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De Nardi, M, Pizzigalli, L, Benis, R, Caffaro, F, and Cremasco, MM. Acute effects of partial-body cryotherapy on isometric strength: maximum handgrip strength evaluation. J Strength Cond Res 31(12): 3497-3502, 2017-The aim of the study was to evaluate the influence of a single partial-body cryotherapy (PBC) session on the maximum handgrip strength (JAMAR Hydraulic Hand dynamometer). Two hundred healthy adults were randomized into a PBC group and a control group (50 men and 50 women in each group). After the initial handgrip strength test (T0), the experimental group performed a 150-second session of PBC (temperature range between -130 and -160° C), whereas the control group stayed in a thermo neutral room (22.0 ± 0.5° C). Immediately after, both groups performed another handgrip strength test (T1). Data underlined that both groups showed an increase in handgrip strength values, especially the experimental group (Control: T0 = 39.48 kg, T1 = 40.01 kg; PBC: T0 = 39.61 kg, T1 = 41.34 kg). The analysis also reported a statistical effect related to gender (F = 491.99, P ≤ 0.05), with women showing lower handgrip strength values compared with men (women = 30.43 kg, men = 52.27 kg). Findings provide the first evidence that a single session of PBC leads to the improvement of muscle strength in healthy people. The results of the study imply that PBC could be performed also before a training session or a sport competition, to increase hand isometric strength.

Cryotherapy is the application of a stimulus of a cryotherapeutic temperature below -100 °C in a period of 1-3 min in order to stimulate and use physiological reactions of human body to cold. It can be applied to specific body parts or to a whole body. Whole-body cryotherapy is a treatment method applied in treatment of motor organ issues, nervous system diseases, psychiatry, dermatology and laryngology. The research group consisted of 80 male in the age range of 65-77 suffering from chronic, lasting more than 3 months, lower back pain. The subjects qualified to the research were divided into two groups. Group A consisted of 40 patients who participated in whole-body cryotherapy (WBC) twice a week. Group B also contained 40 patients who participated in WBC whole week. Examinations were conducted twice. The first one was conducted before the commencement of the treatment while the second one after the therapy was over. The results of the research did not show any statistically significant improvement in patients from Group A. However, the results obtained by Group B have proven significant condition improvement and enable the researchers to conclude that WBC is effective in treating patients with lower back pain.

Recovery after exercise is a crucial key in preventing muscle injuries and in speeding up the processes to return to homeostasis level. There are several ways of developing a recovery strategy with the use of different kinds of traditional and up-to-date techniques. The use of cold has traditionally been used after physical exercise for recovery purposes. In recent years, the use of whole-body cryotherapy/cryostimulation (WBC; an extreme cold stimulation lasting 1–4 min and given in a cold room at a temperature comprised from −60 to −195°C) has been tremendously increased for such purposes. However, there are controversies about the benefits that the use of this technique may provide. Therefore, the main objectives of this paper are to describe what is whole body cryotherapy/cryostimulation, review and debate the benefits that its use may provide, present practical considerations and applications, and emphasize the need of customization depending on the context, the purpose, and the subject's characteristics. This review is written by international experts from the working group on WBC from the International Institute of Refrigeration.