways...
January 3, 2017: Journal of Sports Sciences
https://www.readbyqxmd.com/read/28044282/are-prepubertal-children-metabolically-comparable-to-well-trained-adult-endurance-athletes
#7
REVIEW
Sébastien Ratel, Anthony J Blazevich
It is well acknowledged that prepubertal children have smaller body dimensions and a poorer mechanical (movement) efficiency, and thus a lower work capacity than adults. However, the scientific evidence indicates that prepubertal children have a greater net contribution of energy derived from aerobic metabolism in exercising muscle and reduced susceptibility to muscular fatigue, which makes them metabolically comparable to well-trained adult endurance athletes. For example, the relative energy contribution from oxidative and non-oxidative (i...
January 2, 2017: Sports Medicine
https://www.readbyqxmd.com/read/28034783/cerebellar-insulin-igf-1-signaling-in-diabetic-rats-effects-of-exercise-training
#8
Mariana Eiras Borges, Alessandra Mussi Ribeiro, José Rodrigo Pauli, Luciana Mendonça Arantes, Eliete Luciano, Leandro Pereira de Moura, José Alexandre Curiacos de Almeida Leme, Alessandra Medeiros, Natália Oliveira Bertolini, Clarice Yoshiko Sibuya, Ricardo José Gomes
The Diabetes Mellitus (DM) is a chronic disease associated with loss of brain regions such as the cerebellum, increasing the risk of developing neurodegenerative diseases such as Parkinson's disease (PD). In the brain of diabetic and PD organisms the insulin/IGF-1 signaling is altered. Exercise training is an effective intervention for the prevention of neurodegerative diseases since it release neurotrophic factors and regulating insulin/IGF-1 signaling in the brain. This study aimed to evaluate the proteins involved in the insulin/IGF-1 pathway in the cerebellum of diabetic rats subjected to exercise training protocol...
December 26, 2016: Neuroscience Letters
https://www.readbyqxmd.com/read/28033124/variances-in-strength-and-conditioning-practice-in-elite-rugby-union-between-the-northern-and-southern-hemispheres
#9
Thomas W Jones, Andrew Smith, Lindsay S Macnaughton, Duncan N French
The strength and conditioning (S&C) practices in elite Rugby Union (RU) have previously been detailed. There is also research which indicates playing styles can differ between Northern hemisphere (NH) and Southern hemisphere (SH) teams. It is not presently known if these variances in playing styles are reflected in the S&C practices of those supporting NH and SH teams. As such, the present study examines any variances in S&C practices between those supporting NH and SH elite level teams. A validated questionnaire was employed that comprised 7 sections; personal details, physical testing, strength and power development, concurrent training, unique aspects of the programme and any further relevant information regarding prescribed training programmes...
December 20, 2016: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28033123/accuracy-of-a-modified-lactate-minimum-test-and-reverse-lactate-threshold-test-to-determine-maximal-lactate-steady-state
#10
Patrick Wahl, Christian Manunzio, Florian Vogt, Sarah Strütt, Prisca Volmary, Wilhelm Bloch, Joachim Mester
This study evaluated the accuracy of a modified-lactate-minimum-test (mLMT), a modified-reverse-lactate-threshold-test (mRLT), in comparison to two established threshold concepts (OBLA & mDmax) to determine power output at maximal-lactate-steady-state (MLSS) in cycling. Nineteen subjects performed an mLMT, an mRLT, a graded-exercise-test (100W start, +20W every 3 min) and 3 or more constant-load tests of 30 minutes to determine power output at MLSS. The mLMT and mRLT both consisted of an initial lactate priming-segment, followed by a short recovery phase...
December 20, 2016: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28031756/does-the-mthfr-a1298c-polymorphism-modulate-the-cardiorespiratory-response-to-training
#11
Paweł Cięszczyk, Aleksandra Zarębska, Zbigniew Jastrzębski, Michał Sawczyn, Izabela Kozakiewicz-Drobnik, Agata Leońska-Duniec, Mariusz Kaczmarczyk, Agnieszka Maciejewska-Skrendo, Piotr Żmijewski, Grzegorz Trybek, Wojciech Smółka, Jan Pilch, Katarzyna Leźnicka, Ewelina Lulińska-Kuklik, Marek Sawczuk, Myosotis Massidda
The 5,10-methylenetetrahydrofolate reductase gene (MTHFR) A1298C polymorphic variant is a candidate to explain the individual differences in trainability and response to exercise training. Therefore, the aim of the study was to verify whether the A1298C polymorphism influenced the aerobic and anaerobic performance as well as body and mass composition in young Polish women following low-high impact aerobic exercise training. Two hundred and one women aged 21 ± 1 years (range 19-24) were included in the study...
December 1, 2016: Journal of Human Kinetics
https://www.readbyqxmd.com/read/28030533/physical-and-physiological-profile-of-wrestler-athletes-short-review
#12
Helmi Chaabene, Yassine Negra, Raja Bouguezzi, Bessem Mkaouer, Emerson Franchini, Ursula Julio, Younés Hachana
Wrestling is one of the oldest combat sports, disputed since the ancient Greek Olympic Games. This combat sport discipline has caught the attention of scientists since 1943 which is the date that matches the appearance of the first scientific research dealing with wrestling. The current short review aimed to summarize and critically analyze the scientific literature related to wrestling's physical and physiological attributes and to provide practical recommendations for testing/training together with new perspective and areas of future scientific research...
December 24, 2016: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28011098/serum-igf-i-igfbp-3-and-als-concentrations-and-physical-performance-in-young-swimmers-during-a-training-season
#13
H Tourinho Filho, M Pires, E F Puggina, M Papoti, R Barbieri, C E Martinelli
INTRODUCTION: The GH/IGF-I axis is a system of growth mediators, receptors, and binding proteins that regulate somatic and tissue growth; and it has been shown that exercise programs are related to the anabolic function of this axis. OBJECTIVE: The aim of this study was to analyse the changes of serum IGF-I concentration and that of its binding proteins IGFBP-3 and ALS in adolescent swimmers at different stages of a training season, and compare them with physical performance parameters and body composition of the athletes...
December 18, 2016: Growth Hormone & IGF Research
https://www.readbyqxmd.com/read/28000342/a-new-model-of-short-acceleration-based-training-improves-exercise-performance-in-old-mice
#14
R Niel, M Ayachi, L Mille-Hamard, L Le Moyec, P Savarin, M-J Clement, S Besse, T Launay, V L Billat, I Momken
In order to identify a more appealing exercise strategy for the elderly, we studied a mouse model to determine whether a less time-consuming training program would improve exercise performance, enzyme activities, mitochondrial respiration, and metabolomic parameters. We compared the effects of short-session (acceleration-based) training with those of long-session endurance training in 23-month-old mice. The short-session training consisted of five acceleration-based treadmill running sessions over 2 weeks (the acceleration group), whereas the endurance training consisted of five-one-hour treadmill sessions per week for 4 weeks (the endurance group)...
December 20, 2016: Scandinavian Journal of Medicine & Science in Sports
https://www.readbyqxmd.com/read/27990224/the-relationship-between-aerobic-and-anaerobic-performance-in-recreational-runners
#15
Zachary M Gillen, Frank B Wyatt, Jason B Winchester, Dalton A Smith, Vidhi Ghetia
Research has indicated that combined aerobic and anaerobic training (concurrent training) may improve aerobic performance greater than aerobic training alone. The purpose of this investigation was to establish any associations between aerobic and anaerobic performance. Eleven participants (n = 11, age = 34.1 ± 13 years, VO2max = 58.4 ± 7.8) volunteered for this study. Participants were asked for endurance training experience (4.7 ± 3.7 years) and resistance training experience (4.1 ± 4.6 years). To meet training status, participants were to have a VO2max in the 80(th) percentile as per ACSM guidelines...
2016: International Journal of Exercise Science
https://www.readbyqxmd.com/read/27931052/a-6-week-sprint-interval-training-program-changes-anaerobic-power-quadriceps-moment-and-subcutaneous-tissue-thickness
#16
S Han, H Lee, H Kim, D Kim, C Choi, J Park
We examined the effects of a 6-week 40-m one-way sprint interval training program (based on sprint time). 13 untrained healthy male collegiate students performed six 40-m sprints with a 60-s resting interval between sprints during the first week, and one sprint was added each week until the sixth week. If the 40-m sprint time exceeded 110% of the fastest baseline 40-m sprint time, the run was repeated. Repeated-sprint cycling test (every 3 weeks), quadriceps moment (every 2 weeks), and abdominal and thigh subcutaneous tissue thickness (every 2 weeks) were measured...
December 8, 2016: International Journal of Sports Medicine
https://www.readbyqxmd.com/read/27877070/aerobic-power-and-lean-mass-are-indicators-of-competitive-sprint-performance-among-elite-female-cross-country-skiers
#17
Tomas Carlsson, Michail Tonkonogi, Magnus Carlsson
The purpose of this study was to establish the optimal allometric models to predict International Ski Federation's ski-ranking points for sprint competitions (FISsprint) among elite female cross-country skiers based on maximal oxygen uptake ( [Formula: see text]) and lean mass (LM). Ten elite female cross-country skiers (age: 24.5±2.8 years [mean ± SD]) completed a treadmill roller-skiing test to determine [Formula: see text] (ie, aerobic power) using the diagonal stride technique, whereas LM (ie, a surrogate indicator of anaerobic capacity) was determined by dual-emission X-ray anthropometry...
2016: Open Access Journal of Sports Medicine
https://www.readbyqxmd.com/read/27871205/the-effects-of-two-different-swimming-training-periodization-on-physiological-parameters-at-various-exercise-intensities
#18
Vicente Javier Clemente-Suárez, Athanasios Dalamitros, João Ribeiro, Ana Sousa, Ricardo J Fernandes, J Paulo Vilas-Boas
This study analysed the effects of two different periodization strategies on physiological parameters at various exercise intensities in competitive swimmers. Seventeen athletes of both sexes were divided to two groups, the traditional periodization (TPG, n = 7) and the reverse periodization group (RPG, n = 10). Each group followed a 10-week training period based on the two different periodization strategies. Before and after training, swimming velocity (SV), energy expenditure (EE), energy cost (EC) and percentage of aerobic (%Aer) and anaerobic (%An) energy contribution to the swimming intensities corresponding to the aerobic threshold (AerT), the anaerobic threshold (AnT) and the velocity at maximal oxygen uptake (vVO2max) were measured...
November 21, 2016: European Journal of Sport Science
https://www.readbyqxmd.com/read/27843418/effects-of-acute-carbohydrate-ingestion-on-anaerobic-exercise-performance
#19
Ben M Krings, Jaden A Rountree, Matthew J McAllister, Patrick M Cummings, Timothy J Peterson, Brent J Fountain, JohnEric W Smith
BACKGROUND: Carbohydrate (CHO) supplementation during endurance exercises has been shown to increase performance, but there is limited research with CHO supplementation during strength and conditioning exercises. Therefore, the purpose of this study was to examine the effects of various levels of CHO ingestion during acute testing sessions requiring participants to complete a strength and conditioning program designed for collegiate athletes. METHODS: Participants (n = 7) performed a series of exercises while ingesting an amino-acid electrolyte control (CON) or CON plus varying levels of CHO...
2016: Journal of the International Society of Sports Nutrition
https://www.readbyqxmd.com/read/27833721/combined-effects-of-lignosus-rhinocerotis-supplementation-and-resistance-training-on-isokinetic-muscular-strength-and-power-anaerobic-and-aerobic-fitness-level-and-immune-parameters-in-young-males
#20
Chee Keong Chen, Nor Faeiza Hamdan, Foong Kiew Ooi, Wan Zuraida Wan Abd Hamid
BACKGROUND: This study investigated the effects of Lignosus rhinocerotis (LRS) supplementation and resistance training (RT) on isokinetic muscular strength and power, anaerobic and aerobic fitness, and immune parameters in young males. METHODS: Participants were randomly assigned to four groups: Control (C), LRS, RT, and combined RT-LRS (RT-LRS). Participants in the LRS and RT-LRS groups consumed 500 mg of LRS daily for 8 weeks. RT was conducted 3 times/week for 8 weeks for participants in the RT and RT-LRS groups...
2016: International Journal of Preventive Medicine
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