Well the answer is a qualified Yes. Exertion, lifting weight, doing strenuous exercise can all precipitate a heart attack
There are 5 different types of heart attacks.
1- Due to coronary artery disease.
2- Due to increased demand or decreased supply (as in case of heavy exercise, anemia, thyrotoxicosis
, vasospasm, embolism, hypertension
3- Sudden Cardiac Death
4a- Associated with Percutaneous intervention (PCI).
4b- Stent thrombosis
5- Associated with Coronary artery bypass grafting (CABG).
If you were diagnosed with a heart attack (with an ECG and Troponin positive) Your condition fits in the 2nd type of heart attack (secondary to ischemia).
Please do not hesitate to ask in case of any queries.