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Heat or Ice: Which Is Better for Your Workout Injuries?

author image Allen R Smith
Allen Smith is a founding writer for LIVESTRONG.COM. He earned his master’s degree in exercise science from San Diego State University, and worked in the first cardiac rehabilitation program in the U.S. In 1983, he was certified as a Clinical Exercise Physiologist with the American College of Sports Medicine. Since beginning his award-winning writing career in 2004, he has written thousands of health-related articles for print, the web and social media.
Heat or Ice: Which Is Better for Your Workout Injuries?
You got hurt while working out — now what? Photo Credit: praetorianphoto/E+/GettyImages

Whether you’re a professional athlete or a weekend warrior, workout injuries can happen to anyone. And if you’ve ever experienced a sprain, strain or other kind of pain from physical activity, you’ve likely heard the acronym RICE.

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It stands for Rest, Ice, Compression and Elevation (sometimes there’s also an S for Stability), and it’s the most popular recommendation for treating acute sports injuries.

But what about heat? Whether you use heat or ice (or a combination of the two) depends on how long it’s been since the initial injury. Injuries that respond well to cold and/or heat therapy include:

  • Joint sprains
  • Tendinitis
  • Shin splints
  • Muscle strains
  • Runner’s knee and other overuse injuries
  • Repetitive-motion injuries
  • Lower-back pain
  • Acute arthritis pain
  • Ankle injuries
  • Rotator cuff injury
  • Stress fractures
  • IT band syndrome
  • Patellofemoral syndrome
  • Delayed onset muscles soreness (DOMS)

The Two Phases of Injury and Recovery

How you treat the injury, using cold or heat, depends on the injury phase. The majority of sports injuries go through at least two distinct phases: the initial (acute) phase, followed by the recovery phase (sometimes called the repair, remodeling or chronic phase).

The first 24 to 48 hours following your injury is called the acute phase of injury. During this period, you’ll often experience sharp, shooting pain followed by swelling. This is the body’s way of protecting the injured area against further damage, forcing you to reduce pressure on the injured body part.

The recovery phase follows the acute phase and can last from a few days to a few weeks. During the recovery phase, you’ll often notice continued swelling, reduced range of motion and tissue soreness. If you’ve sprained your ankle or knee, you’ll have trouble putting weight on the affected leg.

Most injuries will require an ice pack immediately after the trauma occurrs.
Most injuries will require an ice pack immediately after the trauma occurrs. Photo Credit: AndreyPopov/iStock/GettyImages

Treating Acute Phase Injuries With Cold

The key to treating sports injuries is acting quickly. The sooner you start treating your injury, the faster you’ll recover. Apply cold compresses during the first 24 to 48 hours following injury. Cold compresses can consist of:

  • Commercially made cold wraps
  • Reusable gel packs
  • Freezer bags filled with ice cubes
  • Bags of frozen peas
  • Ice cups
  • Coolant sprays
  • Ice massage
  • Ice baths

Begin by wrapping the cold pack around the injured area using the attached straps or an elastic bandage and elevate the body part. You can also treat small, nagging injuries by rubbing ice directly on the skin.

For most other situations, avoid applying cold treatments like gel packs or freezer bags directly on the skin. Instead, wrap them in a hand towel to avoid causing freezer burns or tissue hypothermia.

Apply the cold packs for up to 20 minutes at a time, three to five times a day. Never apply ice to the injured area before exercising. While cold can be a safe approach to treating acute sports injuries, it’s not without its risks.

“Fingers, toes and Achilles tendons are more likely to experience frostbite due to superficial soft tissue,” says Kathy Weber, an orthopedic physician assistant at University of California San Diego Health. “But I have seen patients with frostbite on other areas if they apply the ice too long or fall asleep with the ice pack on.”

Additionally, avoid cold therapy for treating arthritic joints, as pain can increase with cold (arthritic joints tend to like to be warm), says Weber. “At the same time, I advise patients to listen to their bodies. If their injury prefers heat over ice or vice versa, they should do what feels best.”

Once the acute injury has healed, try applying heat.
Once the acute injury has healed, try applying heat. Photo Credit: PeopleImages/iStock/GettyImages

Treating Recovery Phase Injuries With Heat

Following the first 48 hours of injury, switch from cold compresses to heat applications. Heat applications are available in dry and moist heat varieties. You can apply heat to the injured area by using:

  • Heating pads
  • Commercial heat wraps
  • Heated gel packs
  • Hot, damp towels inside freezer bags
  • Hot-water bottles
  • Saunas and whirlpools
  • Paraffin wax baths
  • Professional heat therapy and ultrasound treatments

Depending on the injury, you’ll use local, regional or whole-body treatments. Local heat therapy is most effective for small areas like an injured knee. Regional treatments are used for widespread injuries and stiffness like shoulder joints or hips. Lower-back injuries requiring whole-body treatments respond best to saunas or immersion in heated baths or taking a hot shower.

The easiest way to apply heat at home is by using dry heat with a heating pad or dry heat packs. Dry heat promotes blood circulation and speeds recovery. It also sends oxygen and nutrients to the injury, helping it to heal faster. It relaxes the muscles and reduces pain and cramping.

Apply heat packs for 20 minutes or more on the affected area. Keep in mind that the effects from moist heat only last two hours, while dry heat applications can last more than eight hours.

Treating Injuries With Contrast Therapy

Somewhat related to both cold and heat therapy is contrast therapy; alternating between cold and heat applications during a single therapeutic session. Although contrast therapy has been used for thousands of years, it’s still somewhat controversial.

It’s used primarily by serious athletes who believe it speeds the healing process, helping them get back in the game sooner. Many therapists believe it’s effective for treating:

  • Plantar fasciitis
  • Shin splints
  • Carpal tunnel syndrome
  • Tennis elbow
  • Achilles tendinitis
  • Iliotibial band syndrome
  • Patellofemoral syndrome

The theory behind alternating cold and heat therapy is that it “exercises” injured muscles without you having to endure the pain of initiating movement. Repetitive cycling between cold and heat also modifies the body’s pain gate mechanism, reducing pain signals to the brain. The reduction of pain can be a welcome relief if you’re suffering from long-term, chronic athletic injuries. Contrast therapy uses:

  • Immersion in sinks, buckets or tubs
  • Wrapping with heating pads, ice packs or soaked towels
  • Pouring or spraying a stream from a faucet, container, removable shower head or hose

Contrast therapy is usually administered by certified athletic trainers and involves six brief, alternating periods of cold and heat:

  • 2 minutes of heating (comfortably hot)
  • 1 minute of cooling (cool, not cold)
  • 2 minutes of heating (hotter)
  • 1 minute of cooling (colder)
  • 2 minutes of heating (as hot you can handle)
  • 1 minute of cooling (as cold you can handle)

“I specifically advocate contrast therapy for patients with chronic regional pain syndrome, a condition in which nerves are hyperactive and the alternating of hot and cold can symptomatically calm the nerve pain,” says Weber. “For other more common musculoskeletal injuries, theoretically, contrast therapy could increase blood flow and healing.”

Whether you use heat, cold or contrast therapy, there are a few things to keep in mind. First, avoid using cold and heat therapies in the following cases:

  • Broken skin
  • Dermatitis
  • Deep vein thrombosis
  • Diabetes
  • Multiple sclerosis
  • Raynaud’s syndrome
  • Peripheral vascular disease
  • Open wound
  • Severe cognitive impairment
  • Areas with recent radiation treatment

If you have a history of heart disease, hypertension or are pregnant, check with your doctor before starting cold or heat therapy.

When to See a Doctor

Many, if not all, sports injuries can be successfully treated at home using cold and heat therapy. However, there are exceptions — cases where you should seek immediate medical attention. They include:

  • Tingling or paralysis of the area
  • Disorientation
  • Deformed and/or broken bones
  • Severe joint swelling and pain
  • Mental disorientation or confusion
  • Irregular breathing and/or pulse

If you experience any of these symptoms, call 911 immediately or have a family member transport you to an emergency room or hospital.

And if you’re still experiencing pain a week after being injured, make an appointment to see your physician or orthopedic specialist.

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