Educational Blog

Muscle one of the strongest predictors of healthy aging
Kyra Seiler Kyra Seiler

Muscle one of the strongest predictors of healthy aging

Research consistently shows that muscle strength and cardiovascular fitness (VO₂ max) are two of the best predictors of how long and how well we live. Why? Because they reflect how well your muscles, heart, lungs, and nervous system work together.

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Exercising While Injured: How Myokines Can Boost Recovery
Kyra Seiler Kyra Seiler

Exercising While Injured: How Myokines Can Boost Recovery

Have you ever been injured or felt tenderness in a joint or muscle? Every injury sets you back, and it can feel like you have to stop all activity just to recover. Often, a week of injury leads to all desk work and no body work.

But what if you could exercise safely without aggravating the injured area—and even improve recovery?

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Strength Training and Sarcopenia
Kyra Seiler Kyra Seiler

Strength Training and Sarcopenia

As life expectancy rises, one of the greatest challenges isn’t just living longer, but living stronger. Among older adults, sarcopenia—the age-related loss of muscle mass and strength—affects roughly 10–16% of people worldwide. This condition impacts mobility, independence, and overall health, increasing the risk of falls, frailty, and even cognitive decline.

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The Guiding Principle of Safe Strength Training
Kyra Seiler Kyra Seiler

The Guiding Principle of Safe Strength Training

First, do no harm” isn’t just a medical maxim—it’s the cornerstone of our approach to exercise and strength training at Salus Strength. This principle guides how we design every program, both for our clients and ourselves.

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4 Strength Training Myths Debunked
Kyra Seiler Kyra Seiler

4 Strength Training Myths Debunked

There are persistent myths that prevent many people from participating in resistance training. Here are four of the most common misconceptions we hear each week—and what science actually says.

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Your Secret Weapon for Long-Term Health
Kyra Seiler Kyra Seiler

Your Secret Weapon for Long-Term Health

The individual who performs the high-intensity training will be the one who gets the benefit of glycogen depletion and reloading, while the one performing the lower-intensity, more frequent steady-state work is at far greater risk for cardiovascular disease, particularly conditions resulting from increased cholesterol levels.

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Why going slower is better.
Kyra Seiler Kyra Seiler

Why going slower is better.

A weekly session of intense eccentric exercise (slowing the lowering phase down of a repetition) has been found to significantly enhance metabolic health markers.

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Lifting Heavy is Essential for Postmenopausal Women.
Kyra Seiler Kyra Seiler

Lifting Heavy is Essential for Postmenopausal Women.

A study published in the Journal of Sport Sciences for Health evaluated the effectiveness of different resistance training (RT) protocols on body recomposition and physical performance in postmenopausal women.

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Is It Aging or Inactivity?
Kyra Seiler Kyra Seiler

Is It Aging or Inactivity?

Research shows that lifestyle factors, particularly physical activity (PA) and exercise, play a significant role in influencing how we age.

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Aerobic vs Anaerobic
Kyra Seiler Kyra Seiler

Aerobic vs Anaerobic

You’ve heard it before: cardio is for endurance, and weights are for strength. But what if that’s not the whole truth?

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Media Appearances

How to start exercising and how to do it from home - The Little Things Podcast | NZ Herald.

“Getting into exercise when you haven’t gone to the gym or been for a run for years can be pretty daunting.

But finding some simple exercises to do at home can be the easiest way to get back into a rhythm.

Kyra Seiler is an Auckland-based personal trainer who specialises in high-intensity strength training, and is soon to complete her Master’s in strength and conditioning.”

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How High-Intensity Training (HIT) Helps With Injuries Caused By CrossFit                    

Salus Strength Founder Kyra Seiler talks about how she helps clients with their CrossFit injuries using high-intensity training (HIT) workouts and get them in the best shape of their life.