09/21/2024
🦵Muscle Activity in Single Leg Strength Exercises
Let's see what muscles are working and when.
Muyor et al (2020) completed a study on muscle activity of primary muscles in the hip and thigh during 3 common single leg strength exercises: monopodal (single leg squat), forward lunge, and lateral step up. They assessed the activity of 6 major muscle groups of the hip and leg: Gluteus maximus, gluteus medius, biceps femoris (hamstrings), and 3 parts of the quadriceps, vastus medialis, vastus lateralis, and re**us femoris.
Here are their primary findings:
1️⃣ The monopodal (single leg) squat had significantly greater muscle activity in majority of the muscles (excluding re**us femoris) compared to the lunge and step up.
2️⃣ With each exercise, muscle activity in the concentric phase was significantly greater than in the eccentric phase of movement.
3️⃣ Every exercise showed greatest muscle activity in the vastus medialis and lateralis, followed by glute max and med, then re**us femoris.
These findings help clinicians and athletes alike to determine which exercise might be most beneficial for their goals.
While the study only assessed muscle activity at 5 repetitions of 60% (5 rep max) in 20 healthy and physically active participants, the findings are still helpful to guide training and programming decisions.
https://doi.org/10.1371/journal.pone.0230841
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