Why Does My Child Have Poor Posture and Coordination?

Written by Dr. Laura Mraz, OTD, OTR/L
President, Illinois Occupational Therapy Association (ILOTA)

Have you noticed your child slouching at the dinner table, tiring quickly during play, struggling with handwriting, or seeming a little clumsy compared to their peers?

If so, you’re not alone. These challenges are common concerns for parents, and they often have a shared root cause that many families have never heard of: core strength and stability.

Every time your child sits upright in a classroom, climbs a playground structure, catches a ball, colors a picture, or writes their name, their body relies on a strong foundation of muscles working together.

Occupational therapists call this foundation proximal stability, but you can think of it simply as the core strength and body control that support all movement.

When children have difficulty with posture, balance, coordination, or fine motor skills, it can affect much more than physical activities. It may impact their confidence, participation in sports and playground games, classroom performance, and even everyday tasks such as getting dressed or completing homework.

The good news is that core strength and stability can be developed through fun, playful activities that fit naturally into your child’s day.

In this article, you’ll learn why core strength is so important, how it influences your child’s movement and learning, and practical ways to support its development at home.

By understanding this critical building block of development, you’ll be better equipped to help your child build the strength, coordination, and confidence they need to thrive.

If you have concerns about your child’s posture, balance, coordination, or motor development, our team is here to help. Contact us today to learn how Three Birds One Mission can support your child’s unique strengths and needs.

What Is Proximal Stability?

Think of proximal stability as your child’s “body headquarters.” It’s the strength and steadiness of the muscles closest to the center of the body: the core (the tummy and back), the shoulders, and the hips. When these central muscles are strong and stable, everything else works better.

These muscles act as a steady base for everything the arms, hands, and legs do. When that base is strong, your child can sit upright, hold a pencil, and move with confidence. When it’s still developing, the hands and arms have to work harder to make up for it, and little ones may tire out quickly during activities like writing or play. The good news is that this base can be built with practice.

As Case-Smith and Jane Clifford O’Brien explain in Occupational Therapy for Children and Adolescents (St. Louis: Elsevier, 2015), the body builds movement from the center outward.

A strong center equals capable hands. A weak center equals tired hands.

In the world of pediatric occupational therapy, this concept is foundational. Before a child can master fine motor skills like handwriting or buttoning, their core and shoulders need to provide a stable base. Proximal stability is that base.

Why Is Proximal Stability So Important?

When your child’s core and shoulders are stable, the rest of their body becomes more coordinated, confident, and ready for action. This stability quietly supports nearly every part of their day.

Here’s how core strength for kids shows up in real life:

• Daily living skills: dressing, feeding, bathing, and grooming
• School success: handwriting, cutting with scissors, and other fine motor tasks
• Play: puzzles, climbing, running, and sports
• Home life: helping with cleaning, organizing, and cooking
• Driving someday: upright posture and coordinated upper body movement
• Caring for others: lifting, carrying, and supporting safely

The American Occupational Therapy Association reminds us that these everyday activities, which OTs call “occupations” depend on strong foundational muscles.

In other words, proximal stability is the quiet hero behind almost everything your child does.

It’s easy to overlook because it works behind the scenes. But once you notice it, you’ll see its influence everywhere.

How Proximal Stability Helps Fine Motor Skills

Here’s the part that surprises many families: your child’s hands are only as strong and skilled as the shoulders and core that support them.

When the center of the body is stable, the hands are free to do their best work. With a strong foundation, your child can:

• Write more smoothly and with less fatigue
• Grasp objects with more strength and control
• Cut straighter lines with scissors
• Button and zip faster during dressing
• Draw for longer stretches without tiring
• Play longer with toys and tools

Occupational therapists often use a simple phrase to capture this idea: “Proximal stability equals distal mobility.”

Translated into everyday language, it means that a strong, steady center gives your child capable, coordinated hands.

So if you’ve noticed your child developing their fine motor skills more slowly, the answer may not be in the fingers at all. Sometimes the real work begins at the shoulders and core.

That’s a hopeful message, because building core strength is something we can support through play.

Signs Your Child May Benefit From More Proximal Stability

Many parents start noticing little clues before they ever hear the term “proximal stability.” You know your child best, and your observations matter.

Here are some common signs families notice:

• Slouching or leaning during seated tasks like coloring or eating
• Fatigue during writing or drawing, or complaints of a tired hand
• Avoiding climbing, monkey bars, or other upper body play
• W sitting (sitting with legs bent out to the sides in a “W” shape)
• Using two hands for tasks that usually take one, like carrying a cup
• Difficulty staying upright and steady during floor play

These aren’t problems or failures. They’re simply clues, gentle signals that your child’s core and shoulders are still developing and could use a little extra support.

Every child grows on their own timeline, and noticing these signs early gives you a wonderful opportunity to help.

If several of these clues sound familiar, a conversation with a pediatric occupational therapist can offer individualized insight into your child’s unique strengths and next steps.

How Occupational Therapists Build Proximal Stability (The Fun Way!)

Here’s some good news. Occupational therapists don’t hand kids dumbbells and say “good luck.” We build strength through play, movement, and joy. That’s the magic of pediatric occupational therapy. Children grow while they’re having fun.

Some of the playful methods Occupational Therapists use include:

• Vertical writing surfaces that naturally activate the core and shoulders
• Climbing and swinging for full upper body engagement
• Tummy time variations for babies and older kids alike
• Scooter boards for strengthening through movement
• Obstacle courses that combine many skills at once
• Dynamic balance activities that challenge the whole center

Case-Smith and O’Brien emphasize that children learn best through purposeful, playful movement (Occupational Therapy for Children and Adolescents, 2015).

That’s exactly why occupational therapy activities for children look so much like play. When kids enjoy what they’re doing, they stay engaged longer, and that engagement is when real progress happens.

Five Activities to Try at Home

You don’t need a therapy clinic to start building your child’s core strength. With a few simple items and a spirit of play, you can weave these shoulder stability exercises for kids right into your everyday routine. Let’s have some fun!

1. Wheelbarrow Walking

Gently hold your child’s legs while they walk forward on their hands.

Tip: Weightbearing through the arms is a powerhouse for shoulder stability. For extra giggles, try bear walks or crab walks too. No equipment needed! Just open floor space and a little encouragement.

2. Drawing on a Window or Wall

Grab some washable markers or crayons and let your child draw on a vertical surface.

Tip: Vertical surfaces naturally activate the core and shoulder muscles as your child reaches up. Try these washable window markers or a set of chunky crayons that are easy to grip. For a dedicated surface, a standing children’s easel works beautifully.

3. Tummy on Ball Puzzle Play

Have your child lie on their tummy over a therapy ball while completing a puzzle on the floor in front of them.

Tip: This position builds core control and shoulder strength at the same time. A well-sized therapy exercise ball is a versatile tool for home. No exercise ball? Use the edge of a couch for propped-up play instead.

4. Playground Adventures

Monkey bars, climbing ladders, and swinging are all fantastic for shoulder strength and core stability.

Tip: The playground is basically a free OT gym. Encourage hanging, climbing, and reaching. These movements that strengthen your child’s center while they’re simply having a blast with friends.

5. Scooter Board or Skateboard Tummy Riding

Have your child lie on their tummy on a scooter board and push themselves forward with their hands.

Tip: This prone extension position builds powerful core muscles and shoulder stability. A sturdy scooter board is a favorite in therapy settings. If pushing feels too hard at first, gently pull your child along with a rope so they can build up strength gradually.

The takeaway here is simple: small, playful moments add up. Even a few minutes a day can support your child’s growing strength.

Why This Matters for Your Child’s Future

Proximal stability isn’t just about muscles. It’s about confidence, independence, and joy.

When your child’s center is strong, they explore more freely, learn more comfortably, and participate more fully in the occupations that make up daily life.

A steady core today becomes smoother handwriting tomorrow, easier dressing next year, and greater independence for years to come. You’re not just building strength. You’re building a foundation for lifelong participation.

The American Occupational Therapy Association reminds us that occupational therapy is about supporting meaningful participation (Occupational Therapy Practice Framework, 2014).

Building proximal stability is one of the most meaningful investments we can make in a child’s development.

Let’s recap the key points:

• Proximal stability is the strength of the core, shoulders, and hips. Your child’s “body headquarters.”
• A strong center supports fine motor skills, daily living, school success, and play.
• Simple signs like slouching or fatigue can be gentle clues.
• Play-based activities are the most effective and joyful way to build strength.
• Small, daily moments at home make a real difference over time.

Your next step is easy: pick just one activity from the list above and try it this week. Watch your child’s confidence grow. And if you’d like individualized guidance, connecting with a pediatric occupational therapist can help you create a plan tailored to your child’s unique journey.

You know your child best, and together, we can support their strength, one playful moment at a time.

Frequently Asked Questions About Proximal Stability

Do I need special equipment to support my child’s proximal stability at home?

Not at all. This is one of our favorite things to share with families! Many of the most effective proximal stability activities require nothing more than open floor space and a willingness to play.

Wheelbarrow walking, bear walks, and tummy-time play cost nothing and can happen in your living room any day of the week. When you’re ready to add a few simple tools, affordable options like a therapy ball, a scooter board, or a children’s easel can open up even more possibilities.

Start simple, follow your child’s lead, and remember that the most powerful ingredient in any home activity is your presence and encouragement. You already have everything you need to get started!

How long does it take to see improvement in my child’s proximal stability?

Every child’s journey is beautifully unique, so there’s no single timeline that fits every family. That said, many parents begin noticing small but meaningful changes — like improved sitting posture, less fatigue during drawing, or more confidence on the playground — within a few weeks of consistent, playful practice.

Formal therapy with a pediatric occupational therapist can accelerate this progress through individualized activities designed specifically for your child’s strengths and needs.

The most important thing to remember is that every small moment of movement adds up. You’re not looking for overnight transformation; you’re building a foundation, one step at a time.

How is proximal stability different from general core strength?

Great question and one we hear a lot! General core strength refers to the muscles of the tummy and back. Proximal stability is a broader concept that includes the core and the shoulder and hip muscles, which is all the muscles closest to the center of the body. Together, these muscle groups form a stable base that supports everything your child does, from sitting upright at their desk to reaching across a table.

Think of it this way: core strength is one important piece of the puzzle, and proximal stability is the whole picture. When your child’s occupational therapist talks about building proximal stability, they’re working to strengthen all of these foundational muscles so your child has the support they need to move, learn, and grow with confidence.

Can proximal stability issues affect my child’s behavior or attention in the classroom?

Absolutely and this surprises many families. When your child’s core and shoulders are working hard just to keep them upright in their chair, there’s very little energy left for listening, learning, and focusing.

Children who are working overtime to maintain posture may fidget, slump, get up frequently, or seem distracted — not because they’re being difficult, but because their body is doing its best to stay stable. Supporting proximal stability can actually free up your child’s attention, making it easier for them to engage, participate, and thrive in the classroom.

What age should my child start working on proximal stability?

Building core and shoulder strength is important at every age and it’s never too early or too late to start. For babies, tummy time is one of the first and most powerful ways to develop this foundation. For toddlers and school-age children, play-based movement like climbing, crawling, and reaching all naturally build stability over time.

If you have concerns about your child’s development at any age, a pediatric occupational therapist can assess where your child is and create a plan tailored to their unique needs and timeline.