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Applying lactate sampling to interval training in CAD
Author(s) -
Christle Jeffrey Wilcox,
Pressler Axel,
Wisloff Ulrik,
Halle Martin
Publication year - 2013
Publication title -
the faseb journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.709
H-Index - 277
eISSN - 1530-6860
pISSN - 0892-6638
DOI - 10.1096/fasebj.27.1_supplement.1132.1
Subject(s) - interval training , blood lactate , intensity (physics) , medicine , exercise prescription , cardiology , lactate threshold , heart rate , anaerobic exercise , physical therapy , physics , blood pressure , quantum mechanics
Conventional methods used to monitor exercise intensity for interval training (IT) are very limited in patients with heart disease (HD). This study examines the use of arterial lactate [lactate]a kinetics in aiding the objective monitoring of exercise intensity during IT in HD. Thirty‐five CAD patients performed stepwise peak exercise testing (CPX) to exhaustion. Heart rates at 50% to 60% and 80% to 90% of peak VO2 were used to establish IT intensities. Patients performed one bout of IT under medical supervision. HR, RPE and [lactate]a were collected at the end of each interval. The lactate steady state threshold (LSST) was surpassed on average by the 17 th minute of exercise, and concentrations remained above LSST throughout the remainder. The mean [lactate]a were 4.14 mmol/L and 4.65 mmol/L in low‐and high‐intensity phases, respectively. The major energy sources for this form of interval training are aerobic in nature. Nonetheless, the potential physiological significance of high [lactate]a concentrations warrants further investigation. The application of [lactate]a sampling during CPX and AIT provides data that may prove useful in the prescription and monitoring of IT in HD.