By Coach Adolfo Salgueiro

I live in South Florida, not too far from the beach. One of the projects I am currently working on has me driving through Ft. Lauderdale Beach on a regular basis at various times of the day.

One of the favorite pastimes during my commute, has become checking of the form of the many runners I see along the beachside. It started as something fun to do and now it has turned into an exercise to become more proficient at analyzing running form issues. Yes, I do understand there is no one-size-fits-all running form, but there are blunders that are blatantly wrong and if not corrected, they’ll lead to injury.

Holding the phone in your hand while you run, could lead to injury.

I’ve noticed that at least 75% of runners with bad arm mechanics are holding their cellphones in one of their hands. By now, when I spot form flaws from afar, I can bet who is holding a phone, and I rarely miss.

Phones have many advantages and functions and they’ve become ubiquitous. They provide music, tracking, feedback, safety and security, among many others. Yes, it is important to carry it while you run, but that doesn’t mean you must carry it in your hand. With so many options in the market, there are plenty of alternatives to clenching to it. And this is why:

In his book “Running to the Top”, legendary coach Arthur Lydiard states that “If we clench our fists – and I often see people running with weights clenched in the hand – we tighten the upper shoulder muscles and, consequently, start to get a shoulder roll. Something has to go back when you\’re running; it should be your hand, but put tension on those arms and the shoulder will begin to roll, and that\’s undesirable.”

Of course your phone is not as heavy as the lightest of weights, but it is a precious object, both in monetary and emotional value. So, regardless of how light your phone may be, you are holding in tightly. You don’t want to drop it. This means you are contracting the muscles in your hands, and thus, arms, shoulders and even chest, screwing with the counterbalancing your gait needs by compromising the flow of your kinetic chain. While this happens, your other arm is doing its own thing. A recipe for unbalances in your leg, hip and shoulder, and thus, injury.

This is not a new phenomenon. It has been touched upon in many magazines and websites for several year, now.

In a 2019 article from Cosmopolitan UK, by Caitriona Harvey-Jenner, professional running coach Alexa Duckworth-Briggs, urges runners to carry phones in a waist belt. \”When you hold something in our hands, there are subtle knock-on effects to your gait. It creates muscular imbalances, affects the distribution of weight across your body, and makes you a less efficient runner in general. By making one arm heavier, you’re altering the momentum of your limbs. And your body will attempt to compensate for the imbalance by working certain muscles harder than others. That’s where repetitive strain injuries will come into play.\”

Arm bands are a little bit better, since you don’t contract your muscles, but they are not the solution, either.

In another article, this one in Active.com, author Hunter Hewitt explains how “running with something in your hand causes you to use body parts differently than you normally would. Proper running form starts with muscle equilibrium and even distribution of weight across your body. Holding something creates asymmetry, as you use your hand and arm differently compared to when you\’re running hands-free. These asymmetrical effects lead to poor form and muscular imbalance, which make you a less efficient runner.”

Since we are touching on the subject, the same principles apply to water bottles, towels and any other artifacts you may want to bring with you while running. Carry them on you, sure, but don’t hold to them.

Although an arm phone carrier is better than holding it in your hand, it is not the solution, as it adds weight to one of your sides. And even though you may think it is negligible, and for one day or two it may be, running mile after mile, week over week, month over month, at the rate of about 1500-1700 steps per mile, the cumulative effect will eventually get to you.

Let’s get this bad habit fixed before we end up holding those phones to take pictures from the sidelines while our friends, those who carry them in their belts, finish their races.