Darell has a home gym that his older brother set up. nobody has used the gym for a few years but darell has decided to give weight lifting a try. he talks to his gym teacher, who shows him proper form for the exercises and does performance testing. together they design a starter program that includes a warm-up, stretching, and some basic weight-lifting exercises, followed by a time of stretching. on the first day of his routine, darell is injured. what is the most likely cause of his injury? a. darell is experiencing what can happen when you overtrain. b. darell is experiencing what can happen when you don't know how to do the exercises. c. darell is experiencing what can happen when you don't properly plan a workout. d. darell most likely did not check the gym equipment for safety issues before he used it.

A46-year-old man with a history of hypertension and hypercholesterolemia visits the physician for a routine followup. the patient's job involves a lot of travelling, and he admits to occasionally forgetting to take his medications with him when he travels. he complains of several episodes of chest pain in the past few months. the pain is sharp in nature, mainly over his lower chest and epigastrium, and tends to come on when walking. he believes these episodes are due to indigestion and has been taking antacids. there is a family history of heart disease, and his father died of a heart attack at age 48. on physical examination, his blood pressure is 150/80 mmhg and heart rate is 86/min. his lungs are clear to auscultation. cardiac auscultation reveals normal rate and rhythm, without rubs, gallops, or murmurs. there is no pedal oedema. he is sent for an exercise stress test. five minutes into the test, he develops st depression of 3mm in leads v1-v5. the st segment depression is greater than 0.12 seconds in duration and the stress test is stopped. which of the following is the most appropriate next step in management? - coronary angiography- holter monitor- no further tests are required- repeat stress test with thallium- upper gastrointestinal endoscopy