Order or force

Watch a long hitter in golf or a long thrower in disc golf and the motion looks easy. The hips turn, the body unwinds, and the club or the disc leaves at a speed that seems out of proportion to the effort. A common explanation in both sports is that distance comes from sequencing rather than strength: a chain of body segments firing in the right order, each passing its speed to the next, so that timing beats muscle.

It is a good explanation, and in golf, where it has been tested most, the measurements mostly point somewhere else. What instruments reliably find is that faster swingers are stronger and, above all, more explosive. The sequence remains a well-accepted principle that researchers have struggled to confirm. And in disc golf, the mechanics the comparison depends on have barely been measured at all.

The idea comes from throwing sports generally. In javelin, handball or baseball, the aim is to make the last link of a chain move as fast as possible, and the pattern considered optimal is proximal-to-distal: the largest, slowest segments near the body's centre reach their peak speed first, and each segment farther out peaks later.¹ The reasoning, called the principle of temporal additivity of velocities, is that a distal segment's speed builds on the motion of the segments behind it, so their peaks should arrive in order.¹ Applied to golf, that means pelvis, then torso, then arms, then club.¹ As physics it is close to a necessity for any chain: a hand that peaks before the torso has stopped contributing cannot be riding on the torso's speed.

What golf measurements show

A 2022 systematic review of golf swing kinematics by Maxime Bourgain and colleagues went through the studies that tried to measure the sequence. Its verdict is that the sequence "is well-accepted for maximizing the clubhead speed at impact" but in golf "has rarely been verified."¹ Some studies found it in professional and skilled amateur golfers. Others did not observe it in recreational golfers or in highly skilled amateurs.¹

Part of the reason is measurement. The downswing takes about 0.3 seconds, and the timing differences between segment peaks reported in one study ranged from 4 to 56 milliseconds, values the reviewers note may be very close to or below that study's measurement accuracy.¹ The same authors had shown earlier that the computed sequence changes depending on which calculation method is applied to the same recording.¹ A principle defined by the order of events a few hundredths of a second apart is hard to see with instruments that cannot separate them reliably.

Strength, by contrast, is easy to measure, and it has been measured a great deal. A 2024 meta-analysis by Alex Brennan and colleagues pooled 20 studies relating physical tests to driver clubhead speed. Speed was associated with lower-body strength, upper-body strength and body size, and most strongly with jump impulse, a measure of how much force a player can push into the ground over the brief time of a jump.² Upper-body explosive strength showed noticeably larger associations than upper-body maximal strength, and flexibility and balance showed none.²

These are correlations from cross-sectional studies. They do not show that getting stronger makes a golfer swing faster; the authors of a 2026 study of elite golfers, for example, state that their design allowed no causal inferences of that kind.³ Several authors of the meta-analysis work for golf bodies such as The R&A and the European Tour's health and performance institute, organisations that promote fitness for players.² Neither point erases the pattern. On the evidence available, the measurements have not confirmed that timing beats muscle in golf, and what they have found points to strength and power.

Force in time

The meta-analysis contains a detail that softens the opposition. What predicted clubhead speed best was not how much force a golfer could produce eventually but how much they could produce quickly: jump impulse and explosive strength, rather than one-repetition maxima.²

That suggests a hypothesis the evidence here does not test. Producing force quickly may itself be partly a coordination skill, a matter of recruiting muscle in a short window and applying it in the right direction at the right moment. If so, the old opposition between strength and sequencing is partly false: a jump test and a golf swing both ask the body to deliver a large force in a fraction of a second, and players who are good at one may be good at the other for some of the same reasons. What the evidence does say is narrower. Timing has not been shown to be irrelevant, but the timing measured most successfully is timing inside the production of force, not the order of segment peaks.

The throw nobody has measured

Disc golf is where the comparison should be most interesting, because a disc thrower has no club to lengthen the lever and must create speed with the body and arm alone. It is also where the evidence nearly runs out.

The most detailed full-text biomechanical analysis of a backhand disc throw that could be found is a 2003 master's thesis by Sarah Ann Hummel. It modelled the torso and throwing arm of one experienced thrower using an Ultimate disc, not a disc golf driver, at 57% of maximal effort, and did not include the legs.⁴ In that model, horizontal adduction of the shoulder, swinging the arm across the chest, did nearly all the work that increased the disc's speed, and the segments behaved as a kinetic chain; the elbow never fully straightened.⁴ Hummel notes that the results come from a single thrower.⁴

That is not enough to say how elite disc golfers generate speed, whether their segments peak in proximal-to-distal order, or how much of their distance comes from the run-up and legs that the model left out. The "hidden mechanics" of the original question are, for disc golf, still hidden.

A golfer who takes up disc golf, or the reverse, can carry over one finding with some confidence: in golf, the measurable route to speed runs through explosive force, the ability to push hard and fast from the ground.² Whether the same holds for a disc throw is unknown. It is the hypothesis the golf evidence suggests, and unlike the sequence it can be checked with equipment most clubs could borrow: a jump test and a radar gun.