Hello, could you please tell me if the CTG is showing contractions or ...

Training is most likely the cause, and the uterus itself is a muscle that can contract.

CTG (cardiotocography) is a research method that allows the assessment of fetal heartbeat and uterine activity. With CTG, it is possible to detect the presence of contractions and their frequency, intensity, and duration. In the image you added, it can be seen that there is uterine activity (upper graph), which may indicate the presence of contractions. However, for an accurate determination of contractions, it is necessary to consult a doctor who will analyze the CTG data and provide a final answer. If you suspect contractions or other problems during pregnancy, it is recommended to consult a doctor for advice and further investigations.