Do maximal aerobic power and blood lactate concentration affect Specific Judo Fitness Test performance in female judo athletes?

Output (Qsweat) and lactate concentration ( [L]sweat) in frontal sweat and blood lactate concentration ( [L]blood) were monitored in three male volunteers: one sedentary (S), one fit (F), and one very fit (VF). Measurements were made under three sweating conditions: 1) heat exposure to infrared radiation (IR) at rest for 25 min at 45 degrees C; 2) bicycle exercise at constant relative maximal aerobic power (87 +/- 2% MAP) for 25 min (Cst EX) at 23 degrees C; and 3) bicycle exercise at increasing work loads (from 60–95% MAP) in four or five successive 5-min steps (Incr EX) at 23 degrees C. Comparison of these data showed that under the above three conditions 1) Qsweat of S was lower than that of F and VF; and 2) changes in [L]sweat were different: in IR and Cst EX, [L]blood remained constant, and [L]sweat decreased with heat load duration similarly in the three subjects (the slopes of the two curves were not significantly different); at Incr Ex, [L]blood increased and [L]sweat remained constant in S, F, and VF (21.71 +/- 0.85, 16.75 +/- 0.99, 12.83 +/- 0.45 (SE) mM, respectively). It was suggested that the high [L]blood and increased adrenergic stimulation observed in Incr Ex could act on [L]sweat in relation to the physical fitness level.

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Effects of Honey (Apis mellifera and Apis cerana Species) Supplementation on Reducing Blood Lactate Concentration in Futsal Athletes

Polish Journal of Sport and Tourism ◽

10.2478/pjst-2019-0020 ◽

2019 ◽

Vol 26 (4) ◽

pp. 11-15

Author(s):

Kusnaedi Kusnaedi ◽

Adnyana I Ketut ◽

Tommy Apriantono ◽

Syahruddin Syahruddin ◽

Junaidi Junaidi ◽

...

Keyword(s):

Apis Mellifera ◽

Blood Lactate ◽

Test Performance ◽

Apis Cerana ◽

Lactate Concentration ◽

Blood Lactate Concentration ◽

Sprint Performance ◽

T Test ◽

Daily Consumption ◽

Main Effects

AbstractIntroduction. The purpose of this study was to examine whether 6-week daily consumption of honey from Apis mellifera and Apis cerana species would affect performance and reduce blood lactate in futsal athletes.Subjects and Methods. In this study, 30 male futsal athletes volunteered to be subjects. A group of 15 futsal athletes volunteered for random blind assignment to either an Apis mellifera honey (AM) group or an Apis cerana honey (AC) group. Each group completed tests pre- and post-supplementation for 20 m sprint test and agility t-test. Additionally, blood lactate was measured before and immediately after the tests.Results. Independent t-test revealed significant changes from before to after supplementation in the AC group (p=0.009) for lactate post. Conversely, independent t-test revealed no significant changes in the AM group (p=0.698) for lactate post. Regarding 20 m sprint performance, there were statistically significant differences for time (p=0.036) and group main effects (p=0.009). Specifically, independent t-test showed significant changes from before to after supplementation just in the AC group (p=0.018). For the t-test, independent t-test revealed significant changes from before to after supplementation in the AC group (p=0.013).Conclusions. We demonstrated that 1.14 g/kg of Apis cerana honey given once a day at breakfast for 6 weeks is more effective in reducing blood lactate concentration and enhancing agility t-test performance than 1.14 g/kg of Apis mellifera honey in futsal athletes.

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Metabolic and Cardiorespiratory Responses of Semiprofessional Football Players in Repeated Ajax Shuttle Tests and Curved Sprint Tests, and Their Relationship with Football Match Play

International Journal of Environmental Research and Public Health ◽

10.3390/ijerph17217745 ◽

2020 ◽

Vol 17 (21) ◽

pp. 7745

Author(s):

Tomasz Gabrys ◽

Arkadiusz Stanula ◽

Urszula Szmatlan-Gabrys ◽

Michal Garnys ◽

Luboš Charvát ◽

...

Keyword(s):

Blood Lactate ◽

Test Performance ◽

Pulmonary Ventilation ◽

Lactate Concentration ◽

Total Duration ◽

Blood Lactate Concentration ◽

Energy System ◽

Football Players ◽

Performance Decrement ◽

Physiological Variables

In this study, the Ajax Shuttle Test (AST) and the Curved Sprint Test (CST) were conducted on semiprofessional football players to evaluate (1) their test performance, (2) the extent of anaerobic glycolysis by measuring blood lactate, (3) performance decrement and onset of fatigue, and (4) the correlation between selected physiological variables and test performance. Thirty-two semiprofessional Polish football players participated in this study. Both AST and CST were conducted on an outdoor football ground and were conducted in two sets; each set had six repetitions. In the case of AST, the total duration for 6 repetitions of the exercise in Sets 1 and 2 were 90.63 ± 3.71 and 91.65 ± 4.24 s, respectively, whereas, in the case of CST, the respective values were 46.8 ± 0.56 and 47.2 ± 0.66 s. Peak blood lactate concentration [La] after Sets 1 and 2 of AST were 14.47 ± 3.77 and 15.00 ± 1.85 mmol/L, and in the case of CST, the values were 8.17 ± 1.32 and 9.78 ± 1.35 mmol/L, respectively. Performance decrement in AST was more than in CST, both after Set 1 (4.32 ± 1.43 and 3.31 ± 0.96 in AST and CST, respectively) and Set 2 (7.95 ± 3.24 and 3.71 ± 1.02 in AST and CST, respectively). Only in a few of the repetitions, pulmonary ventilation (VE) and oxygen uptake (VO2) were found to be significantly correlated with the performance of the volunteers in both AST and CST. Respiratory exchange ratio (RER) was significantly correlated with most of the repetitions of AST, but not with CST. The study concludes that (1) AST shows more dependence on the anaerobic glycolytic system than shorter repetitive sprints (as in CST), (2) there is more performance decrement and fatigue in AST than in CST, and (3) early decrease in performance and fatigue in the semiprofessional football players in AST and CST may be due to the insufficiency of their aerobic energy system.

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Effects of Higher Relative pH but Lower Blood Lactate Concentration on Wingate Test Performance

Medicine & Science in Sports & Exercise ◽

10.1249/01.mss.0000488123.62448.9e ◽

2016 ◽

Vol 48 ◽

pp. 1038

Author(s):

Minas Nalbandian ◽

Radak Zsolt ◽

Kimura Ryota ◽

Sasaki Nichika ◽

Masashi Nojima ◽

...

Keyword(s):

Blood Lactate ◽

Test Performance ◽

Lactate Concentration ◽

Blood Lactate Concentration ◽

Wingate Test ◽

Lower Blood

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Effects of L-carnitine Administration on Anaerobic Capacity and Blood Lactate Concentration in Elite Judo Athletes

The Journal of Korean Alliance of Martial Arts. ◽

10.35277/kama.2009.11.1.177 ◽

2009 ◽

Vol 11 (1) ◽

pp. 177-187

Author(s):

Yoonseouk Chun ◽

김종규 ◽

Seoungki Kang ◽

김성연 ◽

Keuneil Lee ◽

...

Keyword(s):

Blood Lactate ◽

Lactate Concentration ◽

Anaerobic Capacity ◽

Blood Lactate Concentration ◽

Judo Athletes

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The influence of execution speed on blood lactate concentration in strength training protocol in bench press exercise

Revista Brasileira de Fisiologia do Exercício ◽

10.33233/rbfe.v19i1.3990 ◽

2020 ◽

Vol 19 (1) ◽

pp. 32

Author(s):

Gustavo Taques Marczynski ◽

Luís Carlos Zattar Coelho ◽

Leonardo Emmanuel De Medeiros Lima ◽

Rodrigo Pereira Da Silva ◽

Dilmar Pinto Guedes Jr ◽

...

Keyword(s):

Strength Training ◽

Blood Lactate ◽

Bench Press ◽

Lactate Concentration ◽

Blood Lactate Concentration ◽

The Third ◽

Fast Speed ◽

Work Volume ◽

Execution Speed ◽

Training Protocol

The aim of this study was to analyze the influence of two velocities of execution relative to blood lactate concentration in strength training exercise until the momentary concentric failure. Fifteen men (29.1 ± 5.9 years), trained, participated in the experiment. The volunteers performed three bench press sessions, with an interval of 48 hours between them. At the first session, individuals determined loads through the 10-12 RMs test. In the following two sessions, three series with 90 seconds of interval were performed, in the second session slow execution speed (cadence 3030) and later in the third session fast speed (cadence 1010). For statistical analysis, the Student-T test was used for an independent sample study and considered the value of probability (p) ≤ 0.05 statistically significant. By comparing the number of repetitions and time under tension of the two runs, all series compared to the first presented significant reductions (p < 0.05). The total work volume was higher with the fast speed (p < 0.05). The study revealed that rapid velocities (cadence 1010) present a higher concentration of blood lactate when compared to slow runs (cadence 3030). The blood lactate concentration, in maximum repetitions, is affected by the speed of execution.Keywords: resistance training, cadence, blood lactate.

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RELATIONSHIPS BETWEEN RECALL OF PERCEIVED EXERTION AND BLOOD LACTATE CONCENTRATION IN A JUDO COMPETITION

Perceptual and Motor Skills ◽

10.2466/pms.92.3.1139-1148 ◽

2001 ◽

Vol 92 (3) ◽

pp. 1139 ◽

Cited By ~ 7

Author(s):

MIGUEL ANGEL SERRANO

Keyword(s):

Blood Lactate ◽

Perceived Exertion ◽

Lactate Concentration ◽

Blood Lactate Concentration

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Effects of cocaine on incremental treadmill exercise in horses

Journal of Applied Physiology ◽

10.1152/jappl.1993.75.6.2727 ◽

1993 ◽

Vol 75 (6) ◽

pp. 2727-2733 ◽

Cited By ~ 10

Author(s):

K. H. McKeever ◽

K. W. Hinchcliff ◽

D. F. Gerken ◽

R. A. Sams

Keyword(s):

Right Ventricular ◽

Blood Lactate ◽

Venous Blood ◽

Lactate Concentration ◽

Blood Lactate Concentration ◽

Ventricular Pressure ◽

Mixed Venous Blood ◽

Work Intensity ◽

Venous Blood Lactate ◽

Mixed Venous

Four mature horses were used to test the effects of two doses (50 and 200 mg) of intravenously administered cocaine on hemodynamics and selected indexes of performance [maximal heart rate (HRmax), treadmill velocity at HRmax, treadmill velocity needed to produce a blood lactate concentration of 4 mmol/l, maximal mixed venous blood lactate concentration, maximal treadmill work intensity, and test duration] measured during an incremental treadmill test. Both doses of cocaine increased HRmax approximately 7% (P < 0.05). Mean arterial pressure was 30 mmHg greater (P < 0.05) during the 4- to 7-m/s steps of the exercise test in the 200-mg trial. Neither dose of cocaine had an effect on the responses to exertion of right atrial pressure, right ventricular pressure, or maximal change in right ventricular pressure over time. Maximal mixed venous blood lactate concentration increased 41% (P < 0.05) with the 50-mg dose and 75% (P < 0.05) with the 200-mg dose during exercise. Administration of cocaine resulted in decreases (P < 0.05) in the treadmill velocity needed to produce a blood lactate concentration of 4 mmol/l from 6.9 +/- 0.5 and 6.8 +/- 0.9 m/s during the control trials to 4.4 +/- 0.1 m/s during the 200-mg cocaine trial. Cocaine did not alter maximal treadmill work intensity (P > 0.05); however, time to exhaustion increased by approximately 92 s (15%; P < 0.05) during the 200-mg trial.(ABSTRACT TRUNCATED AT 250 WORDS)

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Peripheral Modulators of the Central Fatigue Development and Their Relationship with Athletic Performance in Jumper Horses

Animals ◽

10.3390/ani11030743 ◽

2021 ◽

Vol 11 (3) ◽

pp. 743

Author(s):

Francesca Arfuso ◽

Claudia Giannetto ◽

Elisabetta Giudice ◽

Francesco Fazio ◽

Michele Panzera ◽

...

Keyword(s):

Blood Lactate ◽

Athletic Performance ◽

Lactate Concentration ◽

Indirect Evidence ◽

Blood Lactate Concentration ◽

Central Fatigue ◽

Serotoninergic System ◽

Stressful Situation ◽

Passive Behavior ◽

Fatigue Development

The current study aimed to investigate whether peripheral modulators of serotoninergic function and neurohumoral factors’ changes in athletic horses during an official jumping competition, and to evaluate their relationship with the physical performance of competing horses. From 7 Italian Saddle mares (6–9 years; mean body weight 440 ± 15 kg), performing the same standardized warm-up and jumping course during an official class, heart rate (HR) was monitored throughout the competition. Rectal temperature (RT) measurement, blood lactate and glucose concentration, serum tryptophan, leucine, valine, the tryptophan/branched-chain amino-acids ratio (Try/BCAAs), dopamine, prolactin, and non-esterified fatty acids (NEFAs) were assessed before the exercise event (T0), at the end of the competition stage (5 min ± 10 s following the cessation of the exercise, TPOST5), and 30 min after the end of competition (TPOST30). Highest HR values were recorded during the course and at the outbound (p < 0.0001); blood lactate concentration and RT increased after exercise with respect to the rest condition (p < 0.0001). Lower leucine and valine levels (p < 0.01), and higher tryptophan, Try/BCAAs ratio, and NEFAs values were found at TPOST5 and TPOST30 with respect to T0 (p < 0.0001). A higher prolactin concentration was found at TPOST5 and TPOST30 compared to T0 (p < 0.0001), whereas dopamine showed decreased values after exercise compared to rest (p < 0.0001). Statistically significant correlations among the peripheral indices of serotoninergic function, neurohumoral factors, and athletic performance parameters were found throughout the monitoring period. The findings provide indirect evidence that the serotoninergic system may be involved in fatigue during jumper exercise under a stressful situation, such as competition, in which, in addition to physical effort, athletic horses exhibit more passive behavior.

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