A Review by Alyssa Bialowas
Tools for aerobic fitness evaluation in endurance training are used in sport and clinical fields to test blood lactate levels for training and competition. Anaerobic threshold (LTAN) is defined as the point during exercise at which lactic acid starts to accumulate in the muscles, the point in intense exercise that anaerobic processes become more dominant. Endurance performance prediction and prescribing optimal training intensities are two important applications of studying anaerobic threshold.
There is controversy in the sport and clinical fields around the need to develop additional tools for aerobic fitness evaluation, and their validity to determine aerobic fitness. The purpose of this study was to analyze the sensitivity of glucose minimum intensity (GMI) and LMI to endurance training.
Related Article: HIIT Responses In Endurance & Sprint Athletes
A group of 8 trained cyclists participated in this study. They completed two sets of tests, one after the off-season period in March and the other after 12 weeks of training in June. The first test consisted of a maximal incremental test to evaluate the maximal oxygen uptake (VO2max), and the second assessed LMI and GMI intensity.
The GMI and LMI test started off with a 30 second Windgate test (an all-out, very difficult anaerobic exercise test performed on a stationary bike), followed by 8 minutes of rest, and then cycled until voluntary exhaustion. In the end of each stage, blood samples were taken, and heart rate was monitored during the test.
The training program consisted of 12 weeks at three different testing intensities, and blood lactate was determined after testing in each zone.
In the tests after training, blood lactate levels after maximal exercise was significantly greater than in pre-testing. No significant differences were found in blood glucose levels between pre and post. In all of the cyclists, VO2 max, LMI, and GMI increased significantly after 12 weeks of high intensity endurance training.
Both GMI and LMI are important indexes of aerobic fitness, and can be used as an important index to training prescription in well-trained cyclists and athletes. High intensity interval training proved very effective in improving maximal oxygen uptake, and should be used as a training tool for improving aerobic fitness.
Related Article: The Elevation Training Mask – A Competitive Advantage
You Might Like:
Evan Stevens We’ve seen that HIIT (shorter, highly strenuous bursts of activity separated by periods of low intensity or rest) and CEE (a continuous bout of exercise without a break interval and can be performed at low,
Katie Rose Hejtmanek, PhD, Anthropologist Increase Strength, Increase Lifespan Part 2 – Powerlifting as Life Changing Sport In my previous article, I showed that some research investigates the relationship between muscle mass, power, strength, and the
A Review by Alyssa Bialowas There are many common therapeutic approaches to alleviating neuromuscular muscle fatigue following training. Such as, nutritional supplementation, wearing compression clothing, cryotherapy, cryocompression, stretching and low-intensity exercise following intense forms
Campos, E., de Andrade, V., de Araujo, G., Junior, P., Kalva-Filho, C., Papoti, M., &
Zagatto, A. “Effect of Endurance Training on The Lactate and Glucose Minimum Intensities.” Journal of Sport Science and Medicine, 17, 117-123.