Power Is the First Thing You Lose. Your Broad Jump Measures It.
Written by Nick Arapis, Director of Operations
A two-second test that reads a system your bloodwork can't see, and what your number actually means.
If you watched the short, you already know the question: can you jump the length of your own height? It takes two seconds, no equipment, and it tells you something a blood panel never will. Your bloodwork can show you a lipid number or a glucose trend. It cannot tell you how much power your body still produces. Your broad jump can.
Here is why that matters, and what to do with the number once you have it.
Strength and power are not the same thing
Three qualities get blurred together all the time. Strength is the ability to produce force. Muscle is the tissue that produces it. Power is the ability to produce force quickly. They are related, but they decline on different schedules, and that difference is the whole point.
After your 30s you lose all three. But power drops off faster, often close to twice the rate of maximal strength. A heavy, slow deadlift is strength. Catching yourself when you trip, climbing a flight of stairs without thinking, crossing a street before the light changes: those are power.
The reason is in the tissue. Explosive movement runs disproportionately on fast-twitch (Type II) muscle fibers and on your nervous system's ability to recruit them fast. Those are the fibers that atrophy first and fastest with age, and the rapid neural drive that fires them fades alongside them. Strength loss is partly maskable; you can grind out a slow rep. Power loss is not. The system either fires fast or it doesn't.
Almost every capacity that protects your independence later in life is a power task, not a strength task. When you trip, you have a fraction of a second to get a foot down and catch yourself. Getting off the floor, recovering from a stumble, taking stairs at speed: all of it depends on producing force quickly, not just producing a lot of it slowly.
That is why power, despite being the most neglected quality in most training programs, is one of the most important to defend. Its loss is a quiet driver of the Lost Decade, the years of functional life surrendered to preventable decline. Power is the buffer between staying independent and losing the margin. And because it fades first, it is the earliest signal that the margin is starting to shrink.
How to test it: the standing broad jump
The broad jump is the simplest field test of lower-body power you can run without a gym. Done right, it measures two things: how much power you produce on takeoff, and how well you control it on landing.
Warm up first. This is a maximal, explosive effort. Do not test it cold.
Stand with your feet about hip-width apart, toes behind a marked line.
Swing your arms back, hinge at the hips, and load.
Drive forward and jump as far as you can.
Stick the landing on both feet, under control. No stumble, no extra step.
Measure from the start line to the back of your heels. Take the best of three attempts.
The landing is not a formality. It measures balance, deceleration, and joint control: the ability to absorb force, not just create it. A big jump you cannot stick is an incomplete result. Power you cannot control is power you cannot use safely.
One caveat. If you are deconditioned, coming back from injury, or unsure of your mechanics, build a base before you test at full output, or run it under a coach's eye. Jumping is high-intent work, and the point is information, not a tweaked ankle.
The rough benchmark from the short is a useful first gut-check: can you jump roughly the length of your own height? Plenty of healthy adults clear it. Plenty do not, and that is worth knowing.
Here is the part that matters most, and it is the same logic we run inside the clinic. A field test like the broad jump is excellent for tracking your own change and far less precise as a one-time diagnosis. It is a benchmark, not a clinical threshold. In a Gateway Day assessment we measure power and movement quality with more precise, age- and sex-adjusted instruments. The at-home broad jump is the simpler cousin of that work, and its real value is the trend. Is your number holding or improving year over year, or quietly slipping? That direction tells you more than any single jump.
A measurement you never repeat is trivia. A measurement you track is a feedback loop.
In the Optispan framework this sits in the Move pillar and the functional layer of how we read the body, and it runs on the same operating loop as everything we do: Measure, Intervene, Retest. Power is trainable at any age. The decline is a default, not a sentence, and a modest amount of the right work reverses a surprising amount of it.
We reason about every program in the same order: objective, then strategy, then tactics.
Objective. Preserve and rebuild the ability to produce force quickly.
Strategy. Train explosive intent on top of a real strength base. You cannot express power you do not have, so you build force capacity first, then train the speed of producing it. Movement competency comes before load, and load comes before intensity, because connective tissue adapts more slowly than muscle.
Tactics, progressed in order:
Build the base. Squats, hinges, lunges, carries. This is the raw force that power is built from.
Add speed-strength. Move moderate loads with maximal intent: kettlebell swings, medicine ball throws, jump squats.
Layer in plyometrics, conservatively. Start low with pogo hops and low box step-offs before any higher-impact work, and yes, broad jumps themselves. Train the landing as deliberately as the takeoff.
Two short, crisp sessions a week is enough to move this number. Power work rewards quality, not fatigue: rested, sharp efforts, clean mechanics, full recovery between attempts. The goal is a more reactive system, not a sore one.
Strength keeps you upright. Power keeps you reacting. Power is the first thing you lose, which makes it the first thing worth measuring.
So measure it this week. Train it. Retest in eight to twelve weeks and watch where the line is going. That loop, run consistently, is how you defend your Healthspan: the high-functioning years, held high instead of hoped for.