Effects of ammonium chloride ingestion on phosphocreatine metabolism during moderate- and heavy-intensity plantar-flexion exercise

This study examined the effects of NH 4 Cl ingestion on phosphocreatine (PCr) metabolism during 9 min of moderate- (MOD) and heavy- (HVY) intensity constant-load isotonic plantar-flexion exercise. Healthy young adult male subjects ( n = 8) completed both a control (CON) and NH 4 Cl ingestion (ACID)...

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Veröffentlicht in:	European journal of applied physiology 2010-04, Vol.108 (6), p.1189-1200
Hauptverfasser:	Churchward-Venne, Tyler A., Kowalchuk, John M., Marsh, Greg D.
Format:	Artikel
Sprache:	eng
Schlagworte:	Administration, Oral Ammonium Chloride - administration & dosage Ankle Joint - physiology Biological and medical sciences Biomedical and Life Sciences Biomedicine Fundamental and applied biological sciences. Psychology Human Physiology Humans Male Metabolic Clearance Rate - drug effects Occupational Medicine/Industrial Medicine Original Article Phosphocreatine - metabolism Physical Endurance - drug effects Physical Endurance - physiology Physical Exertion - physiology Sports Medicine Vertebrates: body movement. Posture. Locomotion. Flight. Swimming. Physical exercise. Rest. Sports Young Adult
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Zusammenfassung:	This study examined the effects of NH 4 Cl ingestion on phosphocreatine (PCr) metabolism during 9 min of moderate- (MOD) and heavy- (HVY) intensity constant-load isotonic plantar-flexion exercise. Healthy young adult male subjects ( n = 8) completed both a control (CON) and NH 4 Cl ingestion (ACID) trial. Phosphorus-31 magnetic resonance spectroscopy was used to monitor changes in intracellular pH (pHi), [Pi], [PCr], and [ATP]. During the Middle (3–6 min) and Late (6–9 min) stages of HVY, ACID was associated with a higher ( P
ISSN:	1439-6319 1439-6327
DOI:	10.1007/s00421-009-1327-8