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Optimizing ground reaction forces in the golf swing isn’t just about HOW HARD a golfer pushes against the ground, but HOW they push (timing and direction). One of the key kinetic variables we consider in a force analysis is called anterior-posterior force (or heel-toe force). Think of a golfer... pushing frictionally against the ground, towards the target line with their lead leg and away from the target line with their trail leg. AP force is not only a meaningful contributor to clubhead speed, it also has a strong relationship to early extension. In order to prevent the pelvis from moving closer to the target line on the downswing, the lead leg needs to push considerably harder than the trail leg to drive the hip back (we often see over 2X AP force on the lead side vs the trail side in elite ball-strikers). As Newton outlines in his 3rd law, “for every action there is an equal and opposite reaction.” In the case of this PGA TOUR player, the trail leg was pushing equal to the lead leg, resulting in him early extending.show more

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TPI1 yıl önce

Here’s @blackburngolf explaining the importance of AP force and its influence on speed, posture and ball striking. One of the best communicators in golf.

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Bubba’s Caddie1 yıl önce

I notice most (if not all) tour pros have most of their weight on the outside of the lead foot which I’m guessing is a result of what you’re talking about. Can you explain what’s going on here? Looks like his weight is on the inside of his lead foot. But you’ll be hard pressed to find a (just turned) 7 year old hitting a 50° wedge like this so I don’t know what to think of it.

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A golfer’s ability to use the ground effectively is critical for maintaining dynamic posture and avoiding swing characteristics like early extension. In order to prevent the pelvis from moving closer to the target line on the downswing, golfers must push aggressively against the ground with their lead leg, both down (vertical force) and away (anterior-posterior force). One of our favorite strategies for helping a golfer develop a feel of creating these forces is a series of medical ball throws. By cueing athletes to focus on the timing and direction of their ground reaction forces, we can teach them to “use their legs to drive their arms” and avoid thrusting towards the ball. Full video on Titleist’s YouTube channel

A golfer’s ability to use the ground effectively is critical for maintaining dynamic posture and avoiding swing characteristics like early extension. In order to prevent the pelvis from moving closer to the target line on the downswing, golfers must push aggressively against the ground with their lead leg, both down (vertical force) and away (anterior-posterior force). One of our favorite strategies for helping a golfer develop a feel of creating these forces is a series of medical ball throws. By cueing athletes to focus on the timing and direction of their ground reaction forces, we can teach them to “use their legs to drive their arms” and avoid thrusting towards the ball. Full video on Titleist’s YouTube channel

TPI

33,912 görüntüleme • 1 yıl önce

The biggest takeaway from this skeletal throwing depiction is the amount of force the thrower puts into the ground w/the lead leg. Notice how the leg stiffens & pushes back to 2B. It serves to decelerate the pelvis & transfer force up the chain. It becomes an arm speed enhancer.

The biggest takeaway from this skeletal throwing depiction is the amount of force the thrower puts into the ground w/the lead leg. Notice how the leg stiffens & pushes back to 2B. It serves to decelerate the pelvis & transfer force up the chain. It becomes an arm speed enhancer.

Jerry Weinstein

45,843 görüntüleme • 2 yıl önce

When we saw Wyndham Clark in 2025, he was sliding excessively towards the target on the downswing with his irons. One of our favorite drills for helping golfers eliminate slide is lead leg only swings. By removing the trail leg, the golfer is forced to stabilize and rotate over their lead side rather than slide past it. Any excess lateral movement is amplified immediately, so the body starts to learn to post up and turn around a firm front side. The payoff is a more stable low point and more consistent contact with the irons.

When we saw Wyndham Clark in 2025, he was sliding excessively towards the target on the downswing with his irons. One of our favorite drills for helping golfers eliminate slide is lead leg only swings. By removing the trail leg, the golfer is forced to stabilize and rotate over their lead side rather than slide past it. Any excess lateral movement is amplified immediately, so the body starts to learn to post up and turn around a firm front side. The payoff is a more stable low point and more consistent contact with the irons.

TPI

52,584 görüntüleme • 2 ay önce

Total torque has one of the strongest correlations to clubhead speed of any kinetic variable in our database. Since torque is a product of force and moment arm, we can increase torque in the golf swing by either pushing against the ground with more force or pushing further away from the center of rotation. Think about pushing a heavy door open. The further you push from the hinges, the easier it is to move the door. You’ve increased the “moment arm.” Increasing force is a gym intervention. Increasing moment arm is coaching intervention.

Total torque has one of the strongest correlations to clubhead speed of any kinetic variable in our database. Since torque is a product of force and moment arm, we can increase torque in the golf swing by either pushing against the ground with more force or pushing further away from the center of rotation. Think about pushing a heavy door open. The further you push from the hinges, the easier it is to move the door. You’ve increased the “moment arm.” Increasing force is a gym intervention. Increasing moment arm is coaching intervention.

TPI

15,838 görüntüleme • 1 yıl önce

Many amateurs wait until the top of the backswing to initiate the downswing. Elite players do not. When we look at force plate data from the best ball strikers in the world, the majority begin pushing against the ground well before the backswing is complete. These ground reaction forces help decelerate the pelvis so the player can lead with the lower body on the downswing. Force precedes motion. New video on our YouTube channel. Link below

Many amateurs wait until the top of the backswing to initiate the downswing. Elite players do not. When we look at force plate data from the best ball strikers in the world, the majority begin pushing against the ground well before the backswing is complete. These ground reaction forces help decelerate the pelvis so the player can lead with the lower body on the downswing. Force precedes motion. New video on our YouTube channel. Link below

TPI

23,561 görüntüleme • 2 ay önce

How does waterskiing explain why early extension can prevent a golfer from reaching their ball speed potential? Think of a relationship between a ski boat and a skier. If the boat turns “away” from the skier, the skier accelerates. If the boat turns towards the skier, it creates slack in the rope and the skier slows down. If a golfer is thrusting excessively towards the target line, it may promote “slack” in the line. Many of the most powerful golfers in the world are actually moving away on the downswing, helping to accelerate the club.

How does waterskiing explain why early extension can prevent a golfer from reaching their ball speed potential? Think of a relationship between a ski boat and a skier. If the boat turns “away” from the skier, the skier accelerates. If the boat turns towards the skier, it creates slack in the rope and the skier slows down. If a golfer is thrusting excessively towards the target line, it may promote “slack” in the line. Many of the most powerful golfers in the world are actually moving away on the downswing, helping to accelerate the club.

TPI

24,364 görüntüleme • 9 ay önce

We like to see golfers make a lateral weight shift towards the target in transition, but Hikers tend to launch their trail hip vertically instead. It not only can cause issues with path and plane, but can put additional stress on their lower back. Here’s a look into the ground reaction force data we see from a Hiker. Full breakdown of the new Hiking swing characteristic, including a free preview of the updated Level 1 course:

We like to see golfers make a lateral weight shift towards the target in transition, but Hikers tend to launch their trail hip vertically instead. It not only can cause issues with path and plane, but can put additional stress on their lower back. Here’s a look into the ground reaction force data we see from a Hiker. Full breakdown of the new Hiking swing characteristic, including a free preview of the updated Level 1 course:

TPI

30,366 görüntüleme • 2 yıl önce

Fix the lead leg by not focusing on the lead leg?🤨⁠ ⁠ The block is a natural byproduct of rotation.⁠ ⁠ In general, working to improve a poor lead leg should focus on addressing rotation, thus indirectly improving the block.⁠

Fix the lead leg by not focusing on the lead leg?🤨⁠ ⁠ The block is a natural byproduct of rotation.⁠ ⁠ In general, working to improve a poor lead leg should focus on addressing rotation, thus indirectly improving the block.⁠

Tread Athletics

54,064 görüntüleme • 1 yıl önce

How to Create Rotation With the Back Leg How you want to actually create rotation with the back leg. For me and higher level guys, I don’t even like to think about rotation. If you feel your hips rotating, it’s probably too slow. This is such a violent, explosive movement that happens in milliseconds. You shouldn’t even be able to feel it. That’s why I think about it as a weight shift. When you’re putting force into the ground, into that X direction, most of your weight is on the back leg. Then once you create that impulse and it propels you forward, all you need to think about is getting to the front leg. That force naturally rotates the hips into foot plant. For a lot of higher level guys, this helps a lot. They don’t have to think about rotating the hips. Because that can actually mess things up. Instead, it’s just force into the ground and get to the front leg. The pelvis will rotate on its own.

How to Create Rotation With the Back Leg How you want to actually create rotation with the back leg. For me and higher level guys, I don’t even like to think about rotation. If you feel your hips rotating, it’s probably too slow. This is such a violent, explosive movement that happens in milliseconds. You shouldn’t even be able to feel it. That’s why I think about it as a weight shift. When you’re putting force into the ground, into that X direction, most of your weight is on the back leg. Then once you create that impulse and it propels you forward, all you need to think about is getting to the front leg. That force naturally rotates the hips into foot plant. For a lot of higher level guys, this helps a lot. They don’t have to think about rotating the hips. Because that can actually mess things up. Instead, it’s just force into the ground and get to the front leg. The pelvis will rotate on its own.

Josh Gessner

14,028 görüntüleme • 5 ay önce

Staggered Romanian Deadlift might be superior to single leg RDL. Heavy staggered RDL’s are a quasi-unilateral option that reduces some of the problems of the often-challenging single leg RDL. Much like single leg squatting, the single leg RDL is limited by the athlete’s ability to maintain stability which in turn robs us of meaningful force production or overload, which is tricky with the contralateral brace required and bar’s movement. To overcome this problem, I started using the staggered RDL. Take a small step into a staggered stance, with both knees unlocked, and use the rear leg to stabilize–either on the ball of the foot or with the foot flat on the floor. It’s quicker to master load and advance than SLRDL. With the heavy staggered RDL, the target of the movement will be the lead leg which has the greatest stretch. Here with ProGolfer Borja Virto ETPI

Staggered Romanian Deadlift might be superior to single leg RDL. Heavy staggered RDL’s are a quasi-unilateral option that reduces some of the problems of the often-challenging single leg RDL. Much like single leg squatting, the single leg RDL is limited by the athlete’s ability to maintain stability which in turn robs us of meaningful force production or overload, which is tricky with the contralateral brace required and bar’s movement. To overcome this problem, I started using the staggered RDL. Take a small step into a staggered stance, with both knees unlocked, and use the rear leg to stabilize–either on the ball of the foot or with the foot flat on the floor. It’s quicker to master load and advance than SLRDL. With the heavy staggered RDL, the target of the movement will be the lead leg which has the greatest stretch. Here with ProGolfer Borja Virto ETPI

Coach Wayland | Performance Expert | Craftsman

37,506 görüntüleme • 1 yıl önce

Can a person have an alien leg? YES. Limb levitation in corticobasal syndrome is something we see commonly in an expert clinic. This video and report shows involuntary movements of the right leg “alien leg”. In order for the patient to stand up the doctor had to stand on his right foot to hold it in place. The ‘‘alien foot’’ is rarer and the authors point out that foot involvement can lead to erroneous localization of the clinical problem to the knee, hip, or back.''

Can a person have an alien leg? YES. Limb levitation in corticobasal syndrome is something we see commonly in an expert clinic. This video and report shows involuntary movements of the right leg “alien leg”. In order for the patient to stand up the doctor had to stand on his right foot to hold it in place. The ‘‘alien foot’’ is rarer and the authors point out that foot involvement can lead to erroneous localization of the clinical problem to the knee, hip, or back.''

Michael Okun

19,519 görüntüleme • 2 yıl önce

The lead leg has a critical role in accelerating and decelerating the pelvis.⁠ ⁠ The outer glute being able to powerfully stick this pelvic decel is an overlooked key to a good block.⁠ ⁠ Build a monster lead leg glute med.⁠ ⁠ Here's one way to overload & train that.⁠

The lead leg has a critical role in accelerating and decelerating the pelvis.⁠ ⁠ The outer glute being able to powerfully stick this pelvic decel is an overlooked key to a good block.⁠ ⁠ Build a monster lead leg glute med.⁠ ⁠ Here's one way to overload & train that.⁠

Tread Athletics

51,040 görüntüleme • 1 yıl önce

Hip rotation is one of the primary drivers of velocity during the throw. Both speed and timing of rotation matter. The goal is to have the hips rotate out in front of the torso. Ideally, you want rotation to begin quickly after the front foot strikes the ground. The speed of rotation is also critical. I strive for all QBs that I work with to be 800+ deg/sec with hip rotation speed. One key thing is to not mistake “sliding” for rotating. Many will push and slide their hips forward as opposed to rotating against a stable lead leg.

Hip rotation is one of the primary drivers of velocity during the throw. Both speed and timing of rotation matter. The goal is to have the hips rotate out in front of the torso. Ideally, you want rotation to begin quickly after the front foot strikes the ground. The speed of rotation is also critical. I strive for all QBs that I work with to be 800+ deg/sec with hip rotation speed. One key thing is to not mistake “sliding” for rotating. Many will push and slide their hips forward as opposed to rotating against a stable lead leg.

Joe Mohr

12,648 görüntüleme • 4 ay önce

Building a firm front side with Wyndham Clark. When we assessed Wyndham last year, 3D and GRF data showed that his lead side was soft in the downswing with his irons. This caused him to drift toward the target rather than post up and drive his arms. While changes will ultimately be made with a club in his hand, we like to incorporate exercises in the gym that reinforce the feel we are chasing. An overhead medicine ball throw can introduce how “the foot connects to the hand” in that the push from the ground helps accelerate the ball. The legs lead, and the power follows. From there we move to a side-toss into the wall, training a firm, athletic lead foot. That’s the feel we want to encourage in his iron swing. Full video of our session with Wyndham on our YouTube channel.

Building a firm front side with Wyndham Clark. When we assessed Wyndham last year, 3D and GRF data showed that his lead side was soft in the downswing with his irons. This caused him to drift toward the target rather than post up and drive his arms. While changes will ultimately be made with a club in his hand, we like to incorporate exercises in the gym that reinforce the feel we are chasing. An overhead medicine ball throw can introduce how “the foot connects to the hand” in that the push from the ground helps accelerate the ball. The legs lead, and the power follows. From there we move to a side-toss into the wall, training a firm, athletic lead foot. That’s the feel we want to encourage in his iron swing. Full video of our session with Wyndham on our YouTube channel.

TPI

42,814 görüntüleme • 2 ay önce

Stop Pushing With Your Back Leg As I trained to throw harder, I thought I needed to create a ton of momentum down the mound and really push off the rubber. That was actually holding me back from gaining pitching velocity for a couple reasons. The first reason was that pushing made it really hard for my pelvis to fire because it put me in a worse position instead of a better one. When I was pushing, it also made me fly open. The fix was thinking about keeping everything back and letting the pelvis rotate instead of pushing with my back leg. Most of your linear momentum comes from the drift and the drop in your delivery and the back leg. The back leg does have a role in building linear momentum, but its more important role is putting you in a good position to rotate. To create separation between your pelvis and your rib cage. That separation is what gives you true hip to shoulder separation that you can actually fire from.

Stop Pushing With Your Back Leg As I trained to throw harder, I thought I needed to create a ton of momentum down the mound and really push off the rubber. That was actually holding me back from gaining pitching velocity for a couple reasons. The first reason was that pushing made it really hard for my pelvis to fire because it put me in a worse position instead of a better one. When I was pushing, it also made me fly open. The fix was thinking about keeping everything back and letting the pelvis rotate instead of pushing with my back leg. Most of your linear momentum comes from the drift and the drop in your delivery and the back leg. The back leg does have a role in building linear momentum, but its more important role is putting you in a good position to rotate. To create separation between your pelvis and your rib cage. That separation is what gives you true hip to shoulder separation that you can actually fire from.

Josh Gessner

37,682 görüntüleme • 7 ay önce

What’s the best way to load into your back leg. When I threw 95, I tried to get as deep as possible and load into my back leg as much as I could. The way I got to 98 was by speeding up the drop and getting into my back leg as quickly as possible. As I’m training to throw a hundred miles an hour, I’m starting to think about it differently. Instead of dropping into my back leg and getting as deep as possible, I like to feel more of an impulse. I’m putting force into the ground and the ground pushes back and gives me a burst of energy toward the plate. Studies have shown that the guys with the best impulse from their back leg throw the hardest. That means putting the most force into the ground for the longest amount of time. When you see this, you get guys like Shane McLanahan, Misiorowski, and Strider who look like they’re almost jumping down the mound. They’re really just putting so much force into the ground that it propels them forward. The key for me is I don’t want to put force into the ground by tensing up. I don’t want it to feel like a single leg squat. It should feel more like a max effort jump. The quicker I go down, the higher I’m able to jump. That lets me take better advantage of the stretch shortening cycle and improve my impulse.

What’s the best way to load into your back leg. When I threw 95, I tried to get as deep as possible and load into my back leg as much as I could. The way I got to 98 was by speeding up the drop and getting into my back leg as quickly as possible. As I’m training to throw a hundred miles an hour, I’m starting to think about it differently. Instead of dropping into my back leg and getting as deep as possible, I like to feel more of an impulse. I’m putting force into the ground and the ground pushes back and gives me a burst of energy toward the plate. Studies have shown that the guys with the best impulse from their back leg throw the hardest. That means putting the most force into the ground for the longest amount of time. When you see this, you get guys like Shane McLanahan, Misiorowski, and Strider who look like they’re almost jumping down the mound. They’re really just putting so much force into the ground that it propels them forward. The key for me is I don’t want to put force into the ground by tensing up. I don’t want it to feel like a single leg squat. It should feel more like a max effort jump. The quicker I go down, the higher I’m able to jump. That lets me take better advantage of the stretch shortening cycle and improve my impulse.

Josh Gessner

18,301 görüntüleme • 7 ay önce

Teaching golfers to generate ground reaction forces earlier in the downswing is critical for helping them maximize the potential horsepower from their lower body. This “golf vertical jump” progression is one of our favorite strategies to help golfers develop a feeling of their legs driving their arms. The goal is not to train physical capacity, but to build an awareness of how and when to push against the ground in the downswing. Full video on Titleist’s YouTube channel.

Teaching golfers to generate ground reaction forces earlier in the downswing is critical for helping them maximize the potential horsepower from their lower body. This “golf vertical jump” progression is one of our favorite strategies to help golfers develop a feeling of their legs driving their arms. The goal is not to train physical capacity, but to build an awareness of how and when to push against the ground in the downswing. Full video on Titleist’s YouTube channel.

TPI

51,074 görüntüleme • 1 yıl önce