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  • Hot and cold therapies: when to use what

    AIA Vitality NZ - 4 min read

    10 August 2022

    Better Lives with AIA VitalityBetter Lives with AIA Vitality
    • Health

    If you've ever hit the sauna post-workout or reached for a bag of frozen peas for an injury, you've given hot and cold therapies a go. But which one suits your needs best?

    AIA Vitality | Hot and cold therapies - wen to use what

    We're all familiar with the scenes: footage of elite athletes being wrapped in aluminium foil or submerging themselves in an ice bath post-event; gym goers piling into the sauna or steam room post-workout; parents whipping out the wet flannel after their little one takes a bump to the head.

    But does treating pain with heat packs or cold compresses actually work? And how do you know whether you should be getting either the ice trays or the heat packs prepped?

    CRYOTHERAPY – THE COLD HARD FACTS

    "Cold therapy – or 'cryotherapy', to use its technical term – covers everything from those infamous ice baths to ice packs, coolant sprays and even the emergency bag of frozen peas you turn to when there's nothing else to hand," says registered physiotherapist Andy Britten.

    In fact, the health benefits of cold therapy are heralded as being so holistic that whole body cryotherapy was one of the hottest health trends a few years ago1.

    While the jury's still out on whether this is a clinically proven injury management technique, what we do know is that localised use of cryotherapy to an injured area can be incredibly effective.

    HOW IT WORKS

    "Localised cryotherapy is basically the external application of intense cold to an affected area,” explains Andy.

    “It helps to reduce blood flow, which, in turn, helps to reduce inflammation while simultaneously reducing nerve activity to alleviate pain.”

    WHAT SHOULD I USE IT FOR?

    Cold therapies are most effective in treating acute injuries or pain – particularly when they're used as part of the time-old RICE (rest, ice, compression, elevation) tactic.

    "Use targeted applications to treat things like rolled ankles or bruises, and immersion therapies, like a cold bath or shower, immediately after a strenuous workout to relieve muscle soreness," advises Andy.

     As part of immediate first aid for sprains and strains, Andy recommends applying a cold pack to the affected area for 15 minutes every two hours for 24 hours, then for 15 minutes every four hours for 24 hours.

    "Bear in mind though that while cold therapy is effective in relieving post-workout aches and pains, it doesn't actually repair damaged muscles – you'll need to go heavy on the 'rest' part to give those sufficient time to heal."

    BURNING QUESTIONS ABOUT HEAT THERAPY?

    The first thing to be aware of is that there are two elements to heat therapy: dry heat treatments – which include the likes of saunas, electric heat pads and heat rubs – and moist heat treatments, like steam rooms, hot baths, steamed towels and hot water bottles.

    While dry heat can usually be applied continuously for up to eight hours, moist heat is recommended to be used in two-hour cycles.

    HOW IT WORKS

    "Heat therapy basically acts in the exact opposite way to cold therapy," says Andy.

    "It increases blood flow to the affected area, rather than restricts it, which directs more oxygen to the joints and muscles surrounding the source of the pain for greater relief."

    Small Steps Matter

    You can find steam rooms and saunas at some Les Mills gyms around New Zealand. They’re a great way to rest and recover after a big workout. Les Mills is an AIA Vitality partner gym, AIA Vitality members can get up to 50% per cent off their membership and can earn up to 100 AIA Vitality points per visit, per day.

    WHAT SHOULD I USE IT FOR?

    Generally speaking, heat therapy should be used for chronic pain. Think back and neck pain or spasms, along with osteoarthritic symptoms like joint discomfort and stiffness.

    "Just don't use it in instances where the skin is broken, or your body temperature is already elevated," advises Andy.

    Heat therapy can also play its part in your pre-workout warm-up by encouraging tissue elasticity which gives muscles more flex and stretch.

    Finally, if you’ve hit the gym hard and are experiencing delayed onset muscles soreness (DOMS), studies have shown that the humble heat pack should be your go-to for pain relief2.

    Footnotes:

    1. https://www.economist.com/united-states/2017/03/23/the-spread-of-cryotherapy
    2. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8862647/
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    Article by: AIA Vitality Staff Writer

    Staff writers come from a range of backgrounds including health, wellbeing, music, tech, culture and the arts. They spend their time researching the latest data and trends in the health market to deliver up-to-date information, helping everyday New Zealanders live healthier, longer, better lives. 

     

    Disclaimer: The information in this article is general information only and is not intended as financial, medical, health, nutritional, tax or other advice. It does not take into account any individual’s personal situation or needs. You should consider obtaining professional advice from a financial adviser and/or tax specialist, or medical or health practitioner, in relation to your own circumstances and before acting on this information.


    This content is brought to you by AIA Vitality

    AIA Vitality is a science-backed health and wellbeing programme that provides the guidance, tools, and rewards to get more out of life so you can start thriving.

    Find out more on AIA Vitality.

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