View All Categories Show VT1 is called the first ventilatory threshold. It is a marker of intensity that can be observed in a person’s breathing at a point where lactate begins to accumulate in the blood. As the intensity of the exercise begins to increase, VT1 can be identified at the point where the breathing rate begins to increase. A person who is at VT1 can no longer talk comfortably,—but can still string together a few words—while exercising,. Also observed by way of a person’s breathing during exercise is VT2, or the second ventilatory threshold. It is a higher marker of intensity than VT1. At VT2, lactate has quickly accumulated in the blood and the person needs to breathe heavily. At this rapid rate of breathing, the exerciser can no longer speak. The exercise duration will necessarily decrease due to the intensity level. VT2 can also be called the respiratory compensation threshold (RCT) and the onset of blood lactate accumulation (OBLA). VO2 max is the maximal consumption of oxygen. It is the maximum capacity of the body to take in, transport, and use oxygen during exercise and reflects a person’s cardiorespiratory fitness. Measuring VO2 max is a laboratory procedure that requires equipment to analyze the amount of oxygen inhaled and the amount of carbon dioxide exhaled. This test will take an individual to the absolute maximum exercise intensity that he or she can achieve. Maximum heart rate can also be measured at this point. A deconditioned person has a lower VO2 max than someone who is conditioned. As an exerciser becomes more conditioned, his or her VO2 max will increase. Here is a simple way to picture a progression of these markers of exercise intensity (from least to most intense):
A sedentary person will reach VT1, VT2, and VO2 max at a much lower intensities of exercise than a more physically active person. For example, an extremely deconditioned person may reach his or her VT1 while just walking. Conversely, a more conditioned person will reach these markers at a higher intensity. For example, he or she may reach VT1 at a running speed of 6 miles per hour. ACE® Pro Compass has arrived!
It's time to map out the career you want. ACE® Pro
Nicole is an ACE Certified Personal Trainer, Medical Exercise
Specialist, Group Fitness Instructor, and Health Coach as well as an ACE Senior Fitness Specialist and Fitness Nutrition Specialist. She holds an M.A. in Sport and Performance Psychology and studied Fitness Instruction/Exercise Science at the University of California, San Diego. Her love of health, fitness, and learning landed her at the American Council on Exercise in 2015 where she continues to cultivate those passions. She has worked in the health and fitness industry for many years, applying
her wisdom of sports psychology, exercise science, and health coaching to a wide variety of clients. When she is not studying for her next ACE certification, she is usually training for her next half marathon. Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.
What population is the VT2 talk test appropriate for NASM?NASM
What range of intensity defines Zone 2?Zone 2 is one of five heart rate zones you can enter when training. It usually refers to intensities where your heart rate is 60-70% of your maximum, with most athletes choosing cardiovascular exercises like walking, running, cycling and swimming to achieve this.
How is VT1 identified when using the talk test during a cardio workout?As the intensity of the exercise begins to increase, VT1 can be identified at the point where the breathing rate begins to increase. A person who is at VT1 can no longer talk comfortably,—but can still string together a few words—while exercising,.
What two electrolytes are most commonly supplemented by athletes to replace those lost in sweat?Sodium and chloride are the most abundant electrolytes in sweat and are responsible for regulating and maintaining fluid balance (along with potassium). Magnesium and calcium play important roles in maintaining muscle function and optimizing metabolism.
|