Exercise electrocardiogram testing in two brothers with different outcome – a case study exercise testing in master cyclists

Figures & data

Figure 1 ECG at rest from brother A.

Abbreviations: aVF, augmented unipolar limb lead in which the positive electrode is on the left leg; aVL, augmented unipolar limb lead in which the positive electrode is on the left arm; aVR, augmented unipolar limb lead in which the positive electrode is on the right arm; ECG, electrocardiogram; SBS, SCHILLER Baseline-Stabilizer.

Figure 2 Exercise ECG from brother A.

Notes: First row = at rest; second row = last step before maximum exertion; third row = maximum exertion; fourth row = after 2 minutes of recovery; fifth row = after 4 minutes of recovery.
Abbreviations: aVF, augmented unipolar limb lead in which the positive electrode is on the left leg; aVL, augmented unipolar limb lead in which the positive electrode is on the left arm; aVR, augmented unipolar limb lead in which the positive electrode is on the right arm; ECG, electrocardiogram.

Table 1 Laboratory results of the two brothers at the time of the checkup

Parameter	Reference value	Brother A	Brother B
Hemoglobin	13.7–17.5 g/dL	14.2	15.2
Hematocrit	40.1%–51.0%	42.7	47.3
Erythrocytes	4.6–6.1 T/L	4.6	5.2
Leucocytes	4.2–9.1 G/L	5.0	7.0
Thrombocytes	140–400 G/L	341	313
Blood sedimentation	<12 mm/h	6	12
GOT	<40 U/L	18	15
GPT	<40 U/L	15	16
Glucose	3.5–6.1 mmol/L	5.4	7.5*
Creatinine	62–106 μmol/L	76	104
Cholesterol	<5 mmol/L	8.1*	7.3*
HDL-cholesterol	0.9–1.6 mmol/L	2.8*	2.0*
LDL-cholesterol	<3 mmol/L	4.9*	4.8*
Triglycerides	0.6–1.7 mmol/L	0.8	1.0
Vitamin D	>20 μg/L	23.4	19.3*
TSH	0.3–5.5 mU/L	2.1	19.2*
PSA	<4 μg/L	0.8	1.6

Note:

* Out of range, blood samples for brother B were not taken in an absolute fasting state.

Abbreviations: GOT, glutamic oxaloacetic transaminase; GPT, glutamic pyruvate transaminase; HDL, high-density lipoprotein; LDL, low-density lipoprotein; TSH, thyroid stimulating hormone; PSA, prostate-specific antigen.

Figure 3 ECG at rest from brother B.

Abbreviations: aVF, augmented unipolar limb lead in which the positive electrode is on the left leg; aVL, augmented unipolar limb lead in which the positive electrode is on the left arm; aVR, augmented unipolar limb lead in which the positive electrode is on the right arm; ECG, electrocardiogram; SBS, SCHILLER Baseline-Stabilizer.

Figure 4 Exercise ECG from brother B.

Notes: First row = at rest; second row = last step before maximum exertion; third row = maximum exertion; fourth row = after 2 minutes of recovery; fifth row = after 4 minutes of recovery.
Abbreviations: aVF, augmented unipolar limb lead in which the positive electrode is on the left leg; aVL, augmented unipolar limb lead in which the positive electrode is on the left arm; aVR, augmented unipolar limb lead in which the positive electrode is on the right arm; ECG, electrocardiogram.