wits study guide practice exams Questions and Answers

Personal Trainer Certification Practice Exam #1 1.)_________________ is the most important source of immediate energy which lasts about 3 - 5 seconds (Ch. 4, P. 66) - Answer- ...a.Phosphocreatine 2.)During muscle contraction, the _______________ releases calcium into the sarcoplasm, which allows for actin-myosin interaction. (Ch. 4, P. 68) - Answer- ...plasmic reticulum 3.)Which type of muscle fiber not only produces great force when stimulated but also resists fatigue? (Ch. 4, P. 69) - Answer- ...b.Type IIa 4.)The volume of blood pumped by the heart per beat is known as ______________. (Ch. 4, P. 78) - Answer- ...e volume 5.)What are the primary reasons women have lower VO2max values than men? (Ch. 4, P. 76) - Answer- ...lobin levels and body fat percentage 6.)As the respiratory exchange ratio (R) increases, ______________ become the primary fuel source for activity. (Ch. 4, P. 73) - Answer- ...hydrates 7.)Studies have revealed that ____________ is the most significant factor in maintaining VO2max with a reduced training load. (Ch. 4, P. 83) - Answer- ...sity 8.)_________ is the primary energy source cells use for biological work. (Ch. 4, P. 66) - Answer- ...b.ATP