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Concept2 Training Guide

Physiology - Training Bands

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Training heart rates are divided into five bands, determined by the RHR, MHR, aerobic threshold and anaerobic threshold. The five training bands can be divided into aerobic and anaerobic. The aerobic bands, utilisation training 2 (UT2) and utilisation training 1 (UT1), rely solely on the aerobic system and form the foundation of most training programmes. In these bands the main fuels are carbohydrate and fat, the percentage of each is dependant on the length of the exercise period. The anaerobic bands, anaerobic threshold (AT), oxygen transport (TR), and anaerobic (AN) combine the full output of the aerobic system with varying input from the anaerobic system. The fuel for these bands is carbohydrate. The table below illustrates the relationship between the training bands and stroke rate. It describes how you may feel during the training and the training effect of working within each band.

Table 3.1

Training Bands
Band Type of Work % MHR Rate (SPM) What it is good for How you feel
UT2 Utilisation 2. Light aerobic, low intensity work. Sustainable and fat burning. 55-70 18-20 General CV fitness. Relaxed. Able to carry on a conversation.
UT1 Utilisation 1. Heavy aerobic work using more oxygen. 70-80 20-24 Higher level of CV fitness. Working. Feel warmer. Heart rate and respiration up. May sweat.
AT Anaerobic Threshold. Harder work. On the aerobic limit. Pushing into anaerobic area. 80-85 24-28 High level of CV fitness. Building mental and physical tolerance. Hard work. Heart rate and respiration up. Carbon dioxide build up. Sweating. Breathing hard.
TR Oxygen Transportation. Working hard. Unsustainable for long periods. 85-90 28-32 Developing oxygen transport to the muscles under stress. Increasing cardiac output. Stressed. Panting. Sweating freely.
AN Anaerobic (without oxygen). Short bursts of maximum effort. Unsustainable. Burning carbohydrate. 90-100 32+ Anaerobic work. Increasing speed. Accustoming the body to work without oxygen. Very stressful. Gasping. Sweating heavily.

Notes:
SPM = strokes per minute
%MHR = percentage of maximum heart rate
CV = cardiovascular

The different training bands use differing amounts of carbohydrates and fats as their primary source of fuel. Table 3.2 below gives a rough indication of the fuel usage at different intensities of exercise. Remember that this is only a rough guide as the percentage of fat versus carbohydrates used during exercise is dependant on duration and fitness as well as intensity.

Table 3.2

Relationship between Exercise Intensity and Energy Source
Exercise Intensity
%MHR
Heart Rate
(bpm)
% Carbohydrate % Fat Length of time at required intensity
65-70 130-140 40 60 60-90 mins
70-75 140-150 50 50 30-60 mins
75-80 150-160 65 35 15-30 mins
80-85 160-170 80 20 10-15 mins
85-90 170-180 90 10 4-6 mins
90-95 180-190 95 5 90 secs-4 mins
100 190-200 100 - 45-60 secs

Notes:
Example 20 year old, MHR = 200