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European Journal of Applied Physiology

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https://www.readbyqxmd.com/read/28434078/muscle-size-and-strength-debunking-the-completely-separate-phenomena-suggestion
#1
LETTER
Thomas G Balshaw, Garry J Massey, Thomas M Maden-Wilkinson, Jonathan P Folland
No abstract text is available yet for this article.
April 22, 2017: European Journal of Applied Physiology
https://www.readbyqxmd.com/read/28434077/muscle-size-and-strength-another-study-not-designed-to-answer-the-question
#2
LETTER
Samuel L Buckner, Scott J Dankel, Kevin T Mattocks, Matthew B Jessee, J Grant Mouser, Jeremy P Loenneke
No abstract text is available yet for this article.
April 22, 2017: European Journal of Applied Physiology
https://www.readbyqxmd.com/read/28432421/the-effect-of-nitric-oxide-synthase-inhibition-with-and-without-inhibition-of-prostaglandins-on-blood-flow-in-different-human-skeletal-muscles
#3
Ilkka Heinonen, Bengt Saltin, Ylva Hellsten, Kari K Kalliokoski
PURPOSE: Animal studies suggest that the inhibition of nitric oxide synthase (NOS) affects blood flow differently in different skeletal muscles according to their muscle fibre type composition (oxidative vs glycolytic). Quadriceps femoris (QF) muscle consists of four different muscle parts: vastus intermedius (VI), rectus femoris (RF), vastus medialis (VM), and vastus lateralis (VL) of which VI is located deep within the muscle group and is generally regarded to consist mostly of oxidative muscle fibres...
April 21, 2017: European Journal of Applied Physiology
https://www.readbyqxmd.com/read/28432420/sex-differences-in-neuromuscular-function-after-repeated-eccentric-contractions-of-the-knee-extensor-muscles
#4
Andrea Lee, Jake Baxter, Claire Eischer, Matt Gage, Sandra Hunter, Tejin Yoon
PURPOSE: This study examined the mechanisms for force and power reduction during and up to 48 h after maximal eccentric contractions of the knee extensor muscles in young men and women. METHODS: 13 men (22.8 ± 2.6 years) and 13 women (21.6 ± 2.2 years) performed 150 maximal effort eccentric contractions (5 sets of 30) with the knee extensor muscles at 60° s(-1). Maximal voluntary isometric contractions (MVIC) and maximal voluntary concentric contractions (MVCC) were performed before and after the 150 eccentric contractions...
April 21, 2017: European Journal of Applied Physiology
https://www.readbyqxmd.com/read/28429109/associations-of-maximal-voluntary-isometric-hip-extension-torque-with-muscle-size-of-hamstring-and-gluteus-maximus-and-intra-abdominal-pressure
#5
Kota Tayashiki, Kosuke Hirata, Kiraku Ishida, Hiroaki Kanehisa, Naokazu Miyamoto
PURPOSE: Muscle size of the hamstring and gluteus maximus (GM) as well as intra-abdominal pressure (IAP) are considered as factors affecting the torque development during hip extension. This study examined the associations of torque development during maximal voluntary isometric hip extension with IAP and muscle size of the hamstring and GM. METHODS: Anatomical cross-sectional area (ACSA) of the hamstring and thickness of GM were determined in 20 healthy young males using an ultrasonography apparatus (Experiment 1)...
April 20, 2017: European Journal of Applied Physiology
https://www.readbyqxmd.com/read/28424870/high-intensity-interval-training-does-not-impair-strength-gains-in-response-to-resistance-training-in-premenopausal-women
#6
Paulo Gentil, Claudio Andre Barbosa de Lira, Suedi Gonçalves Cardoso Filho, Cauê Vazquez La Scala Teixeira, James Steele, James Fisher, Juliana Alves Carneiro, Mário Hebling Campos
PURPOSE: To compare the increases in upper- and lower-body muscle strength in premenopausal women performing resistance training (RT) alone or alongside concurrent high-intensity interval training (CT). METHODS: Sixteen women (26-40 years) were randomly assigned into two groups that performed either RT or CT. Both groups performed the same RT program; however, CT performed additional high-intensity interval training (HIIT) on a bicycle ergometer before RT. The study lasted 8 weeks and the participants were tested for ten repetition maximum (10RM) load in elbow flexion (barbell biceps curl) and knee extension exercises pre- and post-intervention...
April 19, 2017: European Journal of Applied Physiology
https://www.readbyqxmd.com/read/28421275/no-association-between-hand-and-foot-temperature-responses-during-local-cold-stress-and-rewarming
#7
Lena Norrbrand, Roger Kölegård, Michail E Keramidas, Igor B Mekjavic, Ola Eiken
PURPOSE: The purpose was to examine whether associations exist between temperature responses in the fingers vs. toes and hand vs. foot during local cold-water immersion and rewarming phases. METHODS: Seventy healthy subjects (58 males, 12 females) immersed their right hand or right foot, respectively, in 8 °C water for 30 min (CWI phase), followed by a 15-min spontaneous rewarming (RW) in 25 °C air temperature. RESULTS: Temperature was lower in the toes than the fingers during the baseline phase (27...
April 18, 2017: European Journal of Applied Physiology
https://www.readbyqxmd.com/read/28409398/middle-cerebral-artery-blood-flow-velocity-during-a-4%C3%A2-km-cycling-time-trial
#8
Ben Rattray, Brittany A Smale, Joseph M Northey, Disa J Smee, Nathan G Versey
PURPOSE: This study sought to describe middle cerebral artery blood flow velocity (MCAv) during a 4 km cycling time trial, and relate it to different pacing strategies adopted by participants. METHODS: After familiarisation and a standardised exercise protocol, 15 male trained cyclists rode a 4 km time trial on a cycling ergometer. MCAv was assessed via transcranial Doppler ultrasound in the right hemisphere at resting baseline, and throughout the time trial. Mean arterial pressure, end-tidal partial pressure of carbon dioxide (PetCO2) and heart rate were assessed alongside MCAv...
April 13, 2017: European Journal of Applied Physiology
https://www.readbyqxmd.com/read/28409397/the-effect-of-high-intensity-aerobic-interval-training-on-markers-of-systemic-inflammation-in-sedentary-populations
#9
Nicholas G Allen, Samuel M Higham, Amy E Mendham, Tegan E Kastelein, Penelope S Larsen, Rob Duffield
PURPOSE: This study examined the effects of high-intensity interval training (HIIT; 30 s sprint, 4-5 min passive recovery) and prolonged intermittent sprint training (PIST; 10 s sprint, 2-3 min moderate exercise) on the systemic inflammatory markers C-reactive protein (CRP) and tumor necrosis factor-α (TNF-α), aerobic capacity, and anthropometry in a middle-aged, sedentary population. METHODS: Fifty-five sedentary adults (age 49.2 ± 6.1 years) were randomised into HIIT (n = 20), PIST (n = 21), or a sedentary control group (CTRL n = 14)...
April 13, 2017: European Journal of Applied Physiology
https://www.readbyqxmd.com/read/28409396/factors-influencing-the-post-exercise-hepcidin-25-response-in-elite-athletes
#10
Peter Peeling, Alannah K A McKay, David B Pyne, Kym J Guelfi, Rachel H McCormick, Coby M Laarakkers, Dorine W Swinkels, Laura A Garvican-Lewis, Megan L R Ross, Avish P Sharma, Jill J Leckey, Louise M Burke
PURPOSE: The extent to which hepcidin regulation after acute bouts of exercise is influenced by baseline (resting) concentrations of key iron parameters remains uncertain. This investigation explored the influence of selected iron parameters and 25-km race walk time on 3-h post-exercise hepcidin-25 levels in international-level race walkers. METHODS: Twenty-four male race walkers completed a graded exercise test and a 25-km race-walk trial. Throughout the 25-km race-walk, venous blood samples were collected pre-exercise, immediately post-exercise, and at 3-h post-exercise...
April 13, 2017: European Journal of Applied Physiology
https://www.readbyqxmd.com/read/28409395/spinal-and-corticospinal-pathways-are-differently-modulated-when-standing-at-the-bottom-and-the-top-of-a-three-step-staircase-in-young-and-older-adults
#11
Johanna Johannsson, Jacques Duchateau, Stéphane Baudry
PURPOSE: This study investigated the modulation of spinal (group Ia afferents) and corticospinal pathways when young (22.7 ± 1.3 years) and older adults (72.2 ± 7.9 years) stood at the bottom and at the top of a three-step staircase equipped with force platforms. METHOD: Changes in submaximal H-reflex amplitude (H 50) and slope of the H-reflex input-output relation (spinal pathway), and in amplitude of motor-evoked potentials (MEP) triggered by transcranial magnetic stimulation (corticospinal pathway) at two intensities (1...
April 13, 2017: European Journal of Applied Physiology
https://www.readbyqxmd.com/read/28401310/the-efficacy-of-periodised-resistance-training-on-neuromuscular-adaptation-in-older-adults
#12
Jenny A Conlon, Robert U Newton, James J Tufano, Luis E Peñailillo, Harry G Banyard, Amanda J Hopper, Ashley J Ridge, G Gregory Haff
PURPOSE: This study compared the effect of periodised versus non-periodised (NP) resistance training on neuromuscular adaptions in older adults. METHODS: Forty-one apparently healthy untrained older adults (female = 21, male = 20; 70.9 ± 5.1 years; 166.3 ± 8.2 cm; 72.9 ± 13.4 kg) were recruited and randomly stratified to an NP, block periodised (BP), or daily undulating periodised (DUP) training group. Outcome measures were assessed at baseline and following a 22-week resistance training intervention (3 day week(-1)), including: muscle cross-sectional area (CSA), vertical jump performance, isometric and isokinetic peak torque, isometric rate of force development (RFD), and muscle activation...
April 11, 2017: European Journal of Applied Physiology
https://www.readbyqxmd.com/read/28397006/acute-effect-of-stretching-one-leg-on-regional-arterial-stiffness-in-young-men
#13
Yosuke Yamato, Natsuki Hasegawa, Shumpei Fujie, Shigehiko Ogoh, Motoyuki Iemitsu
PURPOSE: Our previous study demonstrated that a single bout of stretching exercises acutely reduced arterial stiffness. We hypothesized that this acute vascular response is due to regional mechanical stimulation of the peripheral arteries. To test this hypothesis, we examined the effect of a single bout of passive one leg stretching on arterial stiffness, comparing the stretched and the non-stretched leg in the same subject. METHODS: Twenty-five healthy young men (20...
April 10, 2017: European Journal of Applied Physiology
https://www.readbyqxmd.com/read/28391394/lifelong-training-improves-anti-inflammatory-environment-and-maintains-the-number-of-regulatory-t-cells-in-masters-athletes
#14
Luciele G Minuzzi, Luis Rama, Nicolette C Bishop, Fátima Rosado, António Martinho, Artur Paiva, Ana M Teixeira
PURPOSE: The purpose of this study was to quantify and characterize peripheral blood regulatory T cells (Tregs), as well as the IL-10 plasma concentration, in Masters athletes at rest and after an acute exhaustive exercise test. METHODS: Eighteen Masters athletes (self-reported training: 24.6 ± 1.83 years; 10.27 ± 0.24 months and 5.45 ± 0.42 h/week per each month trained) and an age-matched control group of ten subjects (that never took part in regular physical training) volunteered for this study...
April 8, 2017: European Journal of Applied Physiology
https://www.readbyqxmd.com/read/28391393/dose-effects-of-new-zealand-blackcurrant-on-substrate-oxidation-and-physiological-responses-during-prolonged-cycling
#15
Matthew David Cook, Stephen David Myers, Mandy Lucinda Gault, Victoria Charlotte Edwards, Mark Elisabeth Theodorus Willems
PURPOSE: It has been previously shown that New Zealand blackcurrant (NZBC) extract increased fat oxidation during short duration cycling. The present study examined the effect of different doses of NZBC extract on substrate oxidation and physiological responses during prolonged cycling. METHODS: Using a randomized counterbalanced Latin-square design, 15 endurance-trained male cyclists (age: 38 ± 12 years, height: 187 ± 5 cm, body mass: 76 ± 10 kg, [Formula: see text]: 56 ± 8 mL kg(-1) min(-1), and mean ± SD) completed four separate 120-min cycling bouts at 65% [Formula: see text] after ingesting no dose, or one of three doses (300, 600, or 900 mg day(-1)) of NZBC extract (CurraNZ™) for 7 days...
April 8, 2017: European Journal of Applied Physiology
https://www.readbyqxmd.com/read/28391392/reliability-of-quadriceps-surface-electromyography-measurements-is-improved-by-two-vs-single-site-recordings
#16
T G Balshaw, A Fry, T M Maden-Wilkinson, P W Kong, J P Folland
PURPOSE: The reliability of surface electromyography (sEMG) is typically modest even with rigorous methods, and therefore further improvements in sEMG reliability are desirable. This study compared the between-session reliability (both within participant absolute reliability and between-participant relative reliability) of sEMG amplitude from single vs. average of two distinct recording sites, for individual muscle (IM) and whole quadriceps (WQ) measures during voluntary and evoked contractions...
April 8, 2017: European Journal of Applied Physiology
https://www.readbyqxmd.com/read/28391391/the-acute-benefits-and-risks-of-passive-stretching-to-the-point-of-pain
#17
Pornpimol Muanjai, David A Jones, Mantas Mickevicius, Danguole Satkunskiene, Audrius Snieckus, Albertas Skurvydas, Sigitas Kamandulis
PURPOSE: This study evaluated the acute effects of two different stretch intensities on muscle damage and extensibility. METHODS: Twenty-two physically active women (age 20 ± 1.0 years) were divided into two matched groups and undertook eight sets of 30-s passive hamstring stretching. One group stretched to the point of discomfort (POD) and the other to the point of pain (POP). Hamstring passive torque, sit and reach (S&R), straight leg raise (SLR), and markers of muscle damage were measured before, immediately after stretching and 24 h later...
April 8, 2017: European Journal of Applied Physiology
https://www.readbyqxmd.com/read/28386694/effect-of-alcohol-after-muscle-damaging-resistance-exercise-on-muscular-performance-recovery-and-inflammatory-capacity-in-women
#18
Danielle E Levitt, Hui-Ying Luk, Anthony A Duplanty, Brian K McFarlin, David W Hill, Jakob L Vingren
PURPOSE: To investigate the effect of acute alcohol consumption on muscular performance recovery, assessed by maximal torque production, and on inflammatory capacity, assessed by lipopolysaccharide (LPS)-stimulated cytokine production, following muscle-damaging resistance exercise in women. METHODS: Thirteen recreationally resistance-trained women completed two identical exercise bouts (300 maximal single-leg eccentric leg extensions) followed by alcohol (1.09 g ethanol kg(-1) fat-free body mass) or placebo ingestion...
April 6, 2017: European Journal of Applied Physiology
https://www.readbyqxmd.com/read/28382551/high-doses-of-vitamin-c-plus-e-reduce-strength-training-induced-improvements-in-areal-bone-mineral-density-in-elderly-men
#19
Astrid Kamilla Stunes, Unni Syversen, Sveinung Berntsen, Gøran Paulsen, Tonje H Stea, Ken J Hetlelid, Hilde Lohne-Seiler, Mats Peder Mosti, Thomas Bjørnsen, Truls Raastad, Glenn Haugeberg
PURPOSE: Resistance training is beneficial for maintaining bone mass. We aimed to investigate the skeletal effects of high doses of antioxidants [vitamin C + E (α-tocopherol)] supplementation during 12-week supervised strength training in healthy, elderly men METHODS: Design: double-blinded randomized placebo-controlled study. Participants followed a supervised, undulating periodic exercise program with weekly adjusted load: 3 sessions/week and 3-15 repetitions maximum (RM) sets/exercise...
April 5, 2017: European Journal of Applied Physiology
https://www.readbyqxmd.com/read/28382550/sitting-position-affects-performance-in-cross-country-sit-skiing
#20
M Lund Ohlsson, M S Laaksonen
PURPOSE: In cross-country sit-skiing (XCSS), athletes with reduced trunk control predominantly sit with the knees higher than the hips (KH); a position often associated with large spinal flexion. Therefore, to improve spinal curvature a new sledge with frontal trunk support, where knees are lower than hips (KL) was created. It was hypothesized that the KL position would improve respiratory function and enhance performance in seated double-poling compared to KH. METHODS: Ten female able-bodied cross-country skiers (age 25...
April 5, 2017: European Journal of Applied Physiology
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