Which statement best describes the benefits of muscular fitness training? a. high levels of muscular fitness can improve your self-image and improve or prevent chronic diseases such as diabetes, osteoporosis, and cardiovascular disease. b. low levels of muscular fitness also translate into low levels of back pain, injury, and chronic diseases like headaches and osteoporosis. c. low levels of muscular fitness will decrease your chances for sarcopenia and increase your chances of some chronic illnesses. d. high levels of muscular fitness translate into high levels of diabetes, osteoporosis, and chronic injuries that cause back pain

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An 80-year-old woman comes to the urgent care clinic with dyspnoea on exertion. on physical examination, her blood pressure is 100/70, and her pulse is 75. she has no pulsus paradoxus. her jugular veins are distended, and she has distant heart sounds. in addition, she has extra third and fourth heart sounds. her liver is enlarged, and she has pedal oedema. she has occasional premature ventricular contractions on her electrocardiogram. a chest x-ray reveals clear lung fields with a dilated cardiac silhouette. her echocardiogram reveals ventricular walls with a "speckled pattern". which of the following is the most likely diagnosis? - alcoholic cardiomyopathy- amyloidosis- haemochromatosis- tuberculosis- viral myocarditis

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