International journal of sports medicine最新文献

{"title":"Exploring the load-velocity profile with sprint swimming performance and sex differences.","authors":"Jesús J Ruiz-Navarro, Dennis-Peter Born, Adrián Febles-Castro, Ana Gay, Óscar López-Belmonte, Esther Morales-Ortíz, Gracia López-Contreras, Raúl Arellano","doi":"10.1055/a-2559-6956","DOIUrl":"10.1055/a-2559-6956","url":null,"abstract":"<p><p>This study aimed to investigate the relationship between the load-velocity profile and sprint swimming performance and kinematics, explore the inter-relationships of the load-velocity profile variables and blood lactate concentrations [La^-] and dry-land strength (pull-ups), and examine sex-based differences. Twenty-seven swimmers (15 males: 19.2±3.7 y; 50 m front-crawl 550±70 World Aquatics points; 12 females: 17.7±2.4 y; 50 m front-crawl 552±63 World Aquatics points) underwent a 50 m front-crawl all-out swim test, a load-velocity profile test, and a pull-up test. Theoretical maximum velocity was associated with sprint swimming performance (<i>r</i>>0.863 and <i>p</i><0.001), but not the theoretical maximum load (<i>L</i> ₀) or the slope (<i>p</i>>0.05) for both sexes. An association between kinematics during the load-velocity profile test and free swimming was weakened as the load increased, with the correlation coefficient (<i>r</i>) decreasing from 0.929 to 0.403. Theoretical maximum velocity and theoretical maximum load were primarily associated with both sexes with the first (<i>r</i>>0.950 and <i>p</i><0.001) and last (<i>r</i>>0.849 and <i>p</i><0.001) semi-tethered trials, respectively. Only in females [La^-] was associated with the theoretical maximum load and slope (<i>r</i>>0.573 and <i>p</i><0.05). Males exhibited greater values than females in all the assessed variables (<i>p</i><0.05) except for stroke rates and [La^-]. The load-velocity profile is a valuable tool for assessing performance in both sexes. Kinematic parameters were related between semi-tethered and free swimming; however, association diminished with increasing load.</p>","PeriodicalId":14439,"journal":{"name":"International journal of sports medicine","volume":" ","pages":"595-603"},"PeriodicalIF":2.0,"publicationDate":"2025-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143982894","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A Device-Free Approach to Program Resistance Training in Women: The Level of Effort Method.","authors":"Eduardo R Borrego, Jesús G Pallarés, Alejandro Martínez-Cava, Alejandro Hernández-Belmonte","doi":"10.1055/a-2624-0771","DOIUrl":"10.1055/a-2624-0771","url":null,"abstract":"<p><p>This research analyzed the validity of the level of effort method to practically prescribe relative intensity (%1RM) and velocity loss (%VL) in women. We examined the (i) inter- and intrasubject (test-retest) variabilities in the number of repetitions to failure (nRM) at different%1RMs and (ii) the relationship between the repetitions being completed and%VL being incurred. Analyses covered three%1RMs (65-75-85%1RM), two exercises [bench press (BP) and squat (SQ)], and two groups of women with different strength levels (high and low, <i>n</i>=12 per group). To analyze the inter- and intrasubject variabilities, women completed two rounds of repetition-to-failure tests against the aforementioned%1RMs. Velocity was monitored to examine the relationship between the repetitions being completed and%VL incurred. For both strength groups, exercises, and%1RMs examined, the nRM showed very low inter- (95% confidence interval≤4 repetitions) and intrasubject (standard error of measurement≤1.7 repetitions) variabilities. Very close fits were found for individual's relationships between the repetitions being completed and the%VL incurred for the low (BP, mean <i>R</i> ²=0.975, SQ, mean <i>R</i> ²=0.938) and high (BP, mean <i>R</i> ²=0.975, SQ, mean <i>R</i> ²=0.934) strength groups. In conclusion, the level of effort method is a technology-free approach to program%1RM and%VL in women.</p>","PeriodicalId":14439,"journal":{"name":"International journal of sports medicine","volume":" ","pages":""},"PeriodicalIF":2.0,"publicationDate":"2025-06-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144173579","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Does Muscle Length Influence Regional Hypertrophy? A Systematic Review and Meta-Analysis.","authors":"Dorian Varovic, Milo Wolf, Brad J Schoenfeld, James Steele, Jozo Grgic, Pavle Mikulic","doi":"10.1055/a-2615-4935","DOIUrl":"https://doi.org/10.1055/a-2615-4935","url":null,"abstract":"<p><p>The aim of this review was to examine how mean muscle length during resistance training (RT) influences regional muscle hypertrophy. Three databases were screened for relevant studies that manipulated muscle length through range of motion or exercise selection and evaluated regional muscle hypertrophy. Twelve studies conducted among young adults were included in the Bayesian meta-analysis. Standardized mean differences (SMDs) indicated trivial hypertrophic effects estimated with relatively high precision between proximal (25% muscle length; SMD: 0.05 [95% quantile interval {QI}:-0.07, 0.16]; exponentiated log-transformed response ratio [lnRR]: 0.57% [95% QI:-1.92%, 3.24%]), mid-belly (50% muscle length; SMD: 0.07 [95% QI:-0.02, 0.15]; exponentiated lnRR: 1.22% [95% QI:-0.77%, 3.22%]), and distal (75% muscle length; SMD: 0.09 [95% QI:-0.01, 0.19]; exponentiated lnRR: 1.88% [95% QI:-0.44%, 4.34%]) sites. The effects of RT at longer muscle lengths showed an increasing trend from proximal to distal sites. However, the percentage of posterior distributions falling within regions of practical equivalence was high across all sites. Our findings suggest that RT at both longer and shorter mean muscle lengths produces similar hypertrophic effects. Relatively small differences between \"shorter\" and \"longer\" mean muscle length (an average difference of 21.8% mean muscle length) between conditions/groups in the examined studies warrant caution when interpreting the findings.</p>","PeriodicalId":14439,"journal":{"name":"International journal of sports medicine","volume":" ","pages":""},"PeriodicalIF":2.0,"publicationDate":"2025-06-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144505679","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Relationship Between Dryland Profile and Kinematics of Breaststroke Pullout Techniques.","authors":"Mário J Costa, Ana Gay, Francisco A Ferreira, Joao Paulo Vilas Boas, Catarina C Santos","doi":"10.1055/a-2625-4264","DOIUrl":"https://doi.org/10.1055/a-2625-4264","url":null,"abstract":"<p><p>The aim of this study was twofold: (1) to make a sex comparison on dryland strength, range of motion (ROM), and kinematics of the breaststroke underwater pullout and (2) to analyze the relationship between dryland strength, ROM, and kinematics of different pullout techniques in both male and female swimmers. Sixteen trained swimmers, nine males (20.67±2.71 years old) and seven females (18.86±0.83 years old), performed 3×25 m breaststroke using two pullout breaststroke techniques: Fly-Kick first and Combined. A speedometer and video footage were used to assess the pullout phase kinematics and the total underwater sequence. Dryland assessments included the maximum jump height, the isometric peak strength of internal shoulder rotation (IR) (at 90°), and knee extensors (at 60°). The joint ROM of knee flexion (KF), plantar flexion (PF), and hip internal rotation were also considered. Velocity-time curves of both techniques according to sex were dissected using statistical parametric mapping. An independent <i>t</i>-test was used to compare differences between swimmers' sex in kinematic and dryland variables while the Pearson correlation coefficient (<i>r</i>) was used for associations. Higher instantaneous velocity at ~24-26, ~31-42, and 54.5-63% during the glide phase duration was found for males in the Fly-Kick first technique. Males also displayed a higher peak (3.29 m·s^-1) and mean velocity (1.58-1.65 m·s^-1) in the total underwater path or in the glide and propulsion phases of both pullout techniques. While males performed better in jump height (33.89 cm) and peak strength of IR (172-176 N), females showed a higher ROM mostly in PF (161-165°). A high and positive correlation between dryland strength and kinematics in both pullout techniques was found in males. The ROM failed to correlate with pullout kinematics, except for the KF in females during the recovery phase (<i>r</i>=0.82-0.86). In conclusion, male breaststrokers perform better than females on dryland strength but not in joint ROM, which provides them with an advantage mainly in the Fly-Kick first underwater pullout.</p>","PeriodicalId":14439,"journal":{"name":"International journal of sports medicine","volume":" ","pages":""},"PeriodicalIF":2.0,"publicationDate":"2025-06-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144505682","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Achilles Tendon Echo Intensity Changes Across a 5-Day Training Cycle in Elite Athletes.","authors":"Saule Salatkaite Urbone, Leonardo Cesanelli, Sigitas Kamandulis, Danguole Satkunskiene","doi":"10.1055/a-2617-6942","DOIUrl":"10.1055/a-2617-6942","url":null,"abstract":"<p><p>The aim of this study was to determine if a 5-day training cycle in professional sports team athletes caused acute and subacute alterations in Achilles tendon (AT) echo intensity (EI). The study included 24 men and 24 women of football, handball, and volleyball teams from the top national leagues. During their respective competition periods, eight players from each team were monitored in every training session over a 5-day training cycle. It involved monitoring AT EI, cross-sectional area with ultrasound, subjective feelings of fatigue, and perceived exertion throughout the training cycle. The results revealed a significant acute and subacute effect on EI at distal (<i>p</i><0.001), middle (<i>p</i><0.001), and proximal (<i>p</i><0.001) AT locations. The acute effect had a significant impact on the subacute changes in EI at all locations (<i>p</i><0.001). A significant interaction of athletes' biological sex, the acute effect was only observed in the distal AT (<i>p</i>=0.013). The study revealed a significant decrease in AT EI following team sports training sessions for men and women. A consistently reduced EI of the AT during the 5-day training cycle suggests that repetitive loading likely induces structural changes in the tendon.</p>","PeriodicalId":14439,"journal":{"name":"International journal of sports medicine","volume":" ","pages":""},"PeriodicalIF":2.0,"publicationDate":"2025-06-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144119798","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Impact of COVID-19 infection on physical performance of soccer players: a systematic review.","authors":"Koulla Parpa, Marcos A Michaelides, Ana Carolina Paludo, Karuppasamy Govindasamy, Konstantina Intziegianni","doi":"10.1055/a-2605-5626","DOIUrl":"https://doi.org/10.1055/a-2605-5626","url":null,"abstract":"<p><p>This review sought to identify the impact of COVID-19 infection on the physical performance parameters of soccer players. The systematic review was conducted based on the PRISMA guidelines. The following databases were searched up to the end of October 2024: MEDLINE, Scopus, Mendeley, SPORTDiscus, and Google Scholar. Studies conducted on professional and semi-professional adult male soccer players were considered. For a study to be included, it had to report at least one outcome measure both before and after COVID-19 infection. At the end of the screening procedure, a total of 11 studies met the inclusion criteria. The reviewed studies on V̇O2 max showed mixed results. One study reported a significant (<i>p</i><0.01) decrease 60 days post-infection, while others found no change or even an increase 1-year post-pandemic. Pulmonary function assessment revealed a significant (<i>p</i><0.01) increase in respiratory work, whereas one study found no significant changes at rest. GPS (Global Positioning System) -based studies reported a significant (<i>p</i><0.05) reduction in high-intensity accelerations, decelerations, and high-speed running post-COVID-19, while one study found no differences between infected and non-infected players. Strength, power, and anaerobic power showed no significant decline. These findings should be interpreted with caution due to the small sample sizes and limited number of studies.</p>","PeriodicalId":14439,"journal":{"name":"International journal of sports medicine","volume":" ","pages":""},"PeriodicalIF":2.0,"publicationDate":"2025-06-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144309890","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Rectus femoris and vastus intermedius muscle asymmetries following ACL reconstruction.","authors":"Manal Fasih, Caleb Voskuil, Christopher Rivas, Bobby Lee, Caitlin Nadolny, Lindsey Dietrich, Joshua Carr","doi":"10.1055/a-2604-7425","DOIUrl":"10.1055/a-2604-7425","url":null,"abstract":"<p><p>Anterior cruciate ligament reconstruction induces deleterious neuromuscular alterations. Musculoskeletal ultrasonography provides an accessible method to quantify muscle size and quality in patients with anterior cruciate ligament reconstruction who suffer from persistent skeletal muscle atrophy. This study compares rectus femoris and vastus intermedius muscle thicknesses and echo intensities using extended field-of-view ultrasonography in individuals with a history of anterior cruciate ligament reconstruction versus non-injured controls. Twenty-six individuals with previous anterior cruciate ligament reconstruction and 20 controls were participated in this study. Extended field-of-view ultrasonography was used to analyze the muscle thickness in the proximal, middle, and distal regions of the thigh, while the echo intensity was measured to assess the muscle quality. Findings indicate significant asymmetries in the muscle thickness (<i>p</i><0.01 and <i>η</i> _p ²=0.312) and echo intensity (<i>p</i>=0.024 and <i>η</i> _p ²=0.111) for the anterior cruciate ligament reconstruction group, favoring the uninvolved leg, with no site-specific differences between groups. Results show muscle-specific size differences, with greater vastus intermedius muscle thickness than rectus femoris muscle thickness in controls (<i>p</i><0.01 and <i>d</i>=0.609), but no difference between muscles in either leg of the anterior cruciate ligament reconstruction group (<i>p</i>>0.05 and <i>d</i>=0.094). Overall, these results highlight unique skeletal muscle changes between the biarticular rectus femoris and the monoarticular vastus intermedius following anterior cruciate ligament reconstruction, likely reflecting postoperative deficiencies in knee extensor function.</p>","PeriodicalId":14439,"journal":{"name":"International journal of sports medicine","volume":" ","pages":""},"PeriodicalIF":2.0,"publicationDate":"2025-06-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144019344","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Evaluating the optimal height for hamstring activity in the maximum-speed single-leg bridge test.","authors":"Yuto Sano, Masashi Kawabata, Yuki Sumiya, Yuto Watanabe, Yuto Uchida, Tomoaki Inada, Masaki Murase, Tomonori Kenmoku, Hiroyuki Watanabe, Naonobu Takahira","doi":"10.1055/a-2537-6350","DOIUrl":"10.1055/a-2537-6350","url":null,"abstract":"<p><p>Hamstring strain injuries often occur during high-speed movements; yet, no functional test reliably induces rapid hamstring contractions. This study aimed to determine the optimal platform height in the maximum-speed single-leg bridge test to maximize hamstring activation. This cross-sectional study included 26 healthy male recreational athletes. Participants performed the maximum-speed single-leg bridge test using 20, 40, and 60 cm platforms at a maximal speed. The conventional single-leg bridge test was performed using a 60 cm platform at any speed. Measurements included buttock-raising speed; muscle activity of the semitendinosus, biceps femoris, and gluteus maximus using surface electromyography; and heel-bearing force. The maximum-speed single-leg bridge test showed significantly faster buttock-raising speeds (0.7-1.0 m/s) than the single-leg bridge test (0.5 m/s; <i>p</i><0.01). Semitendinosus and biceps femoris muscle activities were significantly higher during the maximum-speed single-leg bridge test using 60 and 40 cm platforms (>90% maximal voluntary isometric contraction) than during the single-leg bridge test and the maximum-speed single-leg bridge test using a 20 cm platform (<i>p</i><0.01). Gluteus maximus muscle activity during the maximum-speed single-leg bridge test was approximately double than that during the single-leg bridge test (<i>p</i><0.01). The heel-bearing force was significantly higher during the maximum-speed single-leg bridge test than during the single-leg bridge test, and the maximum-speed single-leg bridge test using the 40 cm platform showed the highest force (<i>p</i><0.01). The maximum-speed single-leg bridge test using 40 and 60 platforms required higher hamstring activity, with faster buttock-raising speeds and greater heel-bearing force than the single-leg bridge test and the maximum-speed single-leg bridge test using the 20 platform.</p>","PeriodicalId":14439,"journal":{"name":"International journal of sports medicine","volume":" ","pages":"430-436"},"PeriodicalIF":2.0,"publicationDate":"2025-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12148497/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143399137","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Photobiomodulation before blood flow restriction exercises: a randomized clinical trial.","authors":"Joao Vitor Ferlito, Marcos Vinicius Ferlito, Nicholas Rolnick, Daniel Mauer Ferreira, Ernesto P Leal-Junior, Thiago De Marchi, Catia Santos Branco","doi":"10.1055/a-2564-8876","DOIUrl":"10.1055/a-2564-8876","url":null,"abstract":"<p><p>This study investigate the effects of photobiomodulation therapy applied before exercises with blood flow restriction during low-load or high-load exercises on muscle adaptations, muscle damage, and redox status. Forty-five untrained men were randomly assigned to four groups: photobiomodulation therapy-blood flow restriction (30% of maximal isometric voluntary contraction), placebo-blood flow restriction (30% of maximal isometric voluntary contraction), photobiomodulation therapy-high-load exercise (80% of maximal isometric voluntary contraction), and placebo-high-load exercise (80% of maximal isometric voluntary contraction). Elbow flexion exercises were performed twice weekly for 8 weeks, followed by a 4-week detraining period. After 8 weeks, photobiomodulation therapy-blood flow restriction, photobiomodulation therapy-high-load exercises, and placebo-blood flow restriction groups significantly increased muscle strength (<i>p</i><0.05) with non-significant increases in the placebo-high-load exercise group. The photobiomodulation therapy-blood flow restriction group demonstrated a superior magnitude of effects compared to the placebo-high-load exercise (+10.2%) and placebo-blood flow restriction (+7%; <i>p</i><0.008) groups. Only the placebo-blood flow restriction group reduced the fatigue index post-intervention. During the detraining period, both blood flow restriction groups maintained superior muscle strength compared to baseline levels. The placebo-high-load exercise group exhibited higher creatine kinase activity post-exercise compared to the other groups. No significant changes were observed in nitric oxide, thiobarbituric acid reactive substances, carbonylated proteins, or total antioxidant capacity immediately post-exercise. However, the total antioxidant capacity levels were increased in all groups after 8 weeks of exercise and following a 4-week detraining period. Overall, the photobiomodulation therapy-blood flow restriction group promoted greater gains in muscle strength compared to the placebo-high-load exercise and placebo-blood flow restriction groups.</p>","PeriodicalId":14439,"journal":{"name":"International journal of sports medicine","volume":" ","pages":"482-492"},"PeriodicalIF":2.0,"publicationDate":"2025-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144015859","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Proprioceptive neuromuscular facilitation warm-ups: a key to improved isokinetic performance.","authors":"Muhammed Yıldız, Mehmet Çebi","doi":"10.1055/a-2541-2768","DOIUrl":"10.1055/a-2541-2768","url":null,"abstract":"<p><p>This study examined the immediate effects of proprioceptive neuromuscular facilitation warm-ups on isokinetic strength, endurance, and body balance in 50 football players. Data collection spanned four sessions, each separated by full rest. The isokinetic strength of the hip, knee, and ankle flexion and extension was measured using a dynamometer at 60°/s, 180°/s, and 240°/s. Endurance was assessed at 240°/s through 25 repetitions, analyzing peak torque changes. On the first day, participants performed general warm-ups followed by balance and strength tests. Subsequent sessions repeated these tests with additional measurements. Results showed that proprioceptive neuromuscular facilitation warm-ups significantly improved the static and dynamic balance compared to other methods. Peak torque measurements at all speeds also highlighted the superior effectiveness of proprioceptive neuromuscular facilitation warm-ups. Additionally, this warm-up approach provided greater acute enhancement in knee joint isokinetic endurance. In conclusion, proprioceptive neuromuscular facilitation warm-ups increased the isokinetic strength, endurance, and balance in football players. Incorporating proprioceptive neuromuscular facilitation warm-ups into football training especially for lower body preparation is recommended. Combining them with active warm-ups may further boost acute performance.</p>","PeriodicalId":14439,"journal":{"name":"International journal of sports medicine","volume":" ","pages":"412-421"},"PeriodicalIF":2.0,"publicationDate":"2025-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143663421","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}