GXT (Graded Exercise Test) Interpretation
Rider ___________________________  
Test Date 1 __________ Test Date 2 __________  Test Date 3 __________

Transfer each data point. X data point value is the power generated during each additional sequential minute of the GXT. The Y data point is the heart rate at the end of that minute. Plot HR (Y axis) versus P (X axis) and connect dots into a line. With training, the line should move to the right, indicating higher wattage for a given heart rate. 

HR
175
170
165
160
155
150
145
140
135
130
125
120
115
110
105
100
95
90
P(watts)>	100	120	140	160	180	200	220	240	260	280	300	320	340	360	380	400	420

From the GXT, note point where hard breathing becomes labored and a sense of shortness of breath sets in. This is the VT (Ventilation Threshold). It should occur at an RPE of around 7. Lactate threshold (LT) occurs about one box previously. This point is your lactate threshold heart rate. With training, the LT should occur at a higher wattage.

Lactate Threshold Heart Rate: LTHR 1 _______  LTHR 2 _______  LTHR 3 _______
Lactate Threshold Power (Wattage range): LTP 1 _______  LTP 2 _______  LTP 3 _______
Training Zones as a percentage of LTHR (Z1 recovery, Z2 base, Z3 aerobic, Z4 anaerobic):
Z1 70% LTHR =_____, Z2 85% LTHR =_____, Z3 @LTHR =_____, Z4 110% LTHR =_____