How accurate are our online calculators?

We have spent a considerable amount of time in research and getting our online calculators as accurate as possible, and we are confident in saying that our calculators are among the most accurate — if not the most accurate — publicly available. Some of the variables we take into consideration when performing calculations are, but not limited to:

• Arm length (distance travelled)
• Leg length (distance travelled)
• Force is always required during the concentric phase of an exercise
• Force is always required during the deceleration of the eccentric phase
• The amount of force required during the eccentric phase varies depending on whether the weight is dropped or lowered
• Force is only required for a small part of the distance travelled during ballistic exercises
• Body weight is related to how much energy is spent for the same activity [1]
• Energy expenditure is higher with multi-joint exercise compared to single-joint exercise [2]
• Whether the exercise is bilateral or unilateral and loaded accordingly
• Explosive versus slow contractions [3]

Distance travelled

200 strict kettlebell presses that travelled 60 centimeters instead of 45 centimeters means a difference of 3,000 centimeters less. That is 30 meters less on a total distance of 120 meters — 1/4 of the total, which becomes a considerable variable.

References

• Energy metabolism in human obesity — pubmed.ncbi.nlm.nih.gov/2750332
• Does the number of joints involved in exercise promote changes in energy expenditure? — scielo.br
• Effect of explosive versus slow contractions and exercise intensity on energy expenditure — pubmed.ncbi.nlm.nih.gov/17762362