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Omlin Teye T University of - - 2014
Intense swimming causes circulatory lactate accumulation in rainbow trout because lactate disposal (Rd) is not stimulated as strongly as lactate appearance (Ra). This mismatch suggests that maximal Rd is limited by tissue capacity to metabolize lactate. This study uses exogenous lactate to investigate what constrains maximal Rd and minimal Ra. ...
Devlin J J Institute of Cardiovascular and Medical Sciences - - - 2014
High-intensity exercise is time-limited by onset of fatigue, marked by accumulation of blood lactate. This is accentuated at maximal, all-out exercise that rapidly accumulates high blood lactate. The optimal active recovery intensity for clearing lactate after such maximal, all-out exercise remains unknown. Thus, we studied the intensity-dependence of lactate clearance ...
Leicht C A CA School of Sport, Exercise, and Health Sciences, The Peter Harrison Centre for Disability Sport, Loughborough University, Loughborough, LE11 3TU, UK, - - 2014
The purpose of this study was to analyse the influence of spinal cord injury level on blood lactate (BLa) and ventilatory thresholds. Ten athletes with tetraplegia (TETRA) and nine athletes with paraplegia (PARA) performed a graded wheelchair propulsion treadmill exercise step test to exhaustion. The aerobic and anaerobic BLa thresholds, ...
Hinzpeter Jaime J University of Chile Clinical Hospital, Santiago, - - 2014
During competition, high-performance swimmers are subject to repeated physical demands that affect their final performance. Measurement of lactate concentration in blood seeks to indirectly gauge physiologic responses to the increase in physical exercise. Swimmers face multiple maximal-exertion events during competition. Strenuous physical exercise leads to fatigue and, thus, a decrease ...
Edvardsen Elisabeth E Norwegian School of Sport Sciences, Department of Sports Medicine, Oslo, Norway ; Oslo University Hospital, Ullevål, Department of Pulmonary Medicine, Oslo, - - 2014
To describe different end criteria for reaching maximal oxygen uptake (VO2max) during a continuous graded exercise test on the treadmill, and to explore the manner by which different end criteria have an impact on the magnitude of the VO2max result. A sample of 861 individuals (390 women) aged 20-85 years ...
Matsumoto Megumi M Department of Physical Education, College of Humanities and Sciences, Nihon University, 3-25-40, Sakurajosui, Setagaya-ku, Tokyo, - - 2014
To evaluate the effects of lutein-fortified milk administration on running exercise, a voluntary wheel-running model was performed in rats. Four-week-old F344 rats were administered test milk (10 mL/kg) daily following a 4-h fasting period, and their running distances were measured each day for a 9-week period. Total weekly running distance ...
Rosenberger André A Institute of Aerospace Medicine, German Aerospace Center (DLR), Cologne, Germany; Institute of Training Science and Sport Informatics, German Sport University Cologne, Cologne, - - 2014
In this study, we examined the acute effects of a 5-day daily whole-body vibration (WBV) training on electromyography (EMG) responses of the m. rectus femoris and m. gastrocnemius lateralis, heart rate (HR, continuously recorded), and blood lactate levels. The purpose of the study was to investigate the adaptation of muscle ...
Ferley Derek D - - 2013
: Despite a paucity of evidence, uphill running has been touted as a sport-specific resistance-to-movement training tactic capable of enhancing metabolic, muscular and neuromuscular processes in distance runners in ways similar to previously established resistance-to-movement training methods such as heavy and/or explosive strength training and plyometric training. Therefore, the purpose ...
Calegari Ferdinando - - 2013
This summer study evaluated the effect of providing additional fans (cooling) in the resting area within a free-stall dairy barn that had fans and sprinklers in the feeding area and paddock availability. Thirty cows were divided into two homogenous groups and kept in two pens: one had the resting area ...
Coco Marinella - - 2013
Abstract Excitability of primary hand motor cortex (PHMC), evaluated with transcranial magnetic stimulation by using the "1 mV resting motor threshold" method, and capillary blood lactate were measured at the end, as well as 5 and 10 min after a fatiguing hand-grip exercise. The relation between blood lactate and the amplitudes of ...
Teulier Loïc - - 2013
Changes in lactate kinetics as a function of exercise intensity have never been measured in an ectotherm. Continuous infusion of tracer is necessary to quantify rates of lactate appearance (Ra) and disposal (Rd), but it requires double catheterization that could interfere with swimming. Using rainbow trout, our goals were: (1) ...
Currey L M LM AIMS@JCU, Townsville, Australia; Australian Institute of Marine Science, PMB No 3, Townsville, Australia; Centre for Sustainable Tropical Fisheries and Aquaculture, School of Earth and Environmental Sciences, James Cook University, Townsville, - - 2013
Baseline, post-angling and maximum attainable blood lactate concentrations were measured for the fishery species redthroat emperor Lethrinus miniatus to gain insight into the condition of fish released following c. 30 s angling and <45 s air exposure. Mean ± s.d. baseline blood lactate was 1·5 ± 0·6 mmol l(-1) , which increased and plateaued around 6 mmol l(-1) at 15-30 min ...
Jeppesen Tina D - - 2013
Patients with mitochondrial DNA mutations often have elevated plasma lactate at rest and during exercise, but it is unknown whether the high lactate levels are caused by a high production, an impaired oxidation or a combination. We studied lactate kinetics in 10 patients with mtDNA mutations and 10 matched healthy ...
Bertolucci F - - 2013
Background: Polymyositis (PM) and Dermatomyositis (DM) are chronic, inflammatory and autoimmune skeletal muscle disorders characterized by reduced muscle strength, fatigue and myalgia. While inflammation causes muscle damage in the early phase, metabolic alterations such as an impairment of oxidative metabolism seem to be responsible for the disability in the chronic ...
Jia Wenzhao - - 2013
The present work describes the first example of real-time non-invasive lactate sensing in human perspiration during exercise events using a flexible printed temporary-transfer tattoo electrochemical biosensor that conforms to the wearer's skin. The new skin-worn enzymatic biosensor exhibits chemical selectivity towards lactate with linearity up to 20 mM and demonstrates ...
Emhoff Chi-An W - - 2013
Lactate has been shown to be an important oxidative fuel. We aimed to quantify total lactate oxidation rate (Rox) and its direct versus indirect (glucose that is gluconeogenically derived from lactate and subsequently oxidized) components (mg⋅kg(-1)⋅min(-1)) during rest and exercise in humans. We also investigated the effects of endurance training, ...
Iwasa Masayo - - 2013
BACKGROUND: This study investigated the effect of fermented milk supplementation on glucose metabolism associated with muscle damage after acute exercise in humans. METHODS: Eighteen healthy young men participated in each of the three trials of the study: rest, exercise with placebo, and exercise with fermented milk. In the exercise trials, ...
Miranda M Cpc - - 2013
To compare five different protocols for estimating the lactate minimum speed (LMS) with that for estimating the maximal lactate steady state (MLSS) in Arabian horses, in order to obtain a more rapid method for monitoring aerobic capacity and prescribing training schedules. Eight purebred Arabian horses were conditioned to exercise on ...
Popescu Silvana - - 2013
BACKGROUND: Tie-stall housing of dairy cows is used extensively worldwide, despite of the welfare concerns regarding the restriction of voluntary movement and limitation of expression of the cows' natural behaviour. The aim of this study was to compare the welfare quality of dairy cows kept in two types of tie-stall ...
James Lewis J - - 2013
The present study investigated the relationship between the milk protein content of a rehydration solution and fluid balance after exercise-induced dehydration. On three occasions, eight healthy males were dehydrated to an identical degree of body mass loss (BML, approximately 1·8 %) by intermittent cycling in the heat, rehydrating with 150 % of ...
Messonnier Laurent André - - 2013
To understand the meaning of the lactate threshold (LT) and to test the hypothesis that endurance training augments lactate kinetics [i.e., rates of appearance and disposal (Ra and Rd, mg·kg(-1)·min(-1)) and metabolic clearance rate (MCR, ml·kg(-1)·min(-1))], we studied six each untrained (UT) and trained (T) subjects during 60-min exercise bouts ...
Omlin Teye T Biology Department and Center for Advanced Research in Environmental Genomics (CAREG), University of Ottawa, Ottawa, Ontario, - - 2013
Transmembrane lactate movements are mediated by monocarboxylate transporters (MCTs), but these proteins have never been characterized in rainbow trout. Our goals were to clone potential trout MCTs, determine tissue distribution, and quantify the effects of exhausting exercise on MCT expression. Such information could prove important to understand the mechanisms underlying ...
Cockburn Emma - - 2013
Introduction: Exercise-induced muscle damage (EIMD) leads to increases in intramuscular proteins observed in the blood stream and delayed-onset of muscle soreness (DOMS), but crucial for athletes are the decrements in muscle performance observed. Previous research has demonstrated that carbohydrate-protein supplements limit these decrements; however, they have primarily used isokinetic dynamometry ...
Hecksteden Anne - - 2013
ABSTRACT: Lactate thresholds are commonly used as estimates of the highest workload where lactate production and elimination are in equilibrium (MLSS). However, due to the high static load on propulsive muscles, lactate kinetics in inline-speedskating may differ significantly from other endurance exercise modes. Therefore, the discipline-specific validity of lactate thresholds ...
Genz J - - 2013
Carassius carassius responds to hypoxic conditions by conversion of lactate into ethanol, which is excreted over the gills. However, a closely related species, Cyprinus carpio, does not possess the ability to produce ethanol and would be expected to accumulate lactate during hypoxic exposure. While the increase in oxygen consumption in ...
Oh Seung-Lyul - - 2013
In the present study, we determined the effects of HX108-CS (mixed extract of Schisandra chinensis and Chaenomeles sinensis) supplementation on lactate accumulation and endurance capacity. Furthermore, we examined CK (creatine kinase), LDH (lactate dehydrogenase) activity to determine whether the HX108-CS affected markers of skeletal muscle injury in vivo and in ...
Bret Carine - - 2012
The present study aimed to investigate (1) whether high-level 400-m track runners of different ethnic origin displayed divergent post-run blood lactate concentrations (p400m[La]) and (2) if this discrepancy was based on differences in lactate exchange and removal abilities. Twenty male African (n = 12) and Caucasian (n = 8) runners, paired in terms of ...
Ramanathan R - - 2012
Research suggests that NADH formed from lactate addition can increase mitochondrial oxygen consumption. However, limited research has assessed the subsequent effects of lactate-mediated mitochondrial oxygen consumption on oxymyoglobin. Therefore, our objective was to assess the effects of bovine mitochondrial oxygen consumption on oxymyoglobin in the presence of lactate, LDH, and ...
Ren Jimin - - 2012
Despite its importance in energy metabolism, lactate in human skeletal muscle has been difficult to detect by noninvasive (1) H-magnetic resonance spectroscopy mainly due to interference from large water and lipid signals. Long echo-time acquisitions at 7 T effectively attenuates the water and lipid signals in forearm muscle allowing direct ...
Montgomery Kristen S - - 2012
Twenty-four women with children 5 years old or younger were interviewed regarding their experiences in losing weight during the postpartum period. Phenomenological interviews were conducted according to Husserl's perspective. Women who participated in the study revealed the issues related to postpartum weight loss: weight struggles, exercise, breast-feeding, eating, and pregnancy ...
Pritchett Kelly - - 2013
An optimal post-exercise nutrition regimen is fundamental for ensuring recovery. Therefore, research has aimed to examine post-exercise nutritional strategies for enhanced training stimuli. Chocolate milk has become an affordable recovery beverage for many athletes, taking the place of more expensive commercially available recovery beverages. Low-fat chocolate milk consists of a ...
James Lewis - - 2013
Sweat is produced during exercise to help dissipate some of the extra heat produced due to an increase in metabolic rate. Inadequate drink ingestion during exercise means athletes finish exercise hypohydrated and when the time between exercise bouts is short, effective rehydration strategies will be necessary to prevent subsequent performance ...
Bertz Fredrik - - 2012
BACKGROUND: Current evidence suggests a combined treatment of postpartum weight loss of diet and exercise. However, to our knowledge, neither their separate and interactive effects nor long-term outcomes have been evaluated. OBJECTIVE: We evaluated whether a 12-wk dietary behavior modification (D) treatment to decrease energy intake, physical exercise behavior modification ...
Ruchat S-M - - 2012
BACKGROUND: Exercise may influence glucose metabolism during pregnancy. We examined the effect of exercise intensity and duration on capillary glucose (CG) responses in pregnant women at low (LR) and high risk (R) for gestational diabetes mellitus (GDM) who followed a modified GDM meal plan. METHODS: Randomization occured at study entry ...
Olin J Tod - - 2012
Carbon dioxide regulates ventilation and cerebral blood flow during exercise. There are significant limitations in breathing systems designed to control end-tidal gas concentrations when used during high-intensity exercise. We designed a simple, inexpensive breathing system which controls end-tidal carbon dioxide ([Formula: see text]) during exercise from rest to peak work ...
Cohen Daniel C - - 2012
BACKGROUND: There is growing evidence that health systems in developed countries are poorly prepared to deal with major incidents. STUDY OBJECTIVES: This study aimed to determine the skills required for successful major incident response, the factors that contribute to a successful major incident exercise, and whether there is a role ...
Rogatzki Matthew J - - 2012
Kinematic, kinetic, and electromyography data were collected from the biceps femoris, rectus femoris (RF), gluteus maximus, and erector spinae (ES) during a step and elliptical exercise at a standardized workload with no hand use. Findings depicted 95% greater ankle plantar flexion (p = .01), 29% more knee extension (p = ...
Hinrichs T - - 2012
Programmes containing health-enhancing physical exercise should be evaluated using standards that are just as rigorous as those required for drug development. In contrast to new medicines, exercise programmes are highly complex. This has to be taken into account when designing the research plan. In order to illustrate the development process ...
Kasharafifard Somayeh - - 2012
Regular physical exercises can affect hormonal system of female athletes. This study evaluated the reproductive hormonal changes after an incremental exercise in female rats. Forty female 2 months old Sprague Dawley rats (200 +/- 5 g) were randomly divided into 4 equal groups including group 1 as control, group 2 ...
Orzech Kathryn M KM Brown University, Providence, RI 02912, USA. - - 2013
Many factors interact to create barriers to dietary and exercise plan adherence among medically underserved patients with chronic disease, but aspects related to culture and ethnicity are underexamined in the literature. Using both qualitative (n = 71) and quantitative (n = 297) data collected in a 4-year, multimethod study among ...
Albert Hanne B - - 2012
Prospective single-blind, randomized, clinical, controlled trial. To evaluate the efficacy of active conservative treatment and to compare 2 active conservative treatment programs for patients with severe sciatica. Reviews have demonstrated little or no efficacy for passive conservative treatment modalities in patients suffering from sciatica. The results for surgery are conflicting. ...
Chang Yu-Kai - - 2012
PURPOSE:: We investigated the effects of an acute bout of resistance exercise on the planning component of executive function in late-middle-aged adults. METHOD:: With a within-subjects design, thirty community-dwelling adults (mean age = 57.20±2.93 yrs, 16 female) experienced both resistance exercise and control treatment conditions. The exercise condition involved two ...
Vukotich George - - 2012
In a joint military/civilian exercise conducted in June 2010, military National Guard medical and decontamination response efforts proved to be paramount in supporting hospital resources to sustain an adequate response during a simulated terrorist event. Traditionally, hospitals include local responders in their disaster preparedness but overlook other available state and ...
Smith Thomas J - - 2012
The need to develop and exercise a viable plan to cope with a critical incident has become mandatory, according to the author, who in this article presents a prescription for such a plan that includes beginning with a policy, preparing by training, exercising your plan to discover strengths and weaknesses, ...
Lee Hyo - - 2011
There are few studies investigating psychosocial mechanisms in Korean Americans' exercise behavior. The present study tested the usefulness of the theory of planned behavior in predicting Korean American's exercise behavior and whether the descriptive norm (i.e., perceptions of what others do) improved the predictive validity of the theory of planned ...
Burkert Silke - - 2011
In this study, we investigated the role of dyadic planning for health-behavior change. Dyadic planning refers to planning health-behavior change together with a partner. We assumed that dyadic planning would affect the implementation of regular pelvic-floor exercise (PFE), with other indicators of social exchange and self-regulation strategies serving as mediators. ...
Smith Philip W - - 2011
To assess qualitative aspects of long-term care facility (LTCF) preparedness programs and to test the utility of a LTCF pandemic preparedness Tool. A Tool was developed and weighted with input from various subject matter experts. LTCFs. LTCF preparedness programs. A 61-question Tool was used in facilities. Prevalence of pandemic preparedness ...
Saunders Michael John - - 2011
Postexercise carbohydrate intake has been shown to augment recovery from heavy aerobic exercise. The effects of carbohydrate and protein coingestion (CHO + Pro) have been investigated more recently, including the potential influences of chocolate milk. Some studies report that CHO + Pro beverages (including chocolate milk) enhance subsequent exercise performance ...
Mishra Nalini - - 2011
With a significant number of women belonging to the status of menopause and beyond, it is imperative to plan a comprehensive health program for them, including lifestyle modifications. Exercise is an integral part of the strategy. The benefits are many, most important being maintenance of muscle mass and thereby the ...
Evers Andrea - - 2011
Objective: This study investigated the role of coping plans and the use of selection, optimisation and compensation (SOC) strategies within an experimental evaluation of a 26-week physical exercise intervention. Methods: Older women (N = 86, M (age) = 73.7 years) were randomly assigned to a telephone-assisted or a self-administered coping planning intervention after 6 ...
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