STRONGER AFTER 55: Reaction Speed Is an Undertrained Longevity Skill

BIG ISSUE 

As we age, our bodies change the way it functions on multiple levels – including our neurological and physical systems. Falls tend to be the number one cause of fragility induced injuries many older adults face today, according to reported cases. These injuries reflect our bodies' need for strength and endurance, not only within our bones, but in our own brain. In earlier issues, we’ve discussed the importance of balance in diet and muscle training in building strength. Yet no matter how many workouts you attend a week, how many pounds you lift, and how much protein you consume, the key factor to developing strength isn’t the components that build it – but the balance that sustains it. 

The key component we’re missing? Reaction Speed. 

No, not how fast we run or how intensely we walk. Reaction speed turns out to be a strong neurological component that determines our cognitive health, and acts as a protective barrier to measure our strength and resistance to falls. It still remains as one of the most overlooked and underestimated components of preventative medicine. 

Fatal injuries are what limit our independence as we age, and that is one factor everyone should have a right to throughout their lives. We may not be able to avoid them with certainty, but we can certainly learn how to best prevent them. 

Here's How: 

THE EVIDENCE 

Recent clinical studies indicate that a lower risk of falls is associated with higher reaction speed, according to literature published by the National Institute of Health. This is largely due to the fact that the faster reaction speed one has, the more likelihood of being able to prevent falls and the fatality of them, as compared to individuals with relatively slower reaction time. Reaction speed hence provides a correlation between fall incidence, and is a heavy predictor of them. 

Many mistakenly believe that reaction speed is something that is an “innate” quality. One primary way we can improve our responsiveness and build this endurance throughout the years is by power training. Power training involves combatting the degradation of Type II fast-twitch muscle fibers, which are key components used  in quick muscle movements. Typically lost in aging, the speed of neural signal transmission can be sustained, strengthened, and developed through the combination of muscle strength with speed and force factors that power training provides. The speed component is what builds muscle strength while boosting velocity and movement overall, helping increase inherent reaction speed that can be beneficial in fall prevention and their fatality. 

IMPACT 

According to statistics reported by the Center for Disease Control (CDC), medical costs from preventable falls cost adults older than 65 over $80 billion dollars annually within the U.S. It is one of the leading factors behind why retirement savings are instead being spent covering medical expenses that could have been prevented. When we weigh the costs, preventative health actions that you do now can potentially save you thousands of dollars years ahead. 

PERSONAL TRANSLATION

In real life, falls don’t happen because you’re weak, they happen because you couldn’t react fast enough to recover. The difference between catching yourself and hitting the ground is often measured in milliseconds. Reaction speed isn’t just performance, it’s protection for your health, your independence, and your future self.

VIABLE ACTION 

In the next 48-hours, try out a viable measurement to test your reaction speed and build over time. 

Timed Sit-to-Stand
How quickly can you stand up and sit down 5 times with control? This reflects lower-body power and coordination.

Step Reaction Drill Game
Have a partner (or use a random timer/app) cue you to step forward, backward, or sideways as quickly as possible in random sequences. This measures quick responsiveness, not just strength.

Drop Test
Have someone drop an object (like a ruler) and catch it as quickly as you can. This gives a rough sense of reaction time.

PrimeSpan trains responsiveness intentionally — not just repetition. Here, you aren’t left guessing what to train or what you can specifically do to improve. With clear, guided routines, responsiveness becomes something you build consistently—not occasionally. And that’s what Primespan aims to do. 

Maintaining independence isn’t a solo effort, it takes a team.
It’s something we strengthen, so that we grow stronger, step by step, together.