Experimental study design
The effects of the RI on the leg press exercise were
examined using a randomized and counterbalanced
within-subjects design. Muscle performance was assessed
via the recording of number of repetitions, sustainability
of repetitions, and total volume. The number of
repetitions can vary with different movement velocities,
which can affect the duration of the set (Sakamoto and
Sinclair, 2006). Thus, the duration of each set also was
recorded. During the experimental period of the study,
each participant visited the laboratory a total of five days
(separated by periods ranging from 48 to 72 hours).