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Titolo:
EFFECT OF A LOW CARBOHYDRATE-DIET ON PLASMA AND SWEAT AMMONIA CONCENTRATIONS DURING PROLONGED NONEXHAUSTING EXERCISE
Autore:
CZARNOWSKI D; LANGFORT J; PILIS W; GORSKI J;
Indirizzi:
MED ACAD BIALYSTOK,DEPT PHYSIOL,UL MICKIEWICZA 2C PL-15230 BIALYSTOK POLAND POLISH ACAD SCI,MED RES CTR,DEPT APPL PHYSIOL WARSAW POLAND ACAD PHYS EDUC,DEPT PHYSIOL KATOWICE POLAND
Titolo Testata:
European journal of applied physiology and occupational physiology
fascicolo: 1, volume: 70, anno: 1995,
pagine: 70 - 74
SICI:
0301-5548(1995)70:1<70:EOALCO>2.0.ZU;2-Q
Fonte:
ISI
Lingua:
ENG
Soggetto:
FAST-TWITCH MUSCLE; AMINO-ACID; GLYCOGEN DEPLETION; IMP ACCUMULATION; METABOLISM; SUPPLEMENTATION; NUCLEOTIDE; PROTEIN; CYCLE;
Keywords:
AMMONIA; EXERCISE; LOW-CARBOHYDRATE DIET; SWEAT;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
30
Recensione:
Indirizzi per estratti:
Citazione:
D. Czarnowski et al., "EFFECT OF A LOW CARBOHYDRATE-DIET ON PLASMA AND SWEAT AMMONIA CONCENTRATIONS DURING PROLONGED NONEXHAUSTING EXERCISE", European journal of applied physiology and occupational physiology, 70(1), 1995, pp. 70-74

Abstract

The purpose of this investigation was to examine the effect of low body glycogen stores on plasma ammonia concentration and sweat ammonia excretion during prolonged, nonexhausting exercise of moderate intensity. On two occasions seven healthy untrained men pedalled on a cycle ergometer for 60 min at 50% of their predetermined maximal O-2 uptakes (VO2max) firstly, following 3 days on a normal mixed diet (N-diet) (60%carbohydrates, 25% fat and 15% protein) and secondly, following 3 days on a low-carbohydrate diet (LC-diet) (less than 5% carbohydrates, 50% fat and 45% protein) of equal energy content. Blood was collected from the antecubital vein immediately before, at 30th and at 60th min ofexercise. Sweat was collected from the hypogastric region using gauzepads. It was shown that plasma ammonia concentrations after the LC-diet were higher than after the N-diet at both the 30th and 60th min of exercise. Sweat ammonia concentration and total ammonia loss through the sweat were also higher after the LC-diet. The higher ammonia concentrations in plasma and sweat after the LC-diet would seem to indicate an increased ammonia production, which may be related to reduced initial carbohydrate stores.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 26/09/20 alle ore 17:42:34