Standing Knee Raise

Move · Resistance Training · Movement, Typed Supps

The hard part is the last few inches above waist height, where the muscle pulling the knee up is at its shortest and weakest.

Stage by stage

Set-up (Two demands at once): The moving hip flexes while the stance hip's abductors work isometrically to prevent contralateral pelvic drop.
Through the range (Force falls past ninety degrees): Iliopsoas and rectus femoris shorten as the hip flexes, so the top of the range is the hardest and the part actually trained.
Watch for (Trunk lean substitutes): Leaning back uses lumbar extension to gain apparent height without additional hip flexion, removing the stimulus.
Weeks later (Progression needs load): Bodyweight repetitions plateau quickly; ankle bands or a held weight convert it from a control drill into strength work.

Muscles trained

Primary: hip flexors
Secondary: abs, hip abductors

Intensity

3.5 METs (Resistance (weight) training, multiple exercises, 8-15 repetitions at varied resistance).

Time to effect

Weeks: Balance on the standing leg tends to improve noticeably within the first couple of weeks, often faster than strength in the working hip.
Months: Higher, more controlled knee drive tends to carry over to activities like running and stair climbing, where hip flexor strength and balance both matter.

Common myth

"This is too easy to count as real training." In reality: Adding a resistance band around the ankle or holding a weight turns this into a genuinely challenging hip flexor and balance exercise — the bodyweight version is simply the entry point.