Respiratory adaptations to endurance training include which of the following?

A volleyball player would like to increase her vertical jump, how can this athlete improve her force production?

During freestyle swimming, which of the following muscles acts as a synergist to the deltoid with regards to upper arm movement?

Which of the following relates to kettlebell training as a strength and conditioning tool?
I. Kettlebell swings are superior to traditional weightlifting in terms of increasing vertical jump height
II. Kettlebell training increases muscular strength compared to no training
III. Kettlebell swings offer the same level of cardiovascular benefit as treadmill training
IV. Kettlebell goblet squats are inferior to back barbell squats in terms of developing muscular strength

A softball player elects to use the vertical (machine) chest press, in order to ensure proper alignment for the exercise the handles should be at the level of what anatomical landmark?