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Articoli di riviste sul tema "Onset of blood lactate accumulation"

Autore: Grafiati

Pubblicato: 4 giugno 2021

Ultima modifica: 13 febbraio 2022

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1

MURAKAMI, Hisatoshi, Munehiro SHINDO, Hiroaki TANAKA, et al. "Onset of Blood Lactate Accumulation and Serum Lipid and Apolipoprotein Profiles." Journal of Japan Atherosclerosis Society 16, no. 8 (1989): 1211–16. http://dx.doi.org/10.5551/jat1973.16.8_1211.

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2

Grassi, Bruno, Valentina Quaresima, Claudio Marconi, Marco Ferrari, and Paolo Cerretelli. "Blood lactate accumulation and muscle deoxygenation during incremental exercise." Journal of Applied Physiology 87, no. 1 (1999): 348–55. http://dx.doi.org/10.1152/jappl.1999.87.1.348.

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Near-infrared spectroscopy (NIRS) could allow insights into controversial issues related to blood lactate concentration ([La]b) increases at submaximal workloads (w˙). We combined, on five well-trained subjects [mountain climbers; peak O2 consumption (V˙o 2peak), 51.0 ± 4.2 (SD) ml ⋅ kg−1 ⋅ min−1] performing incremental exercise on a cycle ergometer (30 W added every 4 min up to voluntary exhaustion), measurements of pulmonary gas exchange and earlobe [La]b with determinations of concentration changes of oxygenated Hb (Δ[O2Hb]) and deoxygenated Hb (Δ[HHb]) in the vastus lateralis muscle, by co

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3

Quirion, A., G. R. Brisson, L. Laurencelle, et al. "Lactate threshold and onset of blood lactate accumulation during incremental exercise after dietary modifications." European Journal of Applied Physiology and Occupational Physiology 57, no. 2 (1988): 192–97. http://dx.doi.org/10.1007/bf00640662.

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4

Chwalbinska-Moneta, J., R. A. Robergs, D. L. Costill, and W. J. Fink. "Threshold for muscle lactate accumulation during progressive exercise." Journal of Applied Physiology 66, no. 6 (1989): 2710–16. http://dx.doi.org/10.1152/jappl.1989.66.6.2710.

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The purpose of this study was to investigate the relationship between muscle and blood lactate concentrations during progressive exercise. Seven endurance-trained male college students performed three incremental bicycle ergometer exercise tests. The first two tests (tests I and II) were identical and consisted of 3-min stage durations with 2-min rest intervals and increased by 50-W increments until exhaustion. During these tests, blood was sampled from a hyperemized earlobe for lactate and pH measurement (and from an antecubital vein during test I), and the exercise intensities corresponding

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Acevedo, E. O., R. R. Kraemer, R. W. Haltom, J. L. Tryniecki, K. Powell, and P. Gaydos. "PERCEPTUAL RESPONSES AT RUNNING VELOCITIES PROXIMAL TO THE ONSET OF BLOOD LACTATE ACCUMULATION." Medicine & Science in Sports & Exercise 30, Supplement (1998): 6. http://dx.doi.org/10.1097/00005768-199805001-00034.

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6

Farrell, John W., David J. Lantis, Carl J. Ade, Greg S. Cantrell, and Rebecca D. Larson. "Aerobic Exercise Supplemented With Muscular Endurance Training Improves Onset of Blood Lactate Accumulation." Journal of Strength and Conditioning Research 32, no. 5 (2018): 1376–82. http://dx.doi.org/10.1519/jsc.0000000000001981.

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7

YOSHIDA, Takayoshi. "Relationship of lactate threshold and onset of blood lactate accumulation as determinants of endurance ability in untrained females." Annals of physiological anthropology 5, no. 4 (1986): 205–9. http://dx.doi.org/10.2114/ahs1983.5.205.

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8

DENADAI, BENEDITO SÉRGIO, EURIPEDES BARSANULFO GONÇALVES GOMIDE, and CAMILA COELHO GRECO. "THE RELATIONSHIP BETWEEN ONSET OF BLOOD LACTATE ACCUMULATION,CRITICAL VELOCITY, AND MAXIMAL LACTATE STEADY STATE IN SOCCER PLAYERS." Journal of Strength and Conditioning Research 19, no. 2 (2005): 364–68. http://dx.doi.org/10.1519/00124278-200505000-00021.

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Denadai, Benedito Sérgio, Euripedes Barsanulfo Gonçalves Gomide, and Camila Coelho Greco. "The Relationship Between Onset of Blood Lactate Accumulation, Critical Velocity, and Maximal Lactate Steady State in Soccer Players." Journal of Strength and Conditioning Research 19, no. 2 (2005): 364. http://dx.doi.org/10.1519/1533-4287(2005)19[364:trboob]2.0.co;2.

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10

Bentley, D. J., L. R. McNaughton, and A. M. Batterham. "Prolonged stage duration during incremental cycle exercise: effects on the lactate threshold and onset of blood lactate accumulation." European Journal of Applied Physiology 85, no. 3-4 (2001): 351–57. http://dx.doi.org/10.1007/s004210100452.

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YOSHIDA, Takayoshi. "A comparison of lactate threshold and onset of blood lactate accumulation during two kinds of duration of incremental exercises." Annals of physiological anthropology 5, no. 4 (1986): 211–16. http://dx.doi.org/10.2114/ahs1983.5.211.

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12

Sakamaki-Sunaga, M., J. P. Loenneke, R. S. Thiebaud, and T. Abe. "Onset of blood lactate accumulation and peak oxygen uptake during graded walking test combined with and without restricted leg blood flow." Comparative Exercise Physiology 8, no. 2 (2012): 117–22. http://dx.doi.org/10.3920/cep12007.

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The purpose of this study was to compare the peak oxygen uptake (VO2peak) and lactate threshold / onset of blood lactate accumulation (LT/OBLA) during an incremental exercise test with and without blood flow restriction (BFR). Six male subjects performed a graded walking test on a treadmill with and without BFR in random order, and oxygen uptake (VO2), minute ventilation (VE), and blood lactate concentration were measured during each test. During the BFR test, the subjects wore pressure cuff belts on the most proximal portion of each thigh. At a given workload (e.g. during walking at 100 m/min

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Farrell, S. W., and J. L. Ivy. "Lactate acidosis and the increase in VE/VO2 during incremental exercise." Journal of Applied Physiology 62, no. 4 (1987): 1551–55. http://dx.doi.org/10.1152/jappl.1987.62.4.1551.

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The purpose of this investigation was to determine whether the onset of lactate acidosis is responsible for the increase in ventilatory equivalent (VE/VO2) during exercise of increasing intensity. Eight male subjects performed maximal incremental exercise tests on a cycle ergometer on two separate occasions. For the control (C) treatment, the initial work rates consisted of 4 min of unloaded pedaling (60 rpm) and 1 min of pedaling at a work rate of 30 W. Thereafter, the work rate was increased each minute by 22 W until volitional fatigue. Venous blood samples were taken before the onset of exe

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Abe, Daijiro, Yasushi Sakaguchi, Hirotsugu Tsuchimochi, et al. "Assessment of Long-distance Running Performance in Elite Male Runners Using Onset of Blood Lactate Accumulation." APPLIED HUMAN SCIENCE Journal of Physiological Anthropology 18, no. 2 (1999): 25–29. http://dx.doi.org/10.2114/jpa.18.25.

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Wakayoshi, Kohji, Toshio Moritani, Yoshiteru Mutoh, and Mitsumasa Miyashita. "Electromyographic evidence of selective muscle fatigue during swimming above onset of blood lactate accumulation (OBLA) speeds." Journal of Biomechanics 25, no. 7 (1992): 757. http://dx.doi.org/10.1016/0021-9290(92)90457-c.

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Clingeleffer, Amanda, Lars R. Mc Naughton, and Bill Davoren. "The use of critical power as a determinant for establishing the onset of blood lactate accumulation." European Journal of Applied Physiology and Occupational Physiology 68, no. 2 (1994): 182–87. http://dx.doi.org/10.1007/bf00244033.

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17

Russ, Aaron E., Albino G. Schifino, and Chee-Hoi Leong. "Effect of lactate supplementation on V̇O_2peak and onset of blood lactate accumulation: A double-blind, placebo-controlled trial." Acta Gymnica 49, no. 2 (2019): 51–57. http://dx.doi.org/10.5507/ag.2019.004.

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Silva, Thays C., Felipe J. Aidar, Aristela de Freitas Zanona, et al. "The Acute Effect of Hyperoxia on Onset of Blood Lactate Accumulation (OBLA) and Performance in Female Runners during the Maximal Treadmill Test." International Journal of Environmental Research and Public Health 18, no. 9 (2021): 4546. http://dx.doi.org/10.3390/ijerph18094546.

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The objective of this study was to analyze the acute effect of hyperoxia during the maximal treadmill test (MTT) of runners. Participants included 10 female street runners who performed the MTT under two different conditions: hyperoxia (HYPX), inhaling oxygen (60% O2) every 3 min; and normoxia (NORM), without additional oxygen inhalation. Both groups performed the MTT with increases in the slope of the run every 3 min until voluntary exhaustion. The variables of lactate concentration, the onset of blood lactate accumulation (OBLA), peripheral oxygen saturation (SpO2), heart rate (HR), and Borg

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Wolfe, L. A., R. M. Walker, A. Bonen, and M. J. McGrath. "Effects of pregnancy and chronic exercise on respiratory responses to graded exercise." Journal of Applied Physiology 76, no. 5 (1994): 1928–36. http://dx.doi.org/10.1152/jappl.1994.76.5.1928.

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Effects of cycle ergometer conditioning (heart rate 143 +/- 2 beats/min, 25 min/session, 3 sessions/wk) during the second and third trimesters of pregnancy were studied in 18 healthy previously sedentary women. A nonexercising control group (n = 9) was also studied. Graded exercise tests were conducted for both groups at approximately 17, 27, and 37 wk of gestation and at 20 wk postpartum. Both groups exhibited augmented ventilatory responses to exercise throughout pregnancy. Significant aerobic conditioning effects observed in the exercised group between entry and third trimester of pregnancy

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Ramos Jiménez, Arnulfo, Abraham Wall Medrano, Marco Antonio Hernández Lepe, Gregorio Chávez Treviño, Jaime Guereca Arvizuo, and Rosa Patricia Hernández Torres. "Borg’s category ratio-scale (CR-10) is useful to predict the onset of blood lactate accumulation (OBLA) in young Mexicans adults, regardless their body mass." CIENCIA ergo sum 26, no. 1 (2019): 1–14. http://dx.doi.org/10.30878/ces.v26n1a7.

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Aim: To evaluate the predictive value of Borg’s category ratio-scale (CR-10; 1-10) toward the onset of blood lactate accumulation (OBLA). Methods: 91 young Mexicans performed three non-consecutive sub-maximal exercise tests. Heart rate (HR), blood lactate and oxygen uptake were recorded at each CR-10 rating. Regression equations, reliable HR and CR-10 cut-off points of OBLA were then calculated. Results: HR (86 beats/min) and CR-10 (4.5) predicted OBLA with the same certainty, regardless the subject’s body mass. CR-10, HR and oxygen uptake, independently explained more than 60% of the associat

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Preobrazenski, Nicholas, Jacob T. Bonafiglia, Matthew W. Nelms, et al. "Does blood lactate predict the chronic adaptive response to training: A comparison of traditional and talk test prescription methods." Applied Physiology, Nutrition, and Metabolism 44, no. 2 (2019): 179–86. http://dx.doi.org/10.1139/apnm-2018-0343.

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The purpose of this study was to test the hypotheses (i) that interindividual variability in acute blood lactate responses during exercise at 65% of peak work rate (WRpeak; relative WRpeak protocol (REL)) will predict variability in the chronic responses to exercise training and (ii) that exercising at an intensity that causes uncomfortable speech production (negative talk test (TT) stage (NEG)) elicits high acute blood lactate responses and large adaptations to training. Twenty-eight participants completed 4 weeks of exercise training consisting of REL (n = 14) or NEG (TT, n = 14). Fifteen ad

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Lan, Ching, Ssu-Yuan Chen, Jin-Shin Lai, and May-Kuen Wong. "Heart Rate Responses and Oxygen Consumption during Tai Chi Chuan Practice." American Journal of Chinese Medicine 29, no. 03n04 (2001): 403–10. http://dx.doi.org/10.1142/s0192415x01000423.

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Tai Chi Chuan (TCC) is a popular Chinese conditioning exercise, however, its exercise intensity remains controversial. The objective of this study was to determine the exercise intensity of Yang TCC by measuring heart rate (HR) responses and oxygen consumption [Formula: see text] during practice. Fifteen men aged 39.9 ± 9.5 yrs (range 26–56 yrs) participated in this study. Subjects had practiced classical Yang TCC for 5.8 ± 2.4 years. HR responses and [Formula: see text] were measured during practice of TCC by using a K4 telemetry system. Blood lactate was measured before and immediately after

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Szczepan, Stefan, Krystyna Zaton, and Jacek Borkowski. "The effects of concurrent visual feedback on the control of swimming intensities above the onset of blood lactate accumulation." Human Movement 19, no. 4 (2018): 49–55. http://dx.doi.org/10.5114/hm.2018.77324.

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Karlsson, Jan. "Onset of blood lactate accumulation exercise capacity, skeletal muscle fibers and metabolism before and after coronary artery bypass grafting." American Journal of Cardiology 62, no. 8 (1988): 108E—114E. http://dx.doi.org/10.1016/s0002-9149(88)80023-7.

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VUKOVICH, MATTHEW D., та GERI D. DREIFORT. "Effect of β-Hydroxy β-Methylbutyrate on the Onset of Blood Lactate Accumulation and Vo2peak in Endurance-Trained Cyclists". Journal of Strength and Conditioning Research 15, № 4 (2001): 491–97. http://dx.doi.org/10.1519/00124278-200111000-00015.

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Erdogan, A., C. Cetin, H. Goksu, R. Guner, and M. L. Baydar. "Non-invasive detection of the anaerobic threshold by a neural network model of the heart rate—work rate relationship." Proceedings of the Institution of Mechanical Engineers, Part P: Journal of Sports Engineering and Technology 223, no. 3 (2009): 109–15. http://dx.doi.org/10.1243/17543371jset18.

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The heart rates (HRs) indicating the anaerobic threshold, which corresponds to a fixed blood lactate concentration of 4mmol/l (heart rate at the onset of blood lactate accumulation (HR-OBLA)); are predicted on the basis of the heart rate—work rate relationship during exercise performance. The predictor is a multi-layer perceptron (MLP). For training and testing, 225 male soccer players (mean age, 21.6±4.5 years) performed an incremental running test on a treadmill with 3-min runs and 30-s blood sampling sessions for lactate assessment. In addition to the treadmill test data, the ages, masses,

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Jakeman, John, Simon Adamson, and John Babraj. "Extremely short duration high-intensity training substantially improves endurance performance in triathletes." Applied Physiology, Nutrition, and Metabolism 37, no. 5 (2012): 976–81. http://dx.doi.org/10.1139/h2012-083.

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High-intensity training (HIT) involving 30-s sprints is an effective training regimen to improve aerobic performance. We tested whether 6-s HITs can improve aerobic performance in triathletes. Six subelite triathletes (age, 40 ± 9 years; weight, 86 ± 11 kg; body mass index, 26 ± 3 kg·m–2) took part in cycle HIT and 6 endurance-trained subelite athletes (age, 36 ± 9 years; weight, 82 ± 11 kg; BMI, 26 ± 3 kg·m–2) maintained their normal training routine. Before and after 2 weeks of HIT, involving 10 × 6-s sprints or normal activity, participants performed a self-paced 10-km time trial and a time

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Del Río Valdivia, Jose E., Ciria Margarita Salazar, Julio Cuevas Romo, et al. "Diferencias en el OBLA en jugadoras de fútbol en relación a su posición en el campo de juego (Differences in OBLA in football players based on their field position)." Retos, no. 32 (December 28, 2016): 58–61. http://dx.doi.org/10.47197/retos.v0i32.48937.

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La posición en el campo de juego en el fútbol, no obedece solo a un interés personal, sino que podría depender de variables fisiológicas individuales. El presente estudio determina el OBLA en las diferentes posiciones. La población del estudio fue integrada por 16 jugadoras universitarias de la modalidad soccer (4 por cada posición) evaluadas en una banda sin fin, con una prueba de velocidades crecientes. En cada velocidad utilizada se midió la concentración de lactato sanguíneo con un analizador portátil Accuntrend Lactate Plus. Para el análisis de los datos se propuso una fórmula matemática

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Bouissou, P., P. Y. Estrade, F. Goubel, C. Y. Guezennec, and B. Serrurier. "Surface EMG power spectrum and intramuscular pH in human vastus lateralis muscle during dynamic exercise." Journal of Applied Physiology 67, no. 3 (1989): 1245–49. http://dx.doi.org/10.1152/jappl.1989.67.3.1245.

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The relationship between intramuscular pH and the frequency components of the surface electromyographic (EMG) power spectrum from the vastus lateralis muscle was studied in eight healthy male subjects during brief dynamic exercise. The studies were carried out in placebo control and metabolic alkalosis induced by oral administration of NaHCO3. At the onset of exercise, blood pH was 0.08 units higher in alkalosis compared with placebo. Muscle lactate accumulation during exercise was higher in alkalosis (32 +/- 5 mmol/kg wet wt) than in placebo (17 +/- 4 mmol/kg wet wt), but no difference in int

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Farrell III, John W., David J. Lantis, Carl J. Ade, Debra A. Bemben, and Rebecca D. Larson. "Metabolic Response to Four Weeks of Muscular Endurance Resistance Training." International Journal of Kinesiology and Sports Science 5, no. 4 (2017): 10. http://dx.doi.org/10.7575/aiac.ijkss.v.5n.4p.10.

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Background: Previous investigations have shown that muscular endurance resistance training (MERT) is conducive in improving the onset of blood lactate accumulation (OBLA). However, the metabolic response and time course for adaption is still unclear. Objective: The aims of the current study were to evaluate and track the metabolic response to an individual session of MERT as well as to assess performance adaptations of supplementing an aerobic exercise training program with four weeks of MERT. Methods: Seventeen aerobically active men were randomly assigned to either the experimental (EX) or c

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Akubat, Ibrahim, Steve Barrett, and Grant Abt. "Integrating the Internal and External Training Loads in Soccer." International Journal of Sports Physiology and Performance 9, no. 3 (2014): 457–62. http://dx.doi.org/10.1123/ijspp.2012-0347.

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Purpose:This study aimed to assess the relationships of fitness in soccer players with a novel integration of internal and external training load (TL).Design:Ten amateur soccer players performed a lactate threshold (LT) test followed by a soccer simulation (Ball-Sport Endurance and Sprint Test [BEAST90mod]).Methods:The results from the LT test were used to determine velocity at lactate threshold (vLT), velocity at onset of blood lactate accumulation (vOBLA), maximal oxygen uptake (VO2max), and the heart rate–blood lactate profile for calculation of internal TL (individualized training impulse,

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VUKOVICH, MATTHEW D., та GERI D. DREIFORT. "Effect of β-Hydroxy β-Methylbutyrate on the Onset of Blood Lactate Accumulation and &Vdo;;o2peak in Endurance-Trained Cyclists". Journal of Strength and Conditioning Research 15, № 4 (2001): 491. http://dx.doi.org/10.1519/1533-4287(2001)015<0491:eohmot>2.0.co;2.

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Christensen, Peter M., Nikolai Baastrup Nordsborg, Lars Nybo, et al. "Thigh oxygen uptake at the onset of intense exercise is not affected by a reduction in oxygen delivery caused by hypoxia." American Journal of Physiology-Regulatory, Integrative and Comparative Physiology 303, no. 8 (2012): R843—R849. http://dx.doi.org/10.1152/ajpregu.00201.2012.

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In response to hypoxic breathing most studies report slower pulmonary oxygen uptake (V̇o2) kinetics at the onset of exercise, but it is not known if this relates to an actual slowing of the V̇o2 in the active muscles. The aim of the present study was to evaluate whether thigh V̇o2 is slowed at the onset of intense exercise during acute exposure to hypoxia. Six healthy male subjects (25.8 ± 1.4 yr, 79.8 ± 4.0 kg, means ± SE) performed intense (100 ± 6 watts) two-legged knee-extensor exercise for 2 min in normoxia (NOR) and hypoxia [fractional inspired oxygen concentration (FiO2) = 0.13; HYP]. T

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Barros, Cristiano Lino Monteiro de, Thiago Teixeira Mendes, Diogo Antônio Soares Pacheco, and Emerson Silami Garcia. "Efeitos do calor no OBLA: comparação entre ambiente quente e temperado." Motriz: Revista de Educação Física 19, no. 2 (2013): 441–49. http://dx.doi.org/10.1590/s1980-65742013000200021.

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O OBLA (onset of blood lactate accumulation) é um método utilizado para estimar o limiar de lactato (LL). Entretanto, ainda não está claro o efeito da temperatura ambiente sobre o OBLA. O objetivo do presente estudo foi comparar o OBLA em ambiente quente (40ºC) e temperado (22ºC). Nove homens (idade: 23,9±2,4 anos; massa corporal: 75,9±7,3 kg e VO2máx: 47,8±4,9 mL•kg-1•min-1) realizaram teste progressivo em cicloergômetro para determinação da potência máxima (Wmáx) e do OBLA nos dois ambientes. A Wmáx (195±25W vs 225±28W) e a potência no OBLA (153±30W vs 165±32W) foram menores no ambiente quen

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Stellingwerff, Trent, Lee Glazier, Matthew J. Watt, Paul J. LeBlanc, George J. F. Heigenhauser, and Lawrence L. Spriet. "Effects of hyperoxia on skeletal muscle carbohydrate metabolism during transient and steady-state exercise." Journal of Applied Physiology 98, no. 1 (2005): 250–56. http://dx.doi.org/10.1152/japplphysiol.00897.2004.

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This study compared the effects of inspiring either a hyperoxic (60% O2) or normoxic gas (21% O2) while cycling at 70% peak O2 uptake on 1) the ATP derived from substrate phosphorylation during the initial minute of exercise, as estimated from phosphocreatine degradation and lactate accumulation, and 2) the reliance on carbohydrate utilization and oxidation during steady-state cycling, as estimated from net muscle glycogen use and the activity of pyruvate dehydrogenase (PDH) in the active form (PDHa), respectively. We hypothesized that 60% O2 would decrease substrate phosphorylation at the ons

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Santos-Concejero, Jordan, Cristina Granados, Iraia Bidaurrazaga-Letona, Jon Zabala-Lili, Jon Irazusta, and Susana María Gil. "Comienzo de la acumulación de lactato sanguíneo como predictor del rendimiento en atletas de élite (Onset of blood lactate accumulation as a predictor of performance in top athletes)." Retos, no. 23 (March 7, 2015): 67–69. http://dx.doi.org/10.47197/retos.v0i23.34570.

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El objetivo principal de este estudio fue investigar si el comienzo de la acumulación de lactato en sangre (VOBLA) es un buen predictor del rendimiento de mediofondo y fondo en atletas entrenados. Veintidós corredores tomaron parte en este estudio. Todos completaron un test máximo incremental en tapiz rodante para determinar los parámetros fisiológicos máximos así como la VOBLA. Se analizaron las relaciones entre la VOBLA y el ritmo de carrera de 10 km (V10K) y 3 km (V3K). La VOBLA fue de 17.7 ± 1.2 km·h-1 y las V10K y V3K fueron 21.1 ± 0.7 km·h-1 y 19.0 ± 0.8 km·h-1, respectivamente. Se encon

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Mohorič, Uroš, Marko Šibila, and Boro Štrumbelj. "Positional differences in some physiological parameters obtained by the incremental field endurance test among elite handball players." Kinesiology 53, no. 1 (2021): 3–11. http://dx.doi.org/10.26582/k.53.1.1.

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The purpose of the study was to assess assumed differences in some physiological parameters, obtained by an incremental intermittent running field test 30–15IFT, among elite handball players to get an insight into the specifics of aerobic capacity profiles of players in different playing positions. Twenty-four elite male handball players were tested using the Cosmed K4 portable telemetry system. The following parameters were analysed: running velocity, heart rate, oxygen uptake, relative oxygen uptake, pulmonary ventilation breath-by-breath, at the three points—lactate threshold (LT), onset of

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Ferretti, G., M. Gussoni, P. E. Di Prampero, and P. Cerretelli. "Effects of exercise on maximal instantaneous muscular power of humans." Journal of Applied Physiology 62, no. 6 (1987): 2288–94. http://dx.doi.org/10.1152/jappl.1987.62.6.2288.

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The maximal instantaneous anaerobic power (w), as determined during a high jump off both feet on a force platform, was measured on eight subjects starting from a resting base line; a base line of steady-state cycloergometric exercise requiring 30, 50, and 70% of individual maximum O2 consumption (VO2max); and a base line of maximal and supramaximal exercise (100 and 120% of VO2max). In addition, w was also measured during the VO2 transients from rest to each of the above work loads. Blood lactate concentration ([Lab]) was determined before and 8 min after the end of each priming load. After th

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Kyongtae Kim. "Influence of Aerobic and Resistance Exercise on Body Composition, Energy Intakes, and Appetite Regulating Hormones in the Onset of Blood Lactate Accumulation." Korean Journal of Sport Science 23, no. 4 (2012): 753–63. http://dx.doi.org/10.24985/kjss.2012.23.4.753.

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40

Jordan, Thomas, Judith Lukaszuk, Mark Misic, and Josephine Umoren. "Effect of beta-alanine supplementation on the onset of blood lactate accumulation (OBLA) during treadmill running: Pre/post 2 treatment experimental design." Journal of the International Society of Sports Nutrition 7, no. 1 (2010): 20. http://dx.doi.org/10.1186/1550-2783-7-20.

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41

Raymer, Graydon H., Greg D. Marsh, John M. Kowalchuk, and R. Terry Thompson. "Metabolic effects of induced alkalosis during progressive forearm exercise to fatigue." Journal of Applied Physiology 96, no. 6 (2004): 2050–56. http://dx.doi.org/10.1152/japplphysiol.01261.2003.

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Abstract (sommario):

Metabolic alkalosis induced by sodium bicarbonate (NaHCO3) ingestion has been shown to enhance performance during brief high-intensity exercise. The mechanisms associated with this increase in performance may include increased muscle phosphocreatine (PCr) breakdown, muscle glycogen utilization, and plasma lactate (Lac-pl) accumulation. Together, these changes would imply a shift toward a greater contribution of anaerobic energy production, but this statement has been subject to debate. In the present study, subjects ( n = 6) performed a progressive wrist flexion exercise to volitional fatigue

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42

Pedlar, Charles R., Gregory P. Whyte, Richard Burden, Brian Moore, Gill Horgan, and Noel Pollock. "A Case Study of an Iron-Deficient Female Olympic 1500-m Runner." International Journal of Sports Physiology and Performance 8, no. 6 (2013): 695–98. http://dx.doi.org/10.1123/ijspp.8.6.695.

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This case study examines the impact of low serum ferritin (sFe) on physiological assessment measures and performance in a young female 1500-m runner undertaking approximately 95–130 km/wk training. The study spans 4 race seasons and an Olympic Games. During this period, 25 venous blood samples were analyzed for sFe and hemoglobin (Hb); running economy, VO2max, and lactate threshold were measured on 6 occasions separated by 8–10 mo. Training was carefully monitored including 65 monitored treadmill training runs (targeting an intensity associated with the onset of blood lactate accumulation) usi

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43

Mujika, Iñigo. "Olympic Preparation of a World-Class Female Triathlete." International Journal of Sports Physiology and Performance 9, no. 4 (2014): 727–31. http://dx.doi.org/10.1123/ijspp.2013-0245.

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Abstract (sommario):

Detailed accounts of the training programs followed by today’s elite triathletes are lacking in the sport-science literature. This study reports on the training program of a world-class female triathlete preparing to compete in the London 2012 Olympic Games. Over 50 wk, she performed 796 sessions (303 swim, 194 bike, 254 run, 45 strength training), ie, 16 ± 4 sessions/wk (mean ± SD). Swim, bike, and run training volumes were, respectively, 1230 km (25 ± 8 km/wk), 427 h (9 ± 3 h/wk), and 250 h (5 ± 2 h/wk). Training tasks were categorized and prescribed based on heart-rate values and/or speeds

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Chmura, Jan, and Krystyna Nazar. "Parallel changes in the onset of blood lactate accumulation (OBLA) and threshold of psychomotor performance deterioration during incremental exercise after training in athletes." International Journal of Psychophysiology 75, no. 3 (2010): 287–90. http://dx.doi.org/10.1016/j.ijpsycho.2009.12.011.

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45

Mujika, Iñigo. "The Cycling Physiology of Miguel Indurain 14 Years After Retirement." International Journal of Sports Physiology and Performance 7, no. 4 (2012): 397–400. http://dx.doi.org/10.1123/ijspp.7.4.397.

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Abstract (sommario):

Age-related fitness declines in athletes can be due to both aging and detraining. Very little is known about the physiological and performance decline of professional cyclists after retirement from competition. To gain some insight into the aging and detraining process of elite cyclists, 5-time Tour de France winner and Olympic Champion Miguel Indurain performed a progressive cycle-ergometer test to exhaustion 14 y after retirement from professional cycling (age 46 y, body mass 92.2 kg). His maximal values were oxygen uptake 5.29 L/min (57.4 mL · kg−1 · min−1), aerobic power output 450 W (4.88

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46

Kubiak, Grzegorz M., Wojciech Jacheć, Celina Wojciechowska, et al. "Handheld Capillary Blood Lactate Analyzer as an Accessible and Cost-Effective Prognostic Tool for the Assessment of Death and Heart Failure Occurrence during Long-Term Follow-Up." Disease Markers 2016 (2016): 1–7. http://dx.doi.org/10.1155/2016/5965782.

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Abstract (sommario):

Impact of tissue lactate accumulation on prognosis after acute myocardial infarction (AMI) is biased. The study aimed to assess the prognostic role of lactate concentration (LC) in patients with AMI during one year of follow-up. 145 consecutive patients admitted due to AMI were enrolled. The data on the frequency of endpoint occurrence (defined as I, death; II, heart failure (HF); and III, recurrent myocardial infarction (re-MI)) were collected. The patients were divided into group A (LC below the cut-off value) and group B (LC above the cut-off value) for the endpoints according to receiver o

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47

Silva, Adelino Sanchez Ramos da, Flávia Nitolo Corrêa dos Santos, Vanessa Santhiago, and Claudio Alexandre Gobatto. "Comparação entre métodos invasivos e não invasivo de determinação da capacidade aeróbia em futebolistas profissionais." Revista Brasileira de Medicina do Esporte 11, no. 4 (2005): 233–37. http://dx.doi.org/10.1590/s1517-86922005000400006.

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Abstract (sommario):

O Limiar Anaeróbio (Lan) pode ser determinado por protocolos que utilizam concentrações fixas de lactato sanguíneo como o OBLA (Onset of Blood Lactate Accumulation) e os que utilizam procedimentos mais individualizados, como o Lactato Mínimo (Lacmin). Independente do método, a mensuração da capacidade aeróbia através do Lan nesses casos exige a utilização de equipamentos sofisticados, além do elevado custo por atleta, o que torna sua aplicação limitada. Como alternativa, um dos testes não invasivos mais empregados no meio esportivo é o de 12 minutos proposto por Cooper. O objetivo principal do

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48

Kowalchuk, John M., Shelly A. Smith, Brad S. Weening, Greg D. Marsh, and Donald H. Paterson. "Forearm muscle metabolism studied using 31P-MRS during progressive exercise to fatigue after Acz administration." Journal of Applied Physiology 89, no. 1 (2000): 200–209. http://dx.doi.org/10.1152/jappl.2000.89.1.200.

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Abstract (sommario):

The effects of acetazolamide (Acz)-induced carbonic anhydrase inhibition (CAI) on muscle intracellular thresholds (T) for intracellular pH (pHi) and inorganic phosphate-to-phosphate creatine ratio (Pi/PCr) and the plasma lactate (La−) threshold were examined in nine adult male subjects performing forearm wrist flexion exercise to fatigue. Exercise consisted of raising and lowering (1-s contraction, 1-s relaxation) a cylinder whose volume increased at a rate of 200 ml/min. The protocol was performed during control (Con) and after 45 min of CAI with Acz (10 mg/kg body wt iv). TpHi and TPi /PCr,

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49

Clansey, Adam C., Mark J. Lake, Eric S. Wallace, Tom Feehally, and Michael Hanlon. "Can Trained Runners Effectively Attenuate Impact Acceleration During Repeated High-Intensity Running Bouts?" Journal of Applied Biomechanics 32, no. 3 (2016): 261–68. http://dx.doi.org/10.1123/jab.2015-0125.

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Abstract (sommario):

The purpose of this study was to investigate the effects of prolonged high-intensity running on impact accelerations in trained runners. Thirteen male distance runners completed two 20-minute treadmill runs at speeds corresponding to 95% of onset of blood lactate accumulation. Leg and head accelerations were collected for 20 s every fourth minute. Rating of perceived exertion (RPE) scores were recorded during the third and last minute of each run. RPE responses increased (P < .001) from the start (11.8 ± 0.9, moderate intensity) of the first run to the end (17.7 ± 1.5, very hard) of the sec

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50

Wolfe, Larry A., and Michelle F. Mottola. "Aerobic Exercise in Pregnancy: An Update." Canadian Journal of Applied Physiology 18, no. 2 (1993): 119–47. http://dx.doi.org/10.1139/h93-011.

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Abstract (sommario):

The endocrine effects of pregnancy cause striking changes in maternal metabolism, cardiovascular regulation, acid-base balance, and thermoregulation at rest and during standard submaximal exercise. The apparent purpose of these changes is to accommodate fetal needs in addition to those of the exercising woman. A significant body of evidence supports the hypothesis that healthy women can perform acute exercise of moderate intensity and duration without jeopardizing fetal well-being. Compiled studies also suggest that maximal oxygen uptake ([Formula: see text], L∙min−1) and the work rate at the

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