APEX PWR  |  Lessons in Longevity  ·  Vol. 78

How to Improve Bone Density: DEXA Testing and Strength Training in Portland, Oregon

Most people don't think about their bones until something breaks. By then, the problem started 20 or 30 years earlier.

Bone is living tissue. It builds, breaks down, and rebuilds every day of your life. The forces you put through your skeleton — or fail to put through it — determine whether it gets stronger or quietly thinner over the decades. Walking helps your heart. Sitting all day doesn't load your skeleton. And by the time a wrist or hip fracture makes the issue obvious later in life, the window to do the most about it was decades earlier.

At APEX PWR in Tigard, we work primarily with adults between 35 and 50 across the Portland metro area. Busy parents, professionals in the middle of long careers, people whose body and fitness has quietly slid to the backburner while the rest of life took priority. Bone health is one of the things that slides during that decade and a half — almost entirely silently. We use two tools to surface it and act on it: DEXA bone density testing, performed in-house, and a strength training methodology built on the most rigorous bone research available.

How Bone Actually Works

Bone is metabolically active tissue, the same way muscle is. It adapts to the demands you place on it. Load it, it gets stronger. Stop loading it, it gets weaker. The principle is called Wolff's Law, first described in 1892 and confirmed by more than a century of research since.

Four things stimulate bone to adapt and get stronger:

• Mechanical load: Carrying or lifting weight that compresses and challenges the skeleton
• Muscle force: Muscles pulling hard on the bones they attach to during heavy lifting
• Impact: Ground reaction forces from jumping, hopping, and bounding movements
• Progressive overload: Gradually increasing the demand over weeks, months, and years

Your bones need stress to adapt. Not stress in the cortisol sense, but mechanical stress: the strain that signals to your skeleton, "build more bone here."

What's Actually Happening to Your Bones

Peak bone mass is reached in the mid-twenties through age 30 for most people. After that, the trajectory turns downward for everyone.

Bone loss across the lifespan

• Up to age 30: Peak bone mass accrual. The bone you build here is the bone you spend later.
• Age 35 onward: Bone loss begins at roughly 0.5 to 1.0 percent per year for both men and women.
• Perimenopause: Loss begins to accelerate 1 to 2 years before the final menstrual period.
• Postmenopause (first 5 to 7 years): Women lose 3 to 5 percent per year, sometimes higher. This is the steepest decline of the lifespan.
• Age 60 and beyond: Loss slows to roughly 0.5 to 1 percent per year. Cumulative loss is significant.
• By age 80: The average woman has lost roughly 30 percent of her peak bone density.

If you're in your late 30s or 40s, this is the most important decade you have for bone. Most women lose the most bone, fastest, around the menopausal transition. The decade before that — ages 35 to 50 — is when most people could be doing the most to prevent it. Almost no one is, because it's the same decade most people are raising kids, building a career, and quietly letting their own health slide to the backburner.

About 1 in 2 women and 1 in 4 men over 50 will sustain an osteoporotic fracture in their lifetime. The action that prevents that fracture isn't taken at 60. It's taken at 38, 42, 47. Today.

Why a DEXA for Bone Density Is the Standard of Care

DEXA (dual-energy X-ray absorptiometry) is the clinical gold standard for measuring bone mineral density. It's the test the World Health Organization uses to diagnose osteopenia and osteoporosis. It's the test the American College of Obstetricians and Gynecologists recommends starting at age 65 for women, earlier for women with risk factors.

We do DEXA for Bone Density at APEX PWR in Tigard. The scan measures bone mineral density at the two clinically meaningful sites:

• Lumbar spine (L1 through L4)
• Dual femur (both hip joints)

Why those two sites? They're the bones most commonly fractured in osteoporosis, the bones most predictive of overall skeletal health, and the bones with the largest body of clinical reference data behind them. A scan at the wrist or heel tells you something. A scan at the spine and hip tells you what 40 years of medical literature has been built around.

T-score reference

• T greater than −1.0: Normal bone density. Goal is to preserve and continue building.
• T −1.0 to −2.5: Osteopenia. Bone density is low. Action now can reverse the trajectory.
• T less than −2.5: Osteoporosis. Significant fracture risk. Medical and training response both warranted.

Catch an osteopenic T-score in your late 30s or 40s and you have years of runway to do something meaningful about it. Find out at 70 because you broke a wrist on icy steps, and your options narrow considerably. This is why we recommend an annual or biannual DEXA for Bone Density starting in your 30s. The cost of one scan is low. The cost of finding out 20 years too late is not.

Two DEXA Scans, Two Different Pictures

We offer two distinct DEXA services at APEX PWR, and they answer different questions:

1. DEXA for Bone Density

Measures bone mineral density at the lumbar spine and dual femur. Tells you where you stand against clinical reference ranges (T-score), how you compare to others your age (Z-score), and whether you're tracking toward osteopenia or osteoporosis. This is the scan you repeat every 12 to 24 months to verify your training and nutrition are actually working.

2. DEXA for Body Composition

Maps your lean muscle tissue, body fat percentage and distribution, visceral adipose tissue (the dangerous fat that surrounds your organs), and Relative Skeletal Muscle Index (RSMI). Tells us whether you're building the muscle that builds bone, whether fat loss is actual fat loss or muscle loss, and whether visceral fat is driving chronic disease risk you can't see in the mirror.

Together, the two scans tell a complete story: what your skeleton looks like, what's pulling on your skeleton, and how the whole picture is changing over time.

How to Improve Bone Density: What the Research Actually Shows

The 2018 LIFTMOR randomized controlled trial, published in the Journal of Bone and Mineral Research, is the most rigorous study on exercise and bone density in postmenopausal women with osteopenia or osteoporosis. Watson and colleagues at Griffith University took postmenopausal women with T-scores below −1.0 and put them through a twice-weekly, 30-minute supervised program of high-intensity resistance and impact training: heavy compound lifts at 80 to 85 percent of one-rep max, plus impact loading.

Over 8 months, the training group improved bone density at the lumbar spine and femoral neck. The control group (home-based, low-intensity exercise) did not. Adverse events were minimal. The protocol was both effective and safe in a population previously told to avoid heavy lifting.

The principles behind the protocol

• Load matters. Heavy. Heavier than most people think.
• Rate of force matters. Bone responds to high-rate loading, not slow grinding.
• Site matters. Lifts have to load the spine and hip directly.
• Consistency matters. Twice a week, every week, for months.

Four Things That Actually Build Bone

1. Heavy resistance training

Compound lifts (squats, deadlifts, overhead presses, rows) loaded heavy enough to challenge you in the 4 to 8 rep range. The LIFTMOR protocol used 5 sets of 5 reps at greater than 85 percent of one-rep max, twice per week. Lighter weights done for higher reps don't deliver the same stimulus to bone.

2. Impact and jump loading

Brief bouts of impact — jumping, hopping, bounding — deliver high ground reaction forces directly to the hip and spine. Even a few minutes a few times per week can provide a meaningful stimulus for adults in the highest-leverage years for bone. We program a wide range of jumps, plyometrics, and scalable options inside our strength-based workouts at APEX.

3. Progressive overload over months and years

Bone remodeling is slow. The cells that build bone (osteoblasts) and the cells that break it down (osteoclasts) work on a 3 to 6 month cycle. Don't expect DEXA changes in 4 weeks. Plan for changes at 6, 12, and 24 months of consistent training. Think months and years, not weeks.

4. Protein, calcium, and vitamin D

Bone is roughly half mineral (calcium, phosphorus) and half protein (collagen matrix). Without adequate protein intake, the matrix can't rebuild. The Recommended Daily Allowance for calcium is 1,000 mg per day for adults under 50, rising to 1,200 mg after 50. Vitamin D, ideally measured via bloodwork, should sit in the 30 to 50 ng/mL range. Our nutrition team builds the dietary side of this with you.

Where supplementation is the right call, our Thorne dispensary partnership gives our community lifetime 25 percent off pharmaceutical-grade products.

Why Walking Alone Isn't Enough

Walking is great. Good for cardiovascular health, blood sugar regulation, stress, recovery, and longevity. Every adult should do more of it.

But walking doesn't apply enough mechanical strain to stimulate meaningful bone adaptation. Ground reaction forces in walking peak at roughly 1.0 to 1.3 times body weight. The threshold for osteogenic stimulus — the force level that signals bone to remodel — is closer to 3 to 4 times body weight. Heavy lifting and impact training deliver that. Walking does not.

If walking is your only "weight-bearing" exercise, your bones are not getting the signal they need to maintain density, much less build it. The walk is still worth doing. It just isn't the bone training conversation.

Strength Training for Bone Density in Tigard and Portland

We've worked with thousands of adults across Portland and the Pacific Northwest who came to us with three concerns: they wanted to know where they stood, they wanted to do something about it, and they didn't want to wait until they were 70 to start.

Our personal training and small group strength programs are built on the same evidence base behind the LIFTMOR trial: compound lifts, progressive overload, impact integration where appropriate, programmed twice or three times per week. We layer impact and jump training into workouts to support bone health alongside the resistance work. We recommend an annual DEXA for Bone Density as a check-in, alongside DEXA for Body Composition every 3 to 6 months.

We work primarily with busy parents and professionals between 35 and 50 — the exact decade where bone health decisions have the biggest long-term payoff and where life makes it easiest to ignore them.

Frequently Asked Questions

Local Resources at APEX PWR Tigard

• DEXA Scan in Tigard, OR
• Strength Training Foundations Trial
• Nutrition Coaching with Jennie Carolan
• Physical Therapy at APEX PWR
• APEX Thorne Dispensary
• How to Live a Healthy Lifestyle