Fitness Tips From a Chiropractor in Clarksville TN
Pulled muscles, strains, sprains and low backs that objected to a particular lift are among the common musculoskeletal consequences of exercise. This page describes the tissue mechanics behind them rather than prescribing a routine, and where a Clarksville TN chiropractic examination fits.
What a warm-up does
Muscle and tendon are viscoelastic: how they respond to being stretched depends on how warm they are and how quickly the load is applied. Raising tissue temperature through general activity lowers the tissue's resistance to being lengthened. Blood flow to working muscle rises, and nerve conduction and muscle contraction speeds increase with temperature as well.
It is worth being exact about what warming does not do, because the usual version of this claim is stronger than the evidence. Warmed muscle is less stiff, and it is often said to absorb more energy before failing. In the controlled work that varied temperature directly, the opposite was found: warmed muscle failed at a lower load and absorbed less energy than cold muscle. Less stiff is not the same as harder to tear, and a warm-up is not body armour.
Warming is also a change in tissue properties rather than extra length added to a muscle. It does not make a muscle permanently longer.
The other half of a warm-up is usually described as rehearsal: performing a movement at low intensity before performing it at high intensity. That is a rationale rather than a finding. Warm-up routines are largely built from coaching tradition rather than from studies that tested their individual parts, and this is one of the parts that has not been tested.
Strains and sprains
A strain is an injury to muscle or to the tendon that attaches it to bone. A sprain is an injury to a ligament, which attaches bone to bone. The distinction matters because ligament is less vascular than muscle and generally slower to heal.
Both usually occur when tissue is loaded beyond what it can absorb, and both are most likely at the extremes: a muscle lengthening while it is contracting, at the end of its range, at high speed, or when it is fatigued. That combination is why strains cluster in the last repetitions of a set and the last minutes of a game rather than the first.
Flexibility, and what it is not
Flexibility is the range of motion available at a joint. It is limited by different structures in different people and at different joints: muscle and tendon extensibility in some, joint capsule and ligament in others, and bone shape in others again. Bone shape does not change with stretching, which is one reason identical stretching produces very different ranges in different people.
The change static stretching most consistently produces in studies is an increase in the range a person tolerates, and the evidence attributes that largely to a change in tolerance to the sensation of stretch rather than to a change in tissue length. Whether stretching before activity reduces injury rates is genuinely contested in the research literature; the evidence is stronger for general warming than for stretching specifically. That is an honest description of the state of the evidence rather than a recommendation either way.
Cooling down
Continuing at low intensity after hard effort brings the effort down in stages rather than stopping abruptly. The claim that a cool-down prevents next-day soreness is not well supported. Delayed-onset muscle soreness follows unaccustomed load, particularly load applied while the muscle is lengthening. Muscle damage is the usual explanation for it, though the exact mechanism is still not settled, and how sore a person feels is a poor guide to how much damage actually occurred. Either way it is part of adapting to new work rather than a sign that something has gone wrong.
Load, and the rate it changes at
Tissue adapts to load over weeks, and a jump in volume, intensity, surface or technique can outpace that adaptation. That reasoning is the basis for the usual advice to build up gradually, and it is worth knowing that the advice itself has been tested and did not hold up: two randomised trials in recreational runners found a graded increase made no difference to injury rates, and 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 replaced with random numbers. The mechanism is real. The rule built on top of it is not established, and anyone quoting a specific safe percentage is going past the evidence.
When an exercise injury is not ours
Some presentations need a physician rather than a chiropractor, and some need one urgently:
- 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 a visit here involves
A first visit is a history and an examination: what happened, what position the joint was in, what has changed since, and what movement and strength look like now.
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.
If you have picked up an injury training in Clarksville TN, call our team at Source Chiropractic.
Follow the evidence
Research, with context.
Published sources behind the discussion. Read the findings alongside the limits; a study is not a diagnosis or a promise of a result.
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 150–300 minutes of moderate activity or 75–150 minutes of vigorous activity weekly.
What it cannot tell usPopulation targets need adaptation to health, capacity and recovery. Some activity is better than none; this guideline does not test chiropractic treatment or prescribe rehabilitation 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 recordAcute effects of muscle stretching on physical performance, range of motion, and injury incidence in healthy active individuals: a systematic review
Studies of stretching before activity in healthy, physically active participants.
What it foundStretching can increase range of motion acutely. Longer static stretches immediately before performance had larger performance reductions than shorter holds; the surrounding warm-up mattered.
What it cannot tell usThese are mostly immediate responses in healthy people. More range is not automatically less pain, and these findings do not establish treatment for an injured tendon, unstable joint or irritated nerve.
Publication details & citation
Behm et al. Acute effects of muscle stretching on physical performance, range of motion, and injury incidence in healthy active individuals: a systematic review. Applied Physiology, Nutrition, and Metabolism. 2016. DOI: 10.1139/apnm-2015-0235.
Read the publication record
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