Objective To explore the effect of training weights on energy expenditure(EE)among young males during squatting.Methods Twenty young males with strength training experience≥1 year were recruited and performed 3 sets of squats,with 5 repetitions per set,at 40%1RM,60%1RM and 80%1RM,respectively,with an interval of at least 72 hours.Oxygen uptake(VO2),heart rate,blood lactate,and the mechanical work on the barbell during squat exercises were measured before,during,and after each sets.Moreover,one-way repeated-measures ANOVA was used to compare EE differenc-es between different training weights,and two-way ANOVA was employed to examine the weight×method effect on metabolic equivalent(MET)values.Meanwhile,Pearson's correlation analysis was conducted to examine the correlation between EE and barbell mechanical work.Results(1)Training weight has significant effects on the total energy expenditure and EE during excess post-exercise oxy-gen consumption(EPOC)stage(P<0.001),while a significant increase was observed in the glycolytic EE only at 80%1RM and the aerobic EE with no less than 60%1RM(P<0.01 and P<0.05).(2)The percentage of EPOC-stage and glycolytic EE in the total energy expenditure was significantly higher than the aerobic EE(P<0.01),while that of aerobic EE at 40%1RM and 60%1RM was significantly higher than at 80%1RM(P<0.01).(3)Total energy expenditure(r=0.65,P<0.001)and EPOC-stage EE(r=0.68,P<0.001)showed moderate correlation with the mechanical work done.(4)Aerobic EE was significantly lower than the mechanical work done during squatting(P<0.001).Moreover,the MET values of squats calculated using aerobic EE during exercise at 40%-80%1RM was 2.42±0.54,2.89±0.87 and 2.7±0.56,while the MET ones calculated using the total energy expenditure reached 14.99±2.94,20.52±4.51 and 28.57±6.88.Conclusions Only EPOC-stage and glycolytic EE elevate with the increase of weight.Moreover,EE and the MET value scalculated using VO2 dur-ing exercise may under estimate the actual intensity of squat.Meanwhile,the accuracy of EE estima-tion may be improved by introducing the mechanical work.

OBJECTIVE:To conduct a Meta-analysis of evaluating the effects of whole-body vibration training on bone mineral density in postmenopausal women.METHODS:We searched CNKI,WanFang,PubMed,and Web of Science for studies on whole body vibration training to improve bone mineral density in postmenopausal women from database inception to April 3,2024,with the search terms whole-body vibration training,postmenopausal women,osteoporosis,and bone mineral density.Included indicators were lumbar spine(L1-L4,L2-L4),femoral neck,greater trochanter,Ward's triangle,and whole-body bone density.Revman 5.3 and R 4.3.3 were used for data analysis.RESULTS:(1)A total of 28 randomized controlled studies were included.(2)Vibration intensity:Vibration frequency＞20 Hz and amplitude＞2 mm could significantly increase the bone mineral density of the femoral neck,greater trochanter,Ward region,L1-L4 and L2-L4 lumbar vertebrae(P＜0.01,I2＞50％).(3)Training period and frequency:2-3 times per week,48-96 times per week,the bone mineral density at each site increased significantly(P＜0.05,I2＜50％).(4)Movement patterns:Dynamic training significantly increased bone mineral density in the femoral neck(P=0.03,/2=0％),greater trochanter(P＜0.001,I2=0％)and Ward region(P＜0.001,I2=0％);static squat significantly increased bone mineral density in L1-L4 lumbar spines(P＜0.001,I2=0％);and static multiple squatting was effective in improving bone mineral density in L2-L4 lumbar spines(P＜0.01,/2=0％)and the femoral neck(P=0.04,I2=34％).CONCLUSION:Whole-body vibration training has potential in improving bone mineral density in postmenopausal women.Recommended vibration frequencies and amplitudes are not less than 20 Hz and 2 mm,respectively,with no less than 48 training sessions.Static training is recommended for improving lumbar bone mineral density,while dynamic training is recommended for improving hip bone mineral density.

Objective This study aims to establish a transnational evaluation framework for academic competitiveness in obstetrics and gynecology,precisely positioning West China Second Hospital(WCSH)globally,identifying development bottle-necks and proposing strategic improvements.Methods Based on Elsevier's SciVal platform,bibliometric data from 12 top global institutions(7 Chinese,5 international)during 2020-2024 were analyzed.A three-dimensional indicator system was construc-ted:research output(publication volume,Q1 publications),academic impact(citations,citations per paper,FWCI),and col-laboration(international collaboration rate).Entropy weight method was employed to assign objective weights to calculate com-posite competitiveness scores.Results WCSH led in total publications(n=541)but underperformed in Q1 publication rate(34.57％vs domestic average 43.01％)and FWCI(0.67＜global baseline 1.0).Its international collaboration rate(2.8％)lagged significantly behind global peers(e.g.,NUH Singapore:53.5％).Entropy weighting identified Q1 publications(31.8％)and FWCI(28.5％)as core drivers.WCSH ranked 9th among 12 global institutions(4th domestically).Conclusion WCSH exhibits"scale advantage with quality gaps and collaboration deficit".Strategic recommendations include quality-fo-cused incentive reform,enhanced international networks,and dynamic monitoring.The study provides a data-driven transnational evaluation paradigm for the disciplinary development of obstetrics and gynecology.

Objective To explore the effect of training weights on energy expenditure(EE)among young males during squatting.Methods Twenty young males with strength training experience≥1 year were recruited and performed 3 sets of squats,with 5 repetitions per set,at 40%1RM,60%1RM and 80%1RM,respectively,with an interval of at least 72 hours.Oxygen uptake(VO2),heart rate,blood lactate,and the mechanical work on the barbell during squat exercises were measured before,during,and after each sets.Moreover,one-way repeated-measures ANOVA was used to compare EE differenc-es between different training weights,and two-way ANOVA was employed to examine the weight×method effect on metabolic equivalent(MET)values.Meanwhile,Pearson's correlation analysis was conducted to examine the correlation between EE and barbell mechanical work.Results(1)Training weight has significant effects on the total energy expenditure and EE during excess post-exercise oxy-gen consumption(EPOC)stage(P<0.001),while a significant increase was observed in the glycolytic EE only at 80%1RM and the aerobic EE with no less than 60%1RM(P<0.01 and P<0.05).(2)The percentage of EPOC-stage and glycolytic EE in the total energy expenditure was significantly higher than the aerobic EE(P<0.01),while that of aerobic EE at 40%1RM and 60%1RM was significantly higher than at 80%1RM(P<0.01).(3)Total energy expenditure(r=0.65,P<0.001)and EPOC-stage EE(r=0.68,P<0.001)showed moderate correlation with the mechanical work done.(4)Aerobic EE was significantly lower than the mechanical work done during squatting(P<0.001).Moreover,the MET values of squats calculated using aerobic EE during exercise at 40%-80%1RM was 2.42±0.54,2.89±0.87 and 2.7±0.56,while the MET ones calculated using the total energy expenditure reached 14.99±2.94,20.52±4.51 and 28.57±6.88.Conclusions Only EPOC-stage and glycolytic EE elevate with the increase of weight.Moreover,EE and the MET value scalculated using VO2 dur-ing exercise may under estimate the actual intensity of squat.Meanwhile,the accuracy of EE estima-tion may be improved by introducing the mechanical work.

Objective This study aims to establish a transnational evaluation framework for academic competitiveness in obstetrics and gynecology,precisely positioning West China Second Hospital(WCSH)globally,identifying development bottle-necks and proposing strategic improvements.Methods Based on Elsevier's SciVal platform,bibliometric data from 12 top global institutions(7 Chinese,5 international)during 2020-2024 were analyzed.A three-dimensional indicator system was construc-ted:research output(publication volume,Q1 publications),academic impact(citations,citations per paper,FWCI),and col-laboration(international collaboration rate).Entropy weight method was employed to assign objective weights to calculate com-posite competitiveness scores.Results WCSH led in total publications(n=541)but underperformed in Q1 publication rate(34.57％vs domestic average 43.01％)and FWCI(0.67＜global baseline 1.0).Its international collaboration rate(2.8％)lagged significantly behind global peers(e.g.,NUH Singapore:53.5％).Entropy weighting identified Q1 publications(31.8％)and FWCI(28.5％)as core drivers.WCSH ranked 9th among 12 global institutions(4th domestically).Conclusion WCSH exhibits"scale advantage with quality gaps and collaboration deficit".Strategic recommendations include quality-fo-cused incentive reform,enhanced international networks,and dynamic monitoring.The study provides a data-driven transnational evaluation paradigm for the disciplinary development of obstetrics and gynecology.

OBJECTIVE:To conduct a Meta-analysis of evaluating the effects of whole-body vibration training on bone mineral density in postmenopausal women.METHODS:We searched CNKI,WanFang,PubMed,and Web of Science for studies on whole body vibration training to improve bone mineral density in postmenopausal women from database inception to April 3,2024,with the search terms whole-body vibration training,postmenopausal women,osteoporosis,and bone mineral density.Included indicators were lumbar spine(L1-L4,L2-L4),femoral neck,greater trochanter,Ward's triangle,and whole-body bone density.Revman 5.3 and R 4.3.3 were used for data analysis.RESULTS:(1)A total of 28 randomized controlled studies were included.(2)Vibration intensity:Vibration frequency＞20 Hz and amplitude＞2 mm could significantly increase the bone mineral density of the femoral neck,greater trochanter,Ward region,L1-L4 and L2-L4 lumbar vertebrae(P＜0.01,I2＞50％).(3)Training period and frequency:2-3 times per week,48-96 times per week,the bone mineral density at each site increased significantly(P＜0.05,I2＜50％).(4)Movement patterns:Dynamic training significantly increased bone mineral density in the femoral neck(P=0.03,/2=0％),greater trochanter(P＜0.001,I2=0％)and Ward region(P＜0.001,I2=0％);static squat significantly increased bone mineral density in L1-L4 lumbar spines(P＜0.001,I2=0％);and static multiple squatting was effective in improving bone mineral density in L2-L4 lumbar spines(P＜0.01,/2=0％)and the femoral neck(P=0.04,I2=34％).CONCLUSION:Whole-body vibration training has potential in improving bone mineral density in postmenopausal women.Recommended vibration frequencies and amplitudes are not less than 20 Hz and 2 mm,respectively,with no less than 48 training sessions.Static training is recommended for improving lumbar bone mineral density,while dynamic training is recommended for improving hip bone mineral density.

Objective To identify inflammation-related genes in atrial fibrillation(AF)and explore the possible role and mechanism of these genes and infiltrating immune cells in the development of AF.Methods A series of bioinformatics analysis combined with machine learning algorithms to identify biomarkers of AF,the receiver operating characteristic(ROC)curves were used to verify the prediction and diagnostic value of key genes,and Spearman correlation analysis was used to clarify the correlation between key genes and infiltrating immune cells.Results 593 differential genes(| log2(fold change,FC)|>1,P<0.05),7 immune cell subtypes(P<0.05)were selected,190 immune-related differential genes were obtained,3 biomarkers(IGF1,PTGS 2 and PPARG),and the correlation analysis showed that 3 markers were significantly associated with infiltrating immune cells(P<0.05).Conclusion IGF1,PTGS2 and PPARG are inflammation-related genes of AF,which are speculated to be closely related to the process and pathway of immune cell infiltration.

Anaplastic thyroid cancers (ATC) are a rapid growing and highly lethal form of thyroid cancer. Distant metastases of ATC are detected in about half of patients. Clinically, it is very rare to metastasize to the kidney. The most common initial symptoms of ATC are a palpable neck mass and accompanying compression symptoms of the upper aerodigestive tract. A 68-year-old patient was referred with a huge renal mass, which was detected during the evaluation of abdominal pain. Left total nephrectomy was performed. Histologically, the kidney tumor was a metastatic anaplastic thyroid carcinoma. To our knowledge, it is the first case of occult ATC presenting as a huge renal mass.

Objective To investigate the curative efficacy of adjuvant therapy of atorvastatin in chronic subdural haematoma ( CSDH ) patients treated with trepanation and drainage and its effects on level of serum neuron specific enolase ( NSE ) .Methods 98 patients of CSDH who received therapy in our hospital from January 2014 to April 2016 were selected as research objects.Retrospectively analyzing their clinic materials,those patients were divided into the control group(n=46)and the observation group(n=52)according to therapeutic schemes.The control group were given therapy of trepanation and drainage.Besides that,the observation group were given atorvastatin additionally.2 months later,curative efficacy,China stroke scale (CSS)score and ability of daily life(ADL)score were compared between the two groups.And level of serum NSE between the two groups before treatment and after 7 days were compared.Results The total therapeutic efficacy ratio of CSDH in the observation group was 88.5%,which was statistically higher than that of 71.7% in the control group(P<0.05).2 months after the treatment,in comparison with the control group,the observation group has lower CSS score(15.89 ±3.24 points vs.19.21 ±4.17 points)and higher ADL score(95.24 ±11.36 points vs.89.05 ±10.12 points)with both statistical differences( P<0.05 ) .7 days after the treatment, level of serum NSE in the observation group was statistically lower than that in the control group (10.38 ±2.35 U/mL vs.14.06 ±2.68 U/mL,P <0.05).Conclusion Adjuvant therapy of atorvastatin is effective for CSDH patients treated with trepanation and drainage,and it could improve neurologic function,ability of daily life and reduce level of serum NSE.

Objective To investigate the effect of 23.4% hypertonic saline(HTS)on intracranial pressure(ICP), cerebral peffusion pressure(CPP), cerebral blood flow(CBF)in poor-grade patients with subarachnoid hemorrhage(SAH).Methods Sixteen patients(Glasgow coma score ≤ 8)with poor-grade SAH received 23.4% hypertonic saline intravenously for elevated ICP.ICP, mean arterial pressure(MAP), CPP and the middle cerebral artery flow velocity(FV)were observed and recorded before and at 30, 60, 90,120, 150, 180 min after the injection respectively.Results Thirty minutes postinfusion, a significant increase in MAP, CPP, FV was seen together with a decrease in ICP(P<0.05).ICP remained reduced for 180 minutes, CPP and FV remained elevated for 90 minutes(P < 0.05).Conclusions HTS can significantly decrease ICP and improve CBF in patients with poor-grade subarachnoid hemorrhage and may be used for reversal of pathophysiologic changes caused by cerebral ischemia.