Objective finding | Symptom of participant | Safety measures |
---|---|---|
Ventricular irregular HR of one participant for a few minutes while walking in a warm environment. The measured BP during this period was 76/46 mmHg and when repeated 111/53 mmHg. The RR interval, however, did not deviate from the values measured during the reminder of the experiment. | No symptoms | The participant was instructed to consult a MD because of low BP during baseline rest. A low BP needs to be considered because of post-exercise hypotension. |
One measurement conducted while exercising in the cold was terminated because of ST-depression exceeding 2 mm and detecting adjacent ventricular ectopic beats. | No symptoms | The ECG returned to normal after cessation of exercise. |
Four participants experienced post-exercise hypotension. Three of these occurred after walking in a warm environment (BP 60/35 mmHg, 68/35 mmHg and 87/50 mmHg) and one after exercise in the cold (BP 87/59 mmHg) | Nausea, dizziness | Participants were instructed to lie down until BP recovered to normal. This occurred briefly, after ca. 5 min. |
A total of six participants experienced milder post-exercise hypotension (systolic BP < 100 mmHg). In four cases these occurred after exercise in warm and for two participants in a cold environment. | No symptoms | Constant monitoring the responses and inquiries of subjective symptoms. No additional measures taken. |