Potassium loss from skeletal muscle during exercise in man: a radioisotope study.

Journal article

Muscle potassium (K+) content decreases during exercise. Previous studies, in humans, have used measurements of arteriovenous plasma potassium concentration differences (AV delta[K+]) and/or muscle biopsy to measure the loss of muscle K+ during exercise. In the current study a non-invasive method was developed to measure skeletal muscle K+ before and after exercise, using an isotope of K+, potassium-43 (43K+). Twelve subjects performed single-leg extension exercise for 2 h at 50% of their max...

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Authors: Qayyum, MS; Freemantle, C; Carey, C; Page, B; Soper, N

• Publication status: Published
• Journal: Experimental physiology
• Volume: 78
• Issue: 5
• Pages: 639-648
• Publication date: 1993-09-01
• EISSN: 1469-445X
• ISSN: 0958-0670
• Language: English
• Keywords: Muscles; Exercise; Humans; Heart Rate; Male; Potassium; Potassium Radioisotopes; Adult; Physical Exertion