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The "12-3-30" workout, the brainchild of social media influencer Lauren Giraldo, involves walking on a treadmill for 30 minutes at a 3 mph pace and on a 12% incline.
The 12-3-30 workout is a walking incline treadmill routine that people say improves endurance, boost mental health and helps with weight loss.
After 3 min incline of the treadmill is increased by 2%, and the speed increases. Indications to terminate the test include signs or symptoms of impaired blood flow to the heart, irregular heart rhythm, fatigue, shortness of breath, wheezing, leg cramps, or any impairment in walking or pain, discomfort, numbness, or tiredness in the legs. [5]
Michelle Porter, a certified health and wellness coach, NASM-certified personal trainer, and founder of Michelle Porter Fit, said the 12-3-30 treadmill workout involves walking at a 12% incline at ...
Gottschall and Kram (2004) mounted a force treadmill on wedges of varying inclines and found that compared to level running, the initial impact peak was decreased at 3, 6, and 9 degrees of inline. They also found that the braking parallel GRF was absent at 9 degrees of incline in addition to a 75% increase in the propulsive parallel GRF. [8]
An alternative form of HIIT, designed for heart rate training, involves a 30-minute period of cardio followed by 30 minutes of full-body resistance training to help maximize calorie burning. [15] The idea is to combine aerobic exercise with intense weight and resistance training to achieve a high level heart rate for an extended period of time ...
The workout is simple: Set the treadmill to an incline of 12 (or lower — choose a challenging incline for your fitness level!) at a speed of 3 miles per hour and walk for 30 minutes.
AeT is the exercise intensity at which anaerobic energy pathways start to operate, considered to be around 65-85% of an individual's maximum heart rate. [2] Some have suggested this is where blood lactate reaches a concentration of 2 mmol /litre (at rest it is around 1). [ 3 ]