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Aerobic Fitness Improvements
Research has shown that continuous running, cycling or rowing at around 75% of max heart rate for 20-30 minutes, three times a week for 8-12 weeks will lift V02max by around 20%.
In a circuit weight training session, heart rates average around 80% of max, but oxygen consumption only 40% of V02max, which is the minimum level for aerobic fitness improvements. The energy cost of a circuit training session of this kind has been shown to be 6-9 kcal/min depending on bodyweight.
Według liczb procentowo ACT daje większe efekty w wydolności niż maszyny (aż 20% więcej) więc czemu są tam zwroty "only 40% of VO2max" i "minimum level for aerobic fitness improvements"??? Rozumie ktoś o co chodzi?
Źródło: http://www.bodybuilding.com/fun/luis11.htm
I'm Dr JeKyLl AnD mR jAcKaSs