How to Exercise More Safely in Clarksville TN
Injuries from a new exercise routine tend to cluster in its first few weeks, and there's a plausible physical reason for that timing: muscle adapts to training faster than tendon and bone do. The standard advice to build up gradually makes sense on paper, but when it was tested in two trials in runners, it made no difference to injury rates. Below is what's going on in your muscles, tendons and bones when you start, what the research on building up slowly found, and where a Clarksville TN chiropractic exam fits in.
Why do injuries cluster in the first weeks of a new exercise program?
Muscle, tendon and bone all respond to load by remodeling, but they don't keep the same schedule. Muscle changes measurably within about three to four weeks. Tendon lags behind muscle by a month or two, and studies generally need eight weeks or more to pick up a change in it. Bone starts mineralizing over weeks to months, and full mechanical competence can take considerably longer than that.
So your muscles can get stronger faster than the tendons and bones carrying the loads those muscles produce. A few weeks into a running program, you may be able to run farther than your tendons have adapted to. How much overuse injury that mismatch actually accounts for hasn't been measured, and the researchers who describe it go no further than saying it may pose a challenge. We won't go further either. It's a plausible mismatch of timescales, and nobody has put a number on it as a cause.
Does building up gradually make exercise safer?
A common story behind an exercise injury is a change: in weekly volume, intensity, surface, footwear or technique, or coming back from a layoff at the level you were at before it. Tissue adapts to load over weeks, and a jump in volume, intensity, surface or technique can outpace that adaptation. That's the reasoning behind the standard advice to build up gradually.
The advice itself has been tested, though, and it didn't hold up. Two randomized trials in recreational runners found a graded increase made no difference to injury rates. The wider training-load framework built on the same idea has been shown to produce its results just as well when its own inputs are swapped for random numbers. So the mechanism is real, but the rule built on top of it hasn't been shown to hold, and anyone quoting you a specific safe percentage is going past the evidence.
Is there a safe starting amount of exercise?
There isn't one number. A reasonable starting load depends on your current conditioning, age, training history, injury history and what the activity demands, and those differ so much from one person to the next that a general figure wouldn't mean anything.
The build-up matters for a second reason: in the largest study of when people drop out of exercise, most of those who quit did it during the build-up, and injury usually wasn't why. That study followed 947 sedentary adults through supervised trials lasting six to eight months. Of the 295 who dropped out, the reason given most often was lack of time, at 40%, and injury was well down the list. Two thirds of them left before reaching the prescribed volume or while still building up to it, and among those who got through that build-up, attendance held steady for the remaining six to eight months.
Those were supervised trials in people starting from sedentary, so the numbers don't carry straight over to someone training on their own. The shape of the finding is what's useful: the fragile stretch is the beginning, and it's usually not injury that ends it.
Is it normal soreness or an exercise injury?
Delayed-onset muscle soreness shows up some hours after a workout you're not used to. It usually peaks somewhere between one and three days later, and then it settles. It follows unfamiliar loading, especially loading applied while the muscle is lengthening. Muscle damage is the usual explanation for it, though the exact mechanism still isn't settled, and how sore you feel is a poor guide to how much damage actually happened.
From the outside, soreness and injury aren't always easy to tell apart, and that's a question for an exam, not a checklist. Features that make an exam worth arranging include pain that's one-sided and sharp, pain you can trace to a single moment, pain in a joint instead of in the belly of a muscle, swelling or bruising, pain that gets worse over the following days instead of better, pain that climbs session after session, and pain that starts earlier in each new session.
When do exercise symptoms need a medical doctor or 911?
Some symptoms during or after exercise need a medical doctor, not us, and some need one immediately:
- Chest pain, breathlessness out of proportion to the effort, palpitations, light-headedness or fainting during exercise. This is a medical emergency and not a musculoskeletal question.
- Confusion, agitation, stumbling or collapse while exercising in heat, with hot skin. Call 911. This is heat stroke and it can kill quickly.
- Severe muscle pain, marked weakness, or dark or cola-coloured urine after unaccustomed intense exercise. Any one of these is enough: they frequently do not appear together and muscle pain is often absent. Seek immediate emergency care, rather than waiting to see how it develops.
- A limb that is cold, pale, or numb below an injury, or a limb swelling rapidly with pain out of proportion to the injury. Both are time-critical and are judged in hours.
- A wound over an injury with visible bone, or bleeding that will not stop.
- A head injury with loss of consciousness, confusion, repeated vomiting, or a worsening headache.
- A joint that is deformed, that will not bear weight, or that gave way at the moment of injury
- A joint that becomes hot, swollen and red, particularly with fever or feeling generally unwell
- Numbness, pins and needles or weakness in a limb
- A sudden severe pain with an audible snap, particularly in the calf or the back of the thigh
What we look at when exercise hurts
When you come in with an exercise complaint, we ask what changed, when, and what your training looked like before it, because that loading history is usually more informative than the one session where the symptom showed up. We test movement, and where relevant, strength, sensation and reflexes.
We will take your history, examine you, and tell you what we find, including when what we find is not something we treat. If we are not able to help you with your problem or are unable to reduce your pain levels, we will make sure to give you a recommendation to another experienced provider.
We cover warming up and stretching separately, in our fitness tips and on our page about stretching.
If a new routine in Clarksville has left you with pain that isn't acting like ordinary soreness, and nothing on the list above applies, call our team at Source Chiropractic. We'll want to hear what changed in your training, and when.
Follow the evidence
Research, with context.
Selected published sources behind what we've written, each with what it found and what it can't tell us. We give you both halves because no paper can diagnose you or predict how your own care will go.
World Health Organization 2020 guidelines on physical activity and sedentary behaviour
Recommendations for children, adolescents, adults and older adults, including people living with selected chronic conditions or disability.
What it foundThe guideline recommends regular activity, strength work and less sedentary time. For adults, the general target is 150 to 300 minutes of moderate activity or 75 to 150 minutes of vigorous activity weekly.
What it can't tell usPopulation targets have to be adapted to a person's health, capacity and recovery, and some activity is better than none. The guideline doesn't test chiropractic care, and it isn't a rehabilitation plan for an injury.
Publication details & citation
Bull et al. World Health Organization 2020 guidelines on physical activity and sedentary behaviour. British Journal of Sports Medicine. 2020. DOI: 10.1136/bjsports-2020-102955.
Read the publication recordEffect of unsupervised home based proprioceptive training on recurrences of ankle sprain: randomised controlled trial
522 athletes aged 12 to 70 with a recent lateral ankle sprain, receiving usual care with or without an eight-week home balance program.
What it foundOver one year, 22% of the training group reported another sprain, compared with 33% of the usual-care group.
What it can't tell usRecurrences were self-reported. It backs rehabilitation after an ankle sprain, but it didn't test manipulation, and it doesn't show immediate pain relief.
Publication details & citation
Hupperets et al. Effect of unsupervised home based proprioceptive training on recurrences of ankle sprain: randomised controlled trial. BMJ. 2009. DOI: 10.1136/bmj.b2684.
Read the publication record
Our editorial policy explains how to read these sources and what our clinical-review labels mean.