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Local cryotherapy and whole-body cryotherapy at -110° C

Local cryotherapy and whole-body cryotherapy at -110° C

Author: REINHARD FRICKE

Cryotherapy with ice, cold gas or cold packs reduces or even eliminates pain, acts anti- inflammatory, decongesting and improves the function of the affected joints. Muscular hypertonicities will be reduced. Under cryotherapy, blood circulation will be maintained in the inflammatory region. Thus, the following indications result: inflammation, pain, swelling, impairment of function, muscular hypertonicity. Whole-body cryotherapy at –110°C results in a significant functional improvement. Oxygen concentration in the blood increases.

Since time immemorial, cold therapy in its various forms has been used for suppressing inflammations. The cold back of a knife to cure stye (hordeolum), aluminium acetate compresses against sprain, cold compresses against fever and local application of ice were elements of the general medical knowledge and were used to suppress inflammations.

However, as also local pain of the shoulder-hand syndrome, tennis elbow, sciatica, and pain in a tendon had been lumped together under the term “rheumatism”, heat therapy, which may be used to cure these non-inflammatory pain syndromes, had become of great importance to the treatment of rheumatic disorders over the millenniums. The „few“ inflammatory rheumatic illnesses, amounting to about three million in Germany alone, were thus included into heat therapy. If the inflammation had been fuelled by the heat and the symptoms worsened, this was credited to the so-called ‘cure reaction’. But in fact, it was a grave error in treatment.

More than 100 years ago, the ice bag had been described in Germany for treatment of inflammations. In the early 1960’s only a few studies about the therapeutic effect of intense local cold against inflammations were available. For more than 25 years, we have successfully been using cold therapy in the form of ice to cure inflammatory rheumatic disorders. After it had become evident that the therapeutic effect lasted only approx. three hours, we started to apply local ice treatment three to four times per day at intervals of three hours.

Today, several methods for use in local cryotherapy are available.

LOCAL CRYOTHERAPY

 

ICE TREATMENT

Ice in a closed plastic bag may be applied to hand and finger joints for 5 to 10 min, to shoulder and knee joints for 5 to 20 min.

COLD PACKS

In addition to the ice therapy, cold packs are used today which are supplemented with a cold storing agent, e.g. glycerol, and applied to the skin after being cooled down to –12°C to –14°C in the freezer.

COLD GAS

In 1979, Yamauchi introduced the nitrogen cold gas therapy with –180°C on the rheumatology congress in Wiesbaden/Germany. The intense local, dry cold is perceived as comfortable by most people. The –180°C cold air stream is blown onto the relevant body part by means of compressed air and has to be moved over the skin. Joints or extremities are moved simultaneously. The application time is 0.5 to 1.5 minute.

In 1982, the first local cold gas instrument in Europe, which we developed in cooperation with the company Westfalen AG, was put into operation. Using a dry air pressure of two atmospheres above atmospheric pressure, the liquid nitrogen is transformed into nitrogen gas and blown onto the skin.

In recent years cold air instruments have been developed using a local cold air stream of –30°C (refrigerator principle) which is blown onto the skin. Due to the higher temperature, the application time is 2 to 3 minutes. The application period is determined by the initial temperatures of the different local cryotherapeutic methods. The application time, however, also depends on the patient’s individual tolerance range.

1.1. Physiological Effect

Reduction of tissue temperature
According to Blair, the local tissue temperature is decreased 3.2 cm deep to a temperature of 22°C during ice application. The skin temperature is decreased to approx. 8°C and lower. The cryotherapeutic effect continues for about three hours [3].

As long as the ice melts, a temperature from 0°C to +2°C can be maintained for more than one hour.

Without lying on a hot joint, the cold pack becomes increasingly warmer and exceeds the 0°C limit after 30 minutes at the latest.

By means of ice bags and locally applied cold air stream applied by various methods, a large area of the joint and its narrow environment will be cooled. This therapeutic effect is desired as nociceptors (pain receptors) in the skin are linked to the connective tissue around the joints as Scheible and Mensing demonstrated in their studies around 1985. [16,18]. A therapeutic, analgesic effect is thus realized by cryotherapy also near the joints.

Tissue blood perfusion
Highly dosed cold causes vasoconstriction of the skin. In the muscle tissue underneath the skin, however, a reactive dilatation occurs.

In the case of chronic polyarthritis (rheumatoid arthritis) it was proved that the arterial blood flow in the knee joint can be maintained for more than 15 to 20 min after ice application [15]. This may be ascribed to the fact that in chronic polyarthritis no physiological vasoconstriction occurs due to a vasculitis and a strong formation of new capillaries in the granulation tissue as it is observed in healthy persons. Arteries and arterioles affected by vasculitis are no longer able to receive any physiological stimulation.

Lewis has observed that periodic vasodilatations occur during cooling of the skin. The constant succession of vasoconstriction and vasodilatation ensures a sufficient oxygen supply to the cells. In addition, excessive cooling of the body is prevented.

1.2 Therapeutic effect

Pain relieving effect
Cold has a pain relieving, analgesic effect. After decrease of the skin temperature, nociceptors are blocked thus creating a connection to the sensitive periarticular nerves. On the soccer field, the therapeutic effect of extremely low temperatures is used by means of the cold air spray. This effect is verified by a diminishment of the pain area in shoulder pains (pain under the arch of the shoulder blade) upon ice or cold air therapy [7].

Pain induced by electrical stimulation is clearly blocked under the influence of ice, cold gas or cold air stream. The pain threshold is raised to a higher level for more than three hours after occurrence of a maximum pain relieving effect directly after therapy [14].

Functional improvement
As we have proved after local ice treatment and local nitrogen cold gas therapy, a limited range of motion is significantly improved in inflamed joint diseases.

Decongesting effect
Analog to bodies contracting under the influence of cold, a decongesting effect may be obtained simply by cooling in tissues which are swollen due to water retention (edema). At the same time, the edema which was caused by an inflammation is dissipated via the lymphatic system. In addition, it reduces edemas caused by traumatic lesions.

Increase in strength
In chronically inflamed joint diseases, the analgesic effect, decongesting effect, and the related functional improvements result in an increase of strength. In patients with polyarthritis significant increases in function, e.g. grasping, were observed [7].

Anti-inflammatory effect
Cooling of the tissue results in a significant reduction of temperature in deeper tissue regions [3]. As a result, the enzyme collagenase, which causes a degradation of tendinous tissue (collagen), is inactivated by a temperature decrease of only 6 K. [12]. This may be realized since a temperature reduction of 14 K already occurs in a depth of 3.2 cm after prolonged cooling with cold packs. A further evidence of the anti-inflammatory effect of cryotherapy was found in the observation that in crystal-induced arthritis created in the joints of dogs only a tenth of the usually observed 20,000 leuko/ml3 of white blood cells appear in the effusion after local cryotherapy. In contrast, leukocytes increased to 40,000 under heat application (thermotherapy).

 

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Heat aggravates inflammations [4].

A third example of an anti-inflammatory effect of locally applied cryotherapy is the induced regeneration of inflamed tissue underneath the skin in hedgehogs after silicon implantation. While under normal ambient conditions a solid granuloma with dense macrophage accumulation develops, no cellular reaction is observed during winter sleep [13].

1.3 Change of the muscle condition

Relieving muscle spasms
Intense local cryotherapy may relieve excessive tonicity, i.e. muscle tensions. In the case of lumbago, i.e. pain in the lower region of the back, this is possible simply by local application of ice bags. An even faster effect can be obtained by a cold air stream applied locally for half a minute.

Muscle activation
In case of lack of muscle tone cooling may have a stimulating and activating effect. A temporary short-term cooling may result in a higher initial muscle tone which allows subsequent physiotherapeutic treatment thus strengthening the musculature with a greater stimulating effect.

As a result, the following therapeutic effects can be achieved:

1.4 Therapeutic procedure

The fact that cryotherapy lasts for about three hours until the tissue has re-warmed calls for a sensible strategy: To achieve a long-term treatment success, local cold treatments applied in intervals of three hours are required. A long-term treatment success can be achieved by application of four daily therapy sessions over a period of approx. 12 hours. As a result, this may lead to drug savings. In addition to its therapeutic effect, locally applied cryotherapy using ice or cold air stream in its various forms is also a reasonable preparation for subsequent physiotherapeutic treatments. Multiple daily cryotherapy and physiotherapy, when used in conjunction with medicamentous therapy, are important adjuvant therapy forms leading to a significant functional improvement within three to four weeks [8].

Whole-body Cryotherapy
The therapeutic effect of cryotherapy will even be considerably improved by whole-body cryotherapy. Since 1984, the first cold chamber outside Japan, built by the company Westfalen AG, has been in use in Germany after introduction of whole-body cryotherapy by Yamauchi in 1980 [21]. Each day, up to 40 to 60 patients are treated with a temperature of –110°C [9,10].

Using liquid nitrogen dry air is cooled down via heat exchanger in the cold chamber to a desired temperature of –110°C and –160°C. Yet another procedure of whole-body cold treatment is represented by the cold cabin where cold air is blown onto the body.

The latest development of a three-phase refrigerating system delivers a constant temperature of –110°C (Seus, Wilhelmshaven/Germany). This system runs at considerably lower operating costs as compared to cold chambers operated with nitrogen or cold air.

The patients enter he cold chamber wearing nose mask, head band and gloves as well as closed shoes. After the blood pressure has been checked and upon approval of the physician who stands at the control panel to supervise the application, patients enter the antechamber accompanied by a therapeutic assistant in winter clothes. After closing the door, the inner door is opened. Patients now enter the main chamber which has a temperature of –140°C to –110°C and walk around for 0.5 to 3 minutes in the chamber. Breathing out the inhaled air takes twice as long because the cold air expands while being warmed in the patients’ lungs. Due to the mist which forms in all cold chambers as a result of the warm, humid air flowing in patients walk along handrails for better orientation in the chamber. Patients may leave the chamber at any time. A member of the therapeutic team who is watching the patients from the antechamber may also assist them.

Within 0.25 to 1 minute after leaving the cold chamber, the blood flow in pale skin is strongly stimulated by vasoconstriction causing a pleasant, comforting sensation.

2.1 Physiological effects

Whole-body cryotherapy does not cause any stress to the organism. ACTH increases, cortisol is decreased. No change of the blood glucose occurs. Furthermore, no increases in adenohypophysial hormone, prolactin and STH were observed. Nor was an increase in adrenalin observed [5].

In comparison, a significant increase in noradrenalin was verified. This indicates an activation of synapses and nerve endings in the skin. This increase induces a kind of supply reaction. Minor increases in blood pressure are observed in patients with normal blood pressure. Hypertensive persons have to be treated with drugs.

An increase of the oxygen content was observed both in the blood of the sick and the control persons [19]. This increase can be traced back to a deeper respiration and inhalation of a larger number of oxygen molecules per liter air at –110°C. The increased oxygen content in the blood [19] produces an improved coronary blood flow. No angina pectoris has been observed although patients with coronary heart diseases entered the cold chamber. Moreover, extrasystolies were considerably reduced. These two observations indicate an improved oxygen supply in the coronary system.

2.2 Therapeutic effects

Analgesic effect
After approx. 30 seconds, children and adults (1/2 to 83 years of age) experience a pain blocking effect. It becomes easier to move the joints. The therapeutic effect lasts a minimum of three hours.

Functional improvement
Directly after treatment in the cold chamber a significant functional improvement in all joints affected by chronic polyarthritis or ankylosing spondylitis is evidenced. A significant functional improvement in some parameters [1] has also been observed following the three hours after cryotherapy in which physiotherapy had been performed.

Influencing immunocytes
Studies showed that in chronic polyarthrits, the number of lymphocytes is decreased for a minimum of three hours [2]. Further differentiation of lymphocyte population proved that T-helper lymphocytes decrease in chronic polyarthritis (rheumatoid arthritis) and ankylosing spondylitis (Morbus Bechterew) [17,11]. This results in an increase of the T-suppressor cells which control T-helper lymphocytes by inhibiting their tissue-destroying activity. The control mechanism probably works by means of Langhans’ giant cells which express antigenes after cryotherapy in patients with chronic polyarthritis.

In further studies we observed a decrease of interleukine 1, 2 and 4. [22]. The results suggest an immunomodulating effect of whole-body cryotherapy.

Furthermore, we observed a bronchospasmolytic effect in emphysematous bronchitis and bronchial asthma.

2.3 Indications

Based on the current research results, whole-body cryotherapy may successfully be employed as part of a combination therapy in the following diseases:

Inflammatory joint diseases
Degenerative diseases with secondary inflamed components Spine disorders – inflamed and degenerative
Soft-tissue rheumatic disorders
Collagenoses

REFERENCES:

[1] Birwe G., Fricke R., Hartmann, R.
Ganzkörper-Kältetherapie – Beeinflussung der subjektiven Beschwerdelinderung und der Gelenkfunktion: Z. phys. Med. Balneol. Med. Klimatol. Gräfelfing 18 (1989), p. 11
[2] Birwe, G. Taghawinejad M. Fricke, R. Hartmann, R.: Beeinflussung hämatologischer und entzündlicher Laborparameter. Z. phys. Med. Balneol. Med. Klimatol. Gräfelfing 18 (1989), p. 16
[3] Blair, E. : Clynical Hypothermia. Mc-Graw-Hill. N.Y. (1964).
[4] Dowart, B. B. et a1.: Arthritis and Rheumatism 16 (1973) 540.
[5]Fricke, L., Fricke, R. Wiegelmann, W.: Beeinflussung hormoneller Reaktionen durch Ganzkörper- Kältetherapie. Z. phys. Med. Balneol. Med. Klimatol, Gräfelfing 17 (1988), p. 363
[6] Fricke, R. : Lokale Kryotherapie bei chronisch entzündlichen Gelenkerkrankung drei- bis viermal täglich. Z. phys. Med. Balneol. Med. Klimatol. Gräfelfing 17 (1988), p. 196.
[7] Fricke, R: Lokale Kaltlufttherapie – eine weitere kryotherapeutische Behandlungsmethode. Z. phys. Med. Balneol. Med. Klimatol. Gräfelfing 13 (1984), p. 260.
[8] Fricke, R.: Ganzkörper-Kältetherapie bei –110°C bis –120°C. Z. phys. Med. Balneol. Med. Klimatol. Gräfelfing 14 (1985), p. 291
[9] Ganzkörper-Kältetherapie bei –110°C bis –120°C. Z. phys. Med. Balneol. Med. Klimatol. Gräfelfing 14 (1985), p. 291
[10] Fricke, R.: Ganzkörper-Kältetherapie in einer Kältekammer mit Temperaturen um –110°C. Z. phys. Med. Balneol. Med. Klimatol. Gräfelfing 18 (1989), pp. 1 – 10.
[11] Frye, K.: Promotionsarbeit Univ. Münster /1994).
[12] Harris, E. D. et al.: New England J. Med. 290 (1974), pp. 1 – 16.
[13] Janssen, C. E., Waaler, E.: Acta path. et. microbiol scandinav. 69 (1967), p. 577
[14] Kröling, P., Mühlbauer: Einfluß von Eisbeutel, Kaltluft und N.-Kaltgas auf die gelenknahe elektrische Gelenkschwelle. Phys. Rehab. Kur. Med. 2 (1992), pp. 1 – 6.
[15] Liman, W., Fricke, R.: Arterielle Durchblutung unter Kryotherapie, bei chron. Polyarthritis. Z. Phys. Med. Balneol. Med. Kimatol 11 (1982), p. 196
[16] Mense, S.: Effects of Temperature of Muscle Spindles und Tendon Organs.
Pflügers Archiv. Berlin 374 (1978). p. 159.
[17] Pohlen, B., Fricke, R.: Verhalten der Lymphozytenpopulation nach Kältekammer-Therapie. Z. phys. Med. Balneol. Med. Klimatol. Gräfelfing 17 (1988), p. 363.
[18] Scheible, H. G.: Neurophysiologie des Gelenkschmerzes, periphere und spinale Mechanismen: Habilationsschrift. Med. Fakultät Würzburg, (1986).
[19] Taghawinejad, M., Birwe, G., Fricke, R., Hartmann, R.: Ganzkörper-Kältetherapie – Beeinflussung von Kreislauf und Stoffwechselparametern: Z. phys. Med. Balneol. Med. Klimatol, Gräfelfing 18 (1989), S. 23 [20] Yamauchi. T, Nogami, S. Miura, K., Sakawoto, K.: the cryogenic therapy, the exercising therapy and the 24 hours rehabilitation: IX Europäischer Kongreß für Rheumatologie Abstractband (1979),
.p. 1025.
[21] Yamauchi, T.: Whole Body Cryotherapy is a method of extreme cold –175°C treatment initialy used for Rheumatoid Arthritis: Z. phys. Med. Balneol. Med. Klimatol (1986) p. 311
[22] Richter, Claudia. Fricke, R. study results to be released soon

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