Name: Numer: Study group:
This text was supported by project FRMU no. MUNI/FR/1552/2015 (Faculty of Medicine, Masaryk University).
Protocol
Ergometry
Methods
Equipment
Bicycle ergometry + continuous incremental steps protocol + 2-lead ECG
Procedure:
The experimental subject takes a seat on the bicycle ergometer. Place five ECG electrodes on
the chest (scheme near PC). Connect the electrodes and PowerLab recording system using
ECG cables.
Start up the program called ERGOMETRY by double-clicking the icon. Set the amplifier
sensitivity for ECG registration in channel 1 and 2. Upper two channels represent the ECG
curve obtained from 2-lead ECG, lower two channels represents the heart rate calculated from
the RR intervals of corresponding ECG leads.
Record continuous ECG during all 5 phases of the exercise.
1. Resting period – record resting ECG for 1 minute
2. Warm-up period – set 20W on the ergometer, the experimental subject cycles at a
constant speed (60 turns/minute) for 1 minute.
3. Stress testing
 Stage 1: set 1 W/kg on the ergometer (weight of the person x 1W), the person
cycles for 3 minutes at a constant speed;
 Stage 2: set 2 W/kg on the ergometer (weight of person x 2 W), the person
cycles for 3 minutes at a constant speed;
 Stage 3: set 3 W/kg on the ergometer (weight of the person x 3 W), the person
cycles for 3 minutes at a constant speed;
4. Cool-down period: set 20 W on the ergometer, the person cycles for 1 minute at a
constant speed.
5. Recovery period: the person simply sits on the ergometer without pedaling for 9
minutes; subsequently stop the ECG recording, insert comments about particular phases,
and save the recording as “Ergometry XY” to the computer memory.
Evaluation:
In the 3rd
or 4th
channel (that represent the heart rate calculated from the 1st
and 2nd
ECG
channels, respectively) choose the last 30 seconds of each phase (resting period, warm-up
period, 3 endurance stages, cool-down period and recovery period at the end of the 3rd
, 6th
and
9th
minute); the value of the heart rate will appear in a mini-window.
Use the obtained data to construct a graph of heart rate (axis y) dependence on time and work
(axis x). Interpolate a line among points representing the endurance phases and estimate work
at the heart rate 170/minute (index W170). Compare your value with physiological values.
Name: Numer: Study group:
This text was supported by project FRMU no. MUNI/FR/1552/2015 (Faculty of Medicine, Masaryk University).
Results
Man heart rate
W170 = …… W/kg
Conclusion
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person rest 20W 1W/kg 2W/kg 3W/kg 20W 3rd min 6th min 9th min
Name: Numer: Study group:
This text was supported by project FRMU no. MUNI/FR/1552/2015 (Faculty of Medicine, Masaryk University).
Time,min