Fight Age-Related Muscle Loss: Why Explosive Movement Matters as You Age

Ageing doesn't just mean losing muscle mass. It can also mean losing the ability to produce force quickly — and that's where explosive movement becomes increasingly important.

As we get older, maintaining muscle is essential for strength, mobility, balance and independence. Resistance training is one of the most effective ways to combat age-related muscle loss, but there is another component of fitness that deserves far more attention: muscle power.

Muscle power is your ability to produce force quickly.

It is what allows you to get up rapidly from a chair, climb stairs, catch yourself when you trip, accelerate into a sprint, jump, push yourself away from the ground or react quickly when you lose your balance.

And unfortunately, muscle power tends to decline substantially with age.

The good news?

Your muscles and nervous system remain trainable throughout life.

Adding appropriately prescribed explosive and high-speed movements to a resistance-training program may help preserve the physical qualities that ageing tends to take away.

Strength Isn't the Same as Power

Strength and power are related, but they aren't the same thing.

Strength is your ability to produce force.

Power is your ability to produce force quickly.

A person might still be capable of generating considerable force but become significantly slower at producing it.

Consider two people performing a chair stand.

Both may eventually be able to stand up.

But the person who can generate force rapidly can stand up quickly and confidently, while someone with reduced power may struggle to generate enough force quickly enough.

This distinction becomes increasingly important with age.

Research indicates that muscle power declines at a greater rate than muscle strength in older adults, making power an important component of maintaining functional capacity.

What Happens to Type II Muscle Fibres as We Age?

Skeletal muscle contains different fibre types, broadly including Type I slow-twitch fibres and Type II fast-twitch fibres.

Type I fibres are well suited to prolonged, lower-intensity activities such as walking and endurance exercise.

Type II fibres are particularly important for producing high levels of force quickly.

They contribute to activities such as:

• sprinting

• jumping

• accelerating

• rapidly changing direction

• climbing stairs

• getting up quickly from a chair

• catching yourself during a stumble

• producing explosive strength

Unfortunately, ageing has a disproportionate effect on these fast-twitch fibres.

Research examining individual muscle fibres has found that Type I fibres can be relatively well preserved with ageing, while Type II fibres demonstrate substantial reductions in size and contractile function.

A systematic review of Type II fibres similarly identified age-related reductions in Type II fibre size and fibre number as important changes occurring in ageing skeletal muscle.

This is one reason why an older person may still possess reasonable endurance but notice that speed, explosiveness, jumping ability and rapid force production have deteriorated considerably.

Why Do We Lose Explosive Ability?

Age-related muscle deterioration is complex.

It isn't simply a matter of "losing muscle."

Ageing can involve changes to:

• muscle fibre size

• Type II fibre function

• motor units

• nervous-system signalling

• neuromuscular coordination

• rate of force development

• muscle quality

• physical activity levels

The nervous system also plays an important role.

Producing force rapidly requires the brain, spinal cord, nerves and muscles to coordinate extremely quickly.

When these systems become less efficient, the ability to generate force rapidly can decline even beyond changes in muscle size alone.

This is why maintaining muscle mass isn't necessarily enough.

We also need to maintain the ability to use that muscle quickly.

Enter Explosive Training

Explosive training — often called power training or high-velocity resistance training — involves deliberately producing force rapidly.

The goal isn't simply to lift a heavy weight.

The goal is to move a resistance quickly and with control.

Examples can include:

Lower-body movements

• fast bodyweight squats

• squat-to-calf-raise

• step-ups performed with rapid intent

• medicine-ball squat throws

• low-level jumping

• countermovement jumps

• explosive sled pushes

Upper-body movements

• medicine-ball chest passes

• medicine-ball overhead throws

• explosive wall push-ups

• fast resistance-band presses

• controlled explosive cable movements

The appropriate exercise depends on the person's age, training history, mobility, balance, injury history and current strength.

Explosive doesn't mean reckless.

The objective is controlled, intentional acceleration.

You Don't Need to Lift Heavy to Train Power

One of the most interesting aspects of power training is that explosive movement doesn't necessarily require maximal loads.

Research in older adults has investigated power training using a range of resistance levels, with evidence that low-to-moderate loads can produce meaningful improvements in muscle power and neuromuscular function.

For example, rather than attempting a maximal squat, an appropriately trained person might perform a lighter squat with the intention of moving upward as quickly as safely possible.

The resistance provides the stimulus.

The speed provides the additional challenge.

This creates a very different training stimulus from simply lifting slowly to fatigue.

Why Explosive Training May Be Particularly Valuable as We Age

A systematic review and meta-analysis involving 15 trials and 583 participants found that power training produced significant improvements in muscle power compared with conventional strength training, along with improvements in activity-based performance measures.

This is important because maintaining physical independence isn't just about how much weight you can lift.

It's about how effectively you can use your strength in the real world.

Think about everyday movements:

Getting out of a chair

You need to generate force rapidly through your hips and legs.

Climbing stairs

You need to repeatedly generate force through your lower body.

Recovering from a stumble

You may have only a fraction of a second to produce enough force to regain your balance.

Getting up from the floor

You need strength, coordination, mobility and rapid force production.

These are all examples where power matters.

The Importance of Rate of Force Development

One of the most useful concepts in this area is rate of force development (RFD).

RFD describes how quickly force can be generated.

Imagine that you need to catch yourself after unexpectedly losing your balance.

You don't have five seconds to gradually develop maximal strength.

You may have only a fraction of a second.

Your ability to rapidly activate the appropriate muscles can therefore become extremely important.

Resistance training can improve both strength and rate of force development in older adults.

This gives us another reason to include some faster movements rather than training exclusively with slow, controlled repetitions.

Don't Abandon Traditional Strength Training

Explosive training isn't a replacement for conventional resistance training.

You need both.

Traditional resistance training remains extremely valuable for maintaining:

• muscle mass

• maximal strength

• bone loading

• connective-tissue capacity

• physical resilience

• muscular endurance

Power training adds another dimension.

A well-rounded ageing strategy might therefore include:

1. Strength

Lift challenging resistance with controlled technique.

2. Hypertrophy

Provide enough training stimulus and nutrition to maintain or increase muscle mass.

3. Power

Move appropriate loads rapidly.

4. Mobility

Maintain usable ranges of motion.

5. Balance

Challenge the systems responsible for maintaining stability.

6. Aerobic fitness

Support cardiovascular health and general physical capacity.

Together, these qualities create a much more complete approach to healthy ageing.

How to Introduce Explosive Training Safely

The phrase "explosive exercise" can sound intimidating, particularly for someone who hasn't trained this way before.

It doesn't have to be.

You can start extremely simply.

For example:

Beginner

Fast sit-to-stand

Sit on a stable chair.

Stand up with controlled but rapid intent.

Slowly sit back down.

Repeat.

Intermediate

Fast bodyweight squat

Lower under control.

Drive upward rapidly.

Keep the movement technically sound.

Advanced

Jump squat

Perform a controlled squat and jump vertically.

Land softly.

Reset before repeating.

The progression should be based on the individual's capabilities rather than their age alone.

Someone in their 70s who has trained consistently for decades may have considerably greater capacity than a sedentary person in their 50s.

Explosive Doesn't Mean Going to Failure

This is an important distinction.

Traditional hypertrophy training often involves accumulating fatigue.

Power training is different.

When the goal is rapid force production, quality is more important than exhaustion.

As fatigue accumulates, movement speed and technique deteriorate.

Power-oriented training therefore generally uses relatively low repetitions, adequate rest and a focus on high-quality repetitions.

International exercise recommendations for older adults specifically emphasise explosive actions without taking the movement to concentric failure.

Think:

Fast. Crisp. Controlled. Rest. Repeat.

Not:

Exhaust yourself at all costs.

Your Muscles Need a Reason to Stay Powerful

The human body adapts to the demands placed upon it.

If most of your physical activity consists of slow walking, sitting and low-intensity daily activities, your body has relatively little reason to preserve high levels of rapid force production.

Resistance training provides a reason to maintain strength.

Explosive training provides a reason to maintain speed and power.

This doesn't mean you can completely stop the ageing process.

It means you can provide your neuromuscular system with an appropriate stimulus to help maintain the physical qualities that are important for an active life.

Ageing Doesn't Mean You Have to Move Slowly

One of the biggest misconceptions about getting older is that becoming slower and weaker is simply something we have to accept.

Some degree of physiological change is inevitable.

But the rate at which physical capacity declines is influenced by lifestyle, activity and training.

Resistance training has been shown to improve strength and physical function in older adults, while research specifically examining power training suggests that high-velocity training can provide additional benefits for muscle power and functional performance.

The objective isn't to train like an elite athlete.

It's to preserve the physical capabilities that allow you to live like an active human being.

Train for the Body You Want to Have Later

If you're in your 30s, 40s or 50s, you don't need to wait until you experience significant muscle loss before doing something about it.

Building and maintaining muscle is a long-term investment.

And preserving power should be part of that investment.

Your future self will benefit from having:

strong muscles.

healthy joints.

good balance.

adequate mobility.

and the ability to generate force quickly.

Ageing is unavoidable.

Becoming unnecessarily weak, slow and physically fragile is not necessarily inevitable.

Train your muscles for strength.

Train them for size.

And don't forget to train them for speed.

Strong Therapy: Supporting Stronger, More Capable Bodies

At Strong Therapy, we believe maintaining physical function is about more than simply treating problems after they occur.

A combination of appropriate resistance training, mobility work, recovery and soft-tissue care can help support an active lifestyle throughout adulthood.

If you're experiencing muscular tightness, restricted movement, recurring soft-tissue problems or difficulty maintaining your training routine, professional assessment and targeted soft-tissue therapy may help you continue moving well.

Stay strong. Stay mobile. Stay powerful.

Strong Therapy — Sydney.

JC