BACKGROUND: Studying the relationship between flexibility and body composition of college students is of great significance for enhancing the levels of physical health and sports. OBJECTIVE: To investigate the relationship between sit-and-reach and body composition of college students in Guangxi Zhuang Autonomous Region and differences between sexes. METHODS: Totally 2 175 students from a Guangxi university were randomly selected. Body composition was determined by the MC-180 body composition tester. The students were divided into four groups: ≤ 12.10 cm group,＞ 12.10-16.40 cm group,＞ 16.40-20.70 group and＞ 20.70 group according to quartile of sit-and-reach measured in accordance with the National Physical Health Test Standard. All data were processed by SPSS 22.0 software. RESULTS AND CONCLUSION: Sit-and-reach was significantly correlated with body mass index, percentage of body fat, fat-free mass index, upper limb lean mass and lower limb lean mass (P ＜ 0.05), and percentage of body fat was negatively correlated with sit-and-reach (P ＜ 0.05). The body mass index, fat-free mass index, upper limb lean mass and lower limb lean mass in the ≤ 12.10 cm group were significantly lower than those in the other groups. Fat-free mass index and upper limb lean mass were correlated with sit-and-reach in male college students (P ＜ 0.05). The fat-free mass index and upper limb lean mass in the＞ 16.40-20.70 cm group were significantly higher than those in the ≤ 12.10 cm group. Therefore, there is a positive correlation between the flexibility and fat-free mass index and upper limb lean mass in college students.

Objective:To assess the effect and safety of bone-filling mesh container (BFC) and percutaneous kyphoplasty (PKP) in treatment of osteoporotic vertebral compression fractures (OVCF).Methods:PubMed, Web of Science, Cochrane Library, CNKI, VIP, CBM and Wanfang database were searched by computer from inception to September 2019, for the randomized controlled trial (RCT) or case-control trial (CCT) that compared the treatment of OVCF using BFC and PKP. Two reviewers independently screened studies according to the inclusion and exclusion criteria, extracted data and evaluated the quality of the included studies. Then meta-analysis was performed using RevMan 5.3. The literature search results, basic characteristics of the included studies, operation time, postoperative visual analogue score (VAS), Oswestry disability index (ODI), Cobb's angle, leakage rate of the bone cement and publication bias were evaluated.Results:Only 5 RCTs and 5 CCTs involving 668 patients were included. Compared with the PKP group, the BFC group showed no significant difference in postoperative VAS ( MD=-0.06, 95% CI -0.24-0.37), ODI ( MD=-0.20, 95% CI-1.13-0.73) and Cobb's angle ( MD=0.18, 95% CI-0.05-0.91), while there were significant differences in operation time ( MD=-3.07, 95% CI-5.53--0.60) and leakage rate ( OR=0.21, 95% CI 0.12-0.36). Funnel plots showed that there was no significant asymmetry among the above indicators, suggesting that publication bias had little effect on the results. Conclusion:BFC is as effective as PKP in the postoperative efficacy of OVCF, but is superior in operation time and leakage rate of bone cement.

Ardisia Crenata Radix is a traditional Chinese medicinal plant that belongs to the Myrsinaceae family,and its main active components are coumarins,saponins,flavonoids,and volatile oil.Bergenin,ardisicrenoside A,ardisicrenoside B,ardisiacripin A,ardisiacripin B,and embelin were identified as active anticancer compounds in in-depth studies into the anti-tumor effects of Ardisia Crenata Radix.They show high therapeutic potential in oral cancer,nasopharyngeal carcinoma,liver cancer,colon cancer,bladder cancer,cervical cancer,and leukemia,mainly by inducing tumor cell apoptosis,increasing tumor cytotoxicity,inhibiting cell proliferation,inhibiting tumor cell metastasis and migration,and inducing cell regulatory enzyme cascade reactions.However,most preclinical experimental data on cinnabar root's anti-tumor mechanism have not been verified in high-quality,multi-sample,and repeated randomized controlled trials,and there are a lack of clinical research data on tumor prognosis,pharmacodynamics,and pharmacokinetics.Accurate research experiments and clinical trials should be designed to further explore the pharmacological effects of Ardisia Crenata Radix.