In the midstance example, which pair of events occurs on opposite sides?

In the midstance example, which pair of events occurs on opposite sides?

• A. Left toe off and right heel lift
• B. Right toe off and left heel lift
• C. Left heel strike and right toe off
• D. Right heel strike and left toe off

Answer: (A)

In midstance, the weight is carried by one leg while the opposite leg is preparing to move forward, so the events that mark progression occur on opposite sides. As the stance leg nears its end, its toe-off signal happens, while at that same moment the opposite leg’s heel is lifting to transition toward its own swing. This contralateral timing—left toe-off paired with right heel lift—shows how the legs alternate roles to propel the body forward. Other pairings would place events at times that don’t align with midstance’s opposite-side coordination, so they don’t reflect the typical contralateral timing seen in this phase.

In midstance, the weight is carried by one leg while the opposite leg is preparing to move forward, so the events that mark progression occur on opposite sides. As the stance leg nears its end, its toe-off signal happens, while at that same moment the opposite leg’s heel is lifting to transition toward its own swing. This contralateral timing—left toe-off paired with right heel lift—shows how the legs alternate roles to propel the body forward.

Other pairings would place events at times that don’t align with midstance’s opposite-side coordination, so they don’t reflect the typical contralateral timing seen in this phase.