Question

Attempts have been made to use heart rate to predict energy expenditure (EE) (Keytel et al., 2005, J Sports Sciences). Use the following equation to predict the energy expenditure in kjoules/min to go up and down the stairs and use the elevator. For gender, enter a 1 for male and 0 for female.

EE = gender x (-55.0969 + 0.6309 x heart rate + 0.1988 x weight + 0.2017 x age) + (1 - gender) x (-20.4022 + 0.4472 x heart rate - 0.1263 x weight + 0.074 x age) Multiply this number by the number of minutes taken to do these activities and then convert to kcals (1kcal=4.184 kjoules) to determine the total number of calories to do these activities. Based off these data, will taking the stairs be beneficial in losing weight? Keep in mind that an extra 50 kcal/day will lead to a weight gain of 5 lbs/year; a weight gain that is consistent with the obesity epidemic in the U.S.  

male, 26-year-old,180 lbs, control EE 72bpm, EE 140 bpm

Answer 1

given
gender = male
hence EE = (-55.0969 + 0.6309*heartrate + 0.1988*weight + 0.2017*age)

age = 26 years
weight = 180 lbs
heartrate = 140 bpm ( for the case when using a flight of stairs and the heart starts to beat faster)

hence
EE = 74.2573 kj/min
hence
EE = 17.747920650 kCal

hence
in one day if a person climbs up the stairs for one minute
E = EE*1 = 17.74792065 kCal
hence
weight loss= (E/50)*5 = 1.77479206 lbs per year for one minute flight of stairs per day