A thread on optimizing rowing mechanics for maximizing muscle recruitment & shoulder health
The upper body pull is a staple of most programs.
Depending on the goal, there are a few mechanical factors to consider:
✅Angle of arm
✅Line of pull
✅Targeted muscles
In order to...
illustrate my point, I am going to be discussing primarily horizontal rowing variations.
The first distinction that needs to be made is: What is the most optimal rowing form to target the prime movers (big, meaty muscles that do the most work) of the exercise?
SCAPULAR RETRACTION VS HUMERAL EXTENSION
“Shoulders back & down” has forever been a cue on rows.
It’s not a bad cue, but if we initiate the row by pulling the shoulder blades (scapula) back, we are taking the scapula to the end-range position of a row right at the beginning of
the movement.
The scapula are designed to have synchronized movement with the arm (humerus) in order to stabilize the movement of the humerus, especially under load.
Pulling the scapula back first disrupts that rhythm and forces smaller muscles like the rotator cuff to take
over for a lack of scapulohumeral rhythm.
Instead, for most peoples’ goals, initiating rows with “humeral extension” is more ideal.
This involves initiating the movement with “elbows back” and a closer relative angle of the humerus to the trunk.
This allows the scapula to
stabilize the humeral movement while having the freedom to glide on the back ribs without restriction.
This also involves starting the shoulders in a slightly protracted state.
Notice how I “reach” the arms forward slightly at the end of each rep and let the scapula come a
little bit forward. This is the opposite scapula movement in a row which stretches the prime movers in of that row.
In order for a muscle to optimally contract, it needs to stretch first.
This is basic muscle anatomy 101 and another reason why we don’t want to put those
muscles in an end-range position with the scapula right away.
You may be wondering, does this apply to vertical pulling movements like pull-ups?
Thanks to the image below by Neumann, 2010, we can see the answer is yes.
The prime movers of a horizontal row are:
✅Lats
✅Rhomboids
✅Traps
Those muscles are the most powerful extensors, retractors, and pullers of the upper body.
It would make sense to train them through a full range of motion rather than push them into an end-range position &
than stress the smaller, stabilizing muscles of the rotator cuff and other surrounding muscles.
There are certain contexts for using more humeral abduction (higher elbow height) in a row. I am not saying that is bad.
But what I am saying is that the cues we choose matter for performance & health.
Cues for humeral extension:
✅Get protraction (reach) at the end of each rep
✅Initiate the movement with “elbows back” rather than shoulders back
✅”Keep shoulders out of ears”
I want to thank Kassem Hanson and Ben Yanes as people who have influenced my thinking on this.
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A thread on common compensations during running & gait mechanics + what we can do to improve them
The body tends to self-organize to find what it is lacking.
A common foot action we see in running is a “heel whip”, where the heel excessively turns outward during toe-off...
When we toe-off, the glute max helps push us forward via contact with the big toe and inside foot arch.
Upon toe-off, the tibia (lower leg) externally rotates (turns out), which allows the foot arch to rise and sets us up for swinging the leg through afterwards.
If you see a tibia (lower leg) that's excessively rotated outward, it could be a foot trying to find a pronation strategy and internal rotation due to a leg and/or pelvis that's biased towards external rotation.
This can apply to both standing, walking, and running.
A thread on hip flexors - common myths, why they’re important, and how strengthen or release them
Hip flexors might be the most unfairly demonized group of muscles in the human body.
My goal is to dispel myths while also giving you better options to “release” them...
Hip flexors are like any other muscles - the adapt to the demands imposed on them.
If those demands are only:
- Sitting
- Squatting without full hip extension
- No single leg work
What do you think is going to happen?
It is important to consider that muscle length is secondary to skeletal position.
For example, if I tip my pelvis forward, my hip flexors are naturally in a shortened position, while my glutes and hamstrings are in a lengthened position.
A thread on Box Squats & their use for improving pelvic mechanics, a squat pattern, & force output
Box squats are often used as a means to improve squat strength.
In addition to that, a deeper look into the biomechanics can help us appreciate contextual application of them...
The first thing to consider is that box squats usually stop at ~90 degrees of hip flexion, which is associated with high degrees of internal rotation of the hips.
At this point, the sacrum bone tips forward and the pelvic bones rotate inward for femurs (leg bones) to pick up
room to move back into internal rotation.
This is necessary for producing force through the sticking point of a squat.
When someone is lacking proper internal rotation of the hips, you’ll often see them push their hips forward and arch their low back.
A thread on the biomechanics of hip extension & how to train it
If you want to:
- Stand upright
- Sprint
- Train your glutes & hamstrings properly
You want to have hip extension. Problem is, majority of people & athletes don’t fully have it.
The reason why it’s often..
missing is for a few common reasons:
- Sitting too much: Sitting is hip flexion and the body will adapt to the demands placed on it
- Not training through a full range of motion. Ending your squats and deadlifts with your butt out means you’re not in full hip extension
You’ll commonly see people who don’t have full hip extension stand in an Anterior Pelvic Tilt.
I think we know this tightens the hip flexors and back extensors, but it also tightens & restricts ligaments of the hips like the iliofemoral ligament.