Although earlier meta-analysis studies have provided evidence-based information useful for decision-making, debate regarding their quality continues. This study aimed to evaluate the quality of meta-analysis studies in the field of dance therapy (DT) using the Assessment of Multiple Systematic Reviews (AMSTAR) and AMSTAR 2 assessment tools. Meta-analysis studies on DT were collected from various databases. Seven meta-analysis studies were selected for this study. Our findings showed that the quality level of the meta-analysis studies related to DT was “High” on the AMSTAR evaluation, but their quality decreased to “Low” on the AMSTAR 2 evaluation. Moreover, using AMSTAR 2, 71.43% of the studies fell within the category of “Moderate” or below. There was no statistically significant difference in the quality scores of the characteristics of these studies. Our results suggest that (1) education on meta-analysis guidelines is required to improve the quality of DT-related meta-analysis studies, and (2) methodological caution is warranted, since different outcomes in evaluation scores for each tool may be obtained when using AMSTAR and AMSTAR 2. Based on this study, it is expected that common and specific guidelines for meta-analysis in DT can be established.

This study aimed to investigate the dose–response relationships between exercise prescription parameters and a range of health outcomes in patients with colorectal cancer (CRC). The following PRISMA guidelines, a systematic search of five databases was conducted. The inclusion criteria were randomized controlled trials (RCTs) of exercise interventions lasting ≥ 4 weeks in patients with CRC. Robust Variance Estimation (RVE) was used to synthesize the overall effects of exercise interventions across six outcome domains, including cardiorespiratory fitness (CRF) and muscular fitness (MF). Univariable RVE regression models and MetaForest analyses were employed to examine the moderating effects of two groups of variables: exercise prescription moderators and patient background characteristics. Risk of bias was assessed using the Cochrane tool, and the quality of evidence was evaluated using the GRADE approach. A total of 26 RCTs, involving 1731 CRC patients and 266 effect sizes, were included. CRF (ES = 0.35, p < 0.01) and MF (ES = 0.45, p < 0.01) showed statistically significant improvements. Regression analyses revealed threshold effects for both CRF and MF, with maximal improvements requiring sustained engagement in moderate‐to‐high intensity exercise. Subgroup analyses indicated that prehabilitation interventions were the most effective, while interventions during active treatment exhibited a decline–rebound trend over time. Based on these findings, high‐frequency and moderate‐to‐high volume interventions with individualized load regulation are recommended during the pre‐treatment phase. During active treatment, a more cautious approach is advised, involving reduced exercise volume during peak symptom periods and gradual progression during recovery.

Background This study validates the Korean Movement Culture Perception (KMCP) scale, a tool designed to assess Korea's 'Movement Culture' (e.g., K-pop dance, Taekwondo), a key element of the 'Shin Hallyu' (New Korean Wave) characterized by participatory consumption. Using the Rasch model, this study analysed the validity of the scale among 1,240 participants from Korea and China, a major market for Hallyu. Methods Participants responded to the 21-item KMCP scale, which comprises three sub-factors ('Korean attractiveness,' 'correct knowledge information,' and 'content diversification'), using a five-point Likert scale. Results The scale demonstrated high internal consistency (Cronbach’s α = .954), and all 21 items showed an adequate model fit (Infit range: 0.86–1.11), confirming its overall construct validity. However, the item-person map revealed that item difficulty was clustered in the middle, indicating a limited capacity to measure diverse perception levels. Furthermore, significant differential item functioning (DIF) was found in five items (4, 6, 7, 12, and 31) based on nationality, with three of this exhibiting cultural bias unfavourable to foreigners. Conclusions In conclusion, while the KMCP scale is a generally valid tool, the revision of culturally biased items is urgently needed to ensure cross-cultural equivalence. By improving the scale, this study will contribute to a more objective evaluation of Hallyu content's value and support the global dissemination of Korean movement culture as a health promotion tool through education.