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Influence of body carbohydrate store modification on catecholamine and lactate responses to graded exercise in sedentary and physically active subjects

100%

Mikulski T., Ziemba A., Nazar K.

Journal of Physiology and Pharmacology

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2008

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tom 59

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nr 3

603-616

Aim of this study was to elucidate the influence of carbohydrate store modification on exercise capacity and catecholamine thresholds. Nine sedentary students and 10 endurance athletes volunteered for the study consisting of four sessions in one-week intervals. During control session (C) subjects performed graded exercise till exhaustion with workload increasing by 50 Watts every 3 min after an overnight fast. Blood lactate and catecholamines were determined at rest, after each workload and at exhaustion. In the evening preceding each of the remaining three sessions subjects performed glycogen reducing exercise lasting 1.5 hrs at 70% HRmax. Till next morning they did not eat any meal but drank water. Two hours before exercise subjects were given either a high-carbohydrate (H-CHO) or a low-carbohydrate (L-CHO) meal of approx. 1000 kcal or remained fasted (F). Depletion of carbohydrate stores enhanced contribution of fat-derived energy substrates at submaximal workloads, but did not influence either maximal oxygen consumption, workload and lactate concentration or lactate threshold. Low carbohydrate availability resulted in elevated concentration of catecholamines only in untrained subjects. Ingestion of a meal either high or low in carbohydrates diminished those changes. Catecholamine thresholds were similar in all sessions and higher in athletes’ group.

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Myosin heavy chain composition in the vastus lateralis muscle in relation to oxygen uptake and heart rate during cycling in humans

100%

Majerczak J., Nieckarz Z., Karasinski J., Zoladz J. A.

Journal of Physiology and Pharmacology

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2014

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tom 65

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nr 2

3

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Pre-exercise acidification induced by ingestion of NH4Cl increases the magnitude of the slow component of VO2 kinetics in humans

84%

Zoladz J., Duda K., Majerczak J., Emmerich J., Domanski J.

Journal of Physiology and Pharmacology

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1998

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tom 49

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nr 3

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Influence of thyroid hormones on exercise tolerance and lactate threshold in rats

67%

Zarzeczny R., Pilis W., Langfort J., Kaciuba-Uscilko H., Nazar K.

Journal of Physiology and Pharmacology

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1996

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tom 47

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nr 3

5

Effect of low-carbohydrate - katogenic diet on metabolic and hormonal responses to graded exercise in men

67%

Langfort J., Pilis W., Zarzeczny R., Nazar K., Kaciuba-Uscilko H.

Journal of Physiology and Pharmacology

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1996

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tom 47

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nr 2

Ograniczanie wyników

5 Journal of Physiology and Pharmacology

3 Nazar K.

2 Kaciuba-Uscilko H.

2 Langfort J.

2 Majerczak J.

2 Pilis W.

2 Zarzeczny R.

1 Domanski J.

1 Duda K.

1 Emmerich J.

1 Karasinski J.

1 Mikulski T.

1 Nieckarz Z.

1 Ziemba A.

1 Zoladz J.

1 Zoladz J. A.

1 2014

1 2008

1 1998

2 1996

Influence of body carbohydrate store modification on catecholamine and lactate responses to graded exercise in sedentary and physically active subjects

Myosin heavy chain composition in the vastus lateralis muscle in relation to oxygen uptake and heart rate during cycling in humans

Pre-exercise acidification induced by ingestion of NH4Cl increases the magnitude of the slow component of VO2 kinetics in humans

Influence of thyroid hormones on exercise tolerance and lactate threshold in rats

Effect of low-carbohydrate - katogenic diet on metabolic and hormonal responses to graded exercise in men