Optimizing soft tissue injury rehabilitation: PEACE & LOVE with vs without cryotherapy—protocol for a sham-controlled randomized trial in acute lateral ankle sprain
摘要
Acute lateral ankle sprains, especially those affecting the anterior talofibular ligament (ATFL), are one of the most frequent injuries in athletes and active adults. These injuries cause pain, swelling, functional restriction, and high recurrence. The PEACE & LOVE framework discourages the use of cryotherapy, yet ice remains widely used in sports and rehabilitation practice. To date, there is limited high-quality evidence evaluating the effect of cryotherapy within this framework. This trial is designed to investigate whether adding cryotherapy to PEACE & LOVE rehabilitation improves outcomes compared with sham cryotherapy.
MethodsThis single-center, parallel-group, sham-controlled randomized clinical trial will include 60 physically active adults (aged 18–40 years) with grade I–II acute lateral ankle sprains sustained within 48 h. Recruitment has not commenced and is planned from March to May 2026. Follow-up assessments will continue through 12 weeks post-randomization. Participants will be randomly assigned (1:1) to receive either PEACE & LOVE plus cryotherapy (0–4 °C, 20 min, three times daily for 72 h) or PEACE & LOVE plus sham cryotherapy (identical packs at ~20–25 °C with insulation). The primary outcome is pain intensity measured by the Numeric Pain Rating Scale (NPRS) at day 7. Secondary outcomes are functional recovery measured by the Lower Extremity Functional Scale (LEFS) at day 14, week 4, and week 12; ankle swelling assessed by figure-of-eight measurement at baseline and day 7; ankle dorsiflexion via the Weight-Bearing Lunge Test (WBLT) at baseline, week 4, and week 12; short-term analgesic use (paracetamol log, day 0–7); and re-injury rates assessed at week 4 and week 12. Analyses will follow the intention-to-treat principle using ANCOVA adjusted for baseline scores, reporting effect sizes and 95% confidence intervals.
DiscussionThis trial will be the first sham-controlled randomized study to evaluate cryotherapy as an adjunct to the PEACE & LOVE framework in acute ankle sprain. Findings will clarify whether cryotherapy provides clinically meaningful benefits in pain relief, function, and recurrence prevention, and may guide evidence-based rehabilitation practice.
Trial registrationClinical Trial Registry India (CTRI): CTRI/2024/09/073357. Registered on April 9, 2024.