References From Studies Are Shown in the Video. Pause on the video and simply copy the study title shown into a search engine to find it.
This study was not shown and so is referenced here: J Sports Sci. Sun et al: Dec 18.
Twelve weeks of low volume sprint interval training improves cardio-metabolic health outcomes in overweight females.
Sun S1,2, Zhang H3, Kong Z1, Shi Q4, Tong TK5, Nie J4.