Which one of the following fitness trends involves performing a specific exercise at a high intensity for 20 seconds, followed by 10 seconds of rest? a. crossfit b. elite fitness c. kettlebell training d. tabata protocol

Tabata Protocol

Explanation:

The study used 20 seconds of ultra-intense exercise (at an intensity of about 170% of VO2max) followed by 10 seconds of rest, repeated continuously for 4 minutes (8 cycles). The exercise was performed on a mechanically braked cycle ergometer. Tabata called this the IE1 protocol.