{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,2,21]],"date-time":"2026-02-21T03:15:09Z","timestamp":1771643709627,"version":"3.50.1"},"reference-count":0,"publisher":"American Physiological Society","issue":"1","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Journal of Applied Physiology"],"published-print":{"date-parts":[[1983,7,1]]},"abstract":"<jats:p> Six healthy subjects performed four exercise studies in random order on separate days: a control study, metabolic acidosis induced by ammonium chloride, metabolic alkalosis induced by sodium bicarbonate, and respiratory acidosis induced by 5% CO2 inhalation. The subjects exerted maximal force on the pedals of a constant-velocity cycle ergometer at 100 rpm for 30 s; torque was measured and power calculated. Arterialized venous blood was sampled, and plasma lactate concentrations was measured immediately after and at 2-min intervals for 10 min following exercise. Although maximal peak power and total work, for the 30-s test, were lower in the two acidosis conditions, this effect was not statistically significant. Plasma lactate 30-s postexercise was lower in metabolic acidosis (2.8 +\/- 1.6 mmol X 1(-1) (mean +\/- SD) and respiratory acidosis (1.5 +\/- 0.8 mmol X 1(-1) than in placebo conditions (5.9 +\/- 3.3 mmol X 1(-1) and metabolic alkalosis 7.8 +\/- 4.2 mmol X 1(-1). These differences were maintained but lessened during 10 min of recovery. In contrast to previous studies, which showed a marked reduction in endurance time during sustained heavy exercise, reductions in blood pH are associated with only small reductions in the total work performed in 30 s of maximal exercise. A delayed and smaller accumulation of lactate in plasma was observed following exercise during acidosis. <\/jats:p>","DOI":"10.1152\/jappl.1983.55.1.225","type":"journal-article","created":{"date-parts":[[2017,12,25]],"date-time":"2017-12-25T00:35:59Z","timestamp":1514162159000},"page":"225-229","source":"Crossref","is-referenced-by-count":51,"title":["Effects of pH on maximal power output and fatigue during short-term dynamic exercise"],"prefix":"10.1152","volume":"55","author":[{"given":"N.","family":"McCartney","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"G. J.","family":"Heigenhauser","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"N. L.","family":"Jones","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"24","container-title":["Journal of Applied Physiology"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/www.physiology.org\/doi\/pdf\/10.1152\/jappl.1983.55.1.225","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2019,9,9]],"date-time":"2019-09-09T01:45:01Z","timestamp":1567993501000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.physiology.org\/doi\/10.1152\/jappl.1983.55.1.225"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[1983,7,1]]},"references-count":0,"journal-issue":{"issue":"1","published-print":{"date-parts":[[1983,7,1]]}},"alternative-id":["10.1152\/jappl.1983.55.1.225"],"URL":"https:\/\/doi.org\/10.1152\/jappl.1983.55.1.225","relation":{},"ISSN":["8750-7587","1522-1601"],"issn-type":[{"value":"8750-7587","type":"print"},{"value":"1522-1601","type":"electronic"}],"subject":[],"published":{"date-parts":[[1983,7,1]]}}}