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Funnel plot of the efficacy of 7 interventions of cold and heat therapies and one passive recovery (control group). Left: 24 h; middle: 48 h; right: > 48 h. A: passive recovery (PAS); B: cold water immersion (CWI); C: the novel modality of cryotherapy (CRYO); D: cold pack, E: ice massage, F: phase change material (PCM); G: contrast water therapy (CWT); H: hot/warm water immersion (HWI/WWI); I: hot pack, J: ultrasound.
