Lactate Thresholds
Mostrando 1-12 de 15 artigos, teses e dissertações.
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1. Speed and Grade Increment During Cardiopulmonary Treadmill Testing: Impact on Exercise Prescription
Abstract Background: Maximal oxygen uptake (VO2max) and both first (VT1) and second (VT2) thresholds have been used as reference points for exercise prescription in different populations. Objective: We aimed to test the hypothesis that exercise prescription, based on VTs determined by treadmill cardiopulmonary exercise testing (CPET), is influenced by the
Int. J. Cardiovasc. Sci.. Publicado em: 12/08/2019
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2. Effects of supplementation with Saccharomyces cerevisiae and aerobic training on physical performance of Mangalarga Marchador mares
The objective of this study was to assess the effects of supplementation with Saccharomyces cerevisiae on the performance of Mangalarga Marchador equines and to verify the effectiveness of the aerobic training protocol adopted. The study used 14 Mangalarga Marchador mares in a completely randomized split-plot design. The plots were made up of two treatments
R. Bras. Zootec.. Publicado em: 2015-01
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3. Determinação das zonas de transição metabólica durante a corrida mediante os limiares de variabilidade da frequência cardíaca / Determination of transition metabolic zones during running using hert rate variability thresholds
The aim of the present study was to obtain evidences of validity and reliability of the thresholds of heart rate variability (HRV). Nineteen male subjects, healthy and runners (30,4 ± 4,1 years; 175,9 ± 6,4 cm; 74,3 ± 8,5 kg) performed a progressive maximal test on a treadmill with initial velocity 5 km.h-1 e increases of 1 km.h-1 every 3 minutes (1% slop
Publicado em: 2011
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4. Identificação dos limiares de lactato, ventilatórios e eletromiográficos em exercício resistido
Resistance training (RT) has been subject of several scientific studies, since its application not only for aesthetic purposes, but in health promotion and sports activities. To understand the determinants of physical performance is necessary to analyze biochemical, biomechanical and physiological phenomena triggered as a result of each physical activity pro
Publicado em: 2010
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5. Identification of metabolic thresholds of road cyclists in field test / Identificação de limiares metabólicosde ciclistas de estrada a partir de teste de campo
O presente estudo teve por objetivo obter evidências da validade de identificação dos limiares de lactato e de percepção subjetiva de esforço (PSE) em teste de campo, comparando com o desempenho, em ciclistas de estrada. Esta é uma modalidade em que a aptidão aeróbia é uma importante determinante de desempenho; porém, haja vista que o VO2máx pare
Publicado em: 2008
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6. Heart rate variability threshold in different ergometric protocols / Limiar de variabilidade da freqüência cardíaca em diferentes protocolos ergométricos
The heart rate variability (VFC) decreases gradually during progressive exercise, which tends to stabilization in intermediate loads. Initially, the possibility of identification of a threshold of this variable (LiVFC1), assumed as demarcating of the transition of the vagal withdrawal for the predominance of the sympathetic activity in the control of the FC
Publicado em: 2008
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7. "Pode os limiares da variabilidade da freqüência cardíaca identificar os limiares metabólicos?" / CAN HEART RATE VARIBILITY IDENTIFY THE METABOLIC THRESHOLDS?
The purpose of this study was to verify the possibility of metabolic thresholds identifications through HRV. For that, 22 male volunteers [74,5 + 7,99kg, 177,0 + 8cm, 23,86 + 1,69 (body mass index) e 9,10 % fat], familiarized to cyclism practice, realized a cycloergometer test with initial load of 120W and 30W increases every 3min., until exhaustion. During
Publicado em: 2006
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8. IdentificaÃÃo dos limiares de lactato, glicÃmico e ventilatÃrio e efeitos da intensidade do exercÃcio resistido sobre a glicemia em diabÃticos tipo-2
The aim of this study were: 1) to identify the incidence and compare the lactate (LT), glycemic (IGT) and ventilatory thresholds (VT) in cycle ergometer, as well as the lactate (LT)and glycemic thresholds (GT) in resistance exercise in type 2 diabetics; 2) to correlate the thresholds on cycle ergometer with the thresholds determined on resistance exercises;
Publicado em: 2006
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9. Efeito da suplementaÃÃo de cafeÃna sobre biomarcadores salivares e plasmÃticos em ciclistas e praticantes de spinning durante teste incremental no cicloergÃmetro
This study investigated the effect of the caffeine ingestion in the salivary biomarkers, blood lactate and the physical performance, during incremental test in cycle ergometer. We tested 16 cycle men and practitioners of spinning in an adaptative test, phase A, and after the ingestion of placebo and caffeine (5mg/kg), phase B. The exercise protocol was initi
Publicado em: 2006
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10. Identification methods of physiological transition thresholds from intermittent progressive protocols with pause / Métodos de identificação do limiar de transição fisiológica em protocolo progressivo intermitente com pausa
The purpose of this work was to study identification methods of physiological transition thresholds from intermittent progressive protocols with pause. In addition, compare the values of speed, heart rate (HR) and blood lactate concentration ([La]) between different methods used. The participants were 10 male football players, with mean age of 19,99 1,75 yea
Publicado em: 2006
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11. Efeito da depleção prévia de glicogênio muscular sobre o tempo de exaustão em exercício de diferentes domínios fisiológicos
O objetivo do presente estudo foi avaliar o efeito da depleção prévia de glicogênio muscular sobre o tempo de exaustão em exercício abaixo e acima de do segundo limiar de lactato. Sete indivíduos foram submetidos a um teste progressivo (20 W.min-1) até a exaustão, com determinação do VO2max, do primeiro (LL1) e do segundo (LL2) limiar de lactato.
Publicado em: 2005
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12. Influencia da suplementação de Aspartato e Asparagina sobre a associação entre os limiares metabolicos e ventilatorios e sobre a taxa de oxidação de nutrientes durante o exercicio
The anaerobic threshold (A T), defined as the levei of work or the O2 consumption (V02) just below that at which metabolic acidosis and associated changes in gas exchange occur, is composed of a supposed cause-effect association of 2 individual thresholds - lactate or metabolic (MT) and ventilatory (VT). However the proposed mechanisms to explain musclelbloo
Publicado em: 2004