Journal of Exercise Rehabilitation最新文献

{"title":"Functional assessment of respiratory muscles and lung capacity of CrossFit athletes.","authors":"Saulo Cesar Vallin Fabrin,&nbsp;Marcelo Palinkas,&nbsp;Evandro Marianetti Fioco,&nbsp;Guilherme Gallo Costa Gomes,&nbsp;Eloisa Maria Gatti Regueiro,&nbsp;Gabriel Pádua da Silva,&nbsp;Selma Siéssere,&nbsp;Edson Donizetti Verri,&nbsp;Simone Cecilio Hallak Regalo","doi":"10.12965/jer.2244594.297","DOIUrl":"https://doi.org/10.12965/jer.2244594.297","url":null,"abstract":"<p><p>CrossFit is a high-intensity training related to physical fitness and respiratory capacity that can promote changes in lung function. This cross-sectional study was aimed at evaluating respiratory muscle strength, electromyographic (EMG) activity, and lung capacity in CrossFit athletes. Thirty subjects aged between 25 and 35 years were divided into groups: CrossFit athletes (n=15) and sedentary individuals without comorbidities (n=15). Respiratory muscle strength was evaluated using maximal inspiratory and expiratory pressures, lung capacity, and EMG of the sternocleidomastoid, serratus anterior, external intercostal, and diaphragm muscles at respiratory rest, maximal inspiration and expiration, and respiratory cycle. Data were tabulated and subjected to statistical analyses (<i>t</i>-test and Spearman test, <i>P</i><0.05). Respiratory muscle strength on EMG of the sternocleidomastoid, serratus, external intercostal, and diaphragm muscles at the respiratory cycle and maximal forced inspiration and expiration were higher in the CrossFit athletes group than in the sedentary group without comorbidities. CrossFit athlete group showed significantly strong positive correlation between maximal inspiratory and expiratory muscle strengths (Spearman rho= 0.903, <i>P</i>=0.000), with increasing muscle strength during inspiration favoring an increase in strength during expiration. The forced vital capacity (FVC) and forced expiratory volume in 1 sec (FEV₁) also showed a significantly high positive correlation (Spearman rho=0.912, <i>P</i>=0.000) in the CrossFit athletes group, showing that higher FVC favors higher FEV₁. The results of this study suggest that improved fitness is based on increased respiratory muscle strength on EMG in CrossFit athletes.</p>","PeriodicalId":15771,"journal":{"name":"Journal of Exercise Rehabilitation","volume":"19 1","pages":"67-74"},"PeriodicalIF":1.9,"publicationDate":"2023-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ftp.ncbi.nlm.nih.gov/pub/pmc/oa_pdf/78/d0/jer-19-1-67.PMC9993009.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9096516","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Moderate- to fast-walking improves immunocytes through a positive change of muscle contractility in old women: a pilot study.","authors":"Sihwa Park,&nbsp;Sang-Kyun Park,&nbsp;Yong-Seok Jee","doi":"10.12965/jer.2244512.256","DOIUrl":"https://doi.org/10.12965/jer.2244512.256","url":null,"abstract":"<p><p>This study aimed to examine whether compared with a program without walking, intervention programs with three types of walking can improve the muscle property and immunocytes in elderly women. Thirty-two subjects were randomly assigned to control group (CON), slow walking group (SWG), moderate walking group (MWG), and fast walking group (FWG). Three types of walking on treadmill were 30 min a day, 5 days/wk for 12 weeks. Muscle contraction time (Tc), maximum displacement (Dm), and immunocytes were tested by tensiomyography and flow cytometry. After the intervention, FWG had an increasing tendency in the muscle mass compared with other three groups. Tc of biceps femoris (BF) decreased in CON and SWG, while Tc of BF in MWG and FWG (30.58%±23.71%) increased. It was similar in the rectus femoris (RF). Although Dm of BF and RF increased in CON and SWG, those decreased in MWG and FWG. Leucocytes of CON and SWG had a decreasing tendency, those of MWG (9.65%±13.01%) and FWG (13.01%± 13.58%) increased. In the neutrophil, only CON decreased, whereas the three groups showed an increasing tendency. Helper T cell was increased only in FWG (19.61%±19.94%), showing significant differences between groups (<i>P</i>=0.009, <i>η</i> ²=0.378). Natural killer cell was improved in SWG and MWG but showed a clear increase in FWG (75.76%±63.57%). It might be confirmed that walking for elderly increases the muscle property of the lower legs as they walk faster, which might be expected to improve the immunocytes function.</p>","PeriodicalId":15771,"journal":{"name":"Journal of Exercise Rehabilitation","volume":"19 1","pages":"45-56"},"PeriodicalIF":1.9,"publicationDate":"2023-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ftp.ncbi.nlm.nih.gov/pub/pmc/oa_pdf/98/3b/jer-19-1-45.PMC9993006.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9096515","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The past and future of <i>Journal of Exercise Rehabilitation</i>.","authors":"Chang-Ju Kim","doi":"10.12965/jer.2346044.022","DOIUrl":"https://doi.org/10.12965/jer.2346044.022","url":null,"abstract":"","PeriodicalId":15771,"journal":{"name":"Journal of Exercise Rehabilitation","volume":"19 1","pages":"1"},"PeriodicalIF":1.9,"publicationDate":"2023-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ftp.ncbi.nlm.nih.gov/pub/pmc/oa_pdf/a5/db/jer-19-1-1.PMC9993010.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9086807","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Effect of combined intervention of exercise and autologous bone marrow stromal cell transplantation on neurotrophic factors and pain-related cascades over time after sciatic nerve injury.","authors":"Joo-In Yu,&nbsp;Yeong-Hyun Cho,&nbsp;Tae-Beom Seo,&nbsp;Young-Pyo Kim","doi":"10.12965/jer.2244006.003","DOIUrl":"https://doi.org/10.12965/jer.2244006.003","url":null,"abstract":"<p><p>The purpose of this study was to determine whether combined inter-vention of treadmill exercise and bone marrow stromal cell (BMSC) transplantation would affect the expression of neurotrophic factors in the sciatic nerve injury (SNI) and neuropathic pain-related cascades in ipsilateral lumbar 4-5 dorsal root ganglion (DRG) during the early or late stage of sciatic nerve regeneration. The rats were randomly divided into the normal control group (CONT, n=6), sedentary group (SS, n=24), exercise group (SE, n=24), BMSC transplantation group (SB, n=24), BMSC transplantation+exercise group (SBE, n=24) 1, 2, 3, and 5 weeks after SNI. Single dose of 5×10⁶ harvested BMSC was injected into the injury area sing by a 30 gauge needle. Treadmill exercise was performed at a speed of 8 m/min for 30 min once a day. Tropomyosin-receptor kinase B, brain-derived neurotrophic factor and ciliary neurotrophic fac-tor were significantly upregulated in the SE and SBE groups at 1- and 2-week postinjury than those in the CONT and SS groups, and SB and SBE groups continuously kept up proinflammatory cytokines until the late stage of regeneration. Nuclear factor kappa-light-chain-enhancer of activated B cells, interleukin and tumor necrosis factor alpha in ipsi-lateral DRG were progressively decreased by exercise alone application and/or BMSC transplantation at early and late stage of regeneration. Present results provide reliable information that combined intervention of treadmill exercise and BMSC transplantation might be one of the effective treatment strategies for recovering sciatic nerve injury-induced neuropathic pain over time.</p>","PeriodicalId":15771,"journal":{"name":"Journal of Exercise Rehabilitation","volume":"19 1","pages":"19-26"},"PeriodicalIF":1.9,"publicationDate":"2023-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ftp.ncbi.nlm.nih.gov/pub/pmc/oa_pdf/66/d9/jer-19-1-19.PMC9993005.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9096510","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Online clinical skills education using a wearable action camera for medical students.","authors":"Oh Young Kwon","doi":"10.12965/jer.2244460.230","DOIUrl":"https://doi.org/10.12965/jer.2244460.230","url":null,"abstract":"<p><p>The purpose of this study is to analyze medical students' satisfaction and educational effectiveness after real-time online clinical skills education using a wearable action camera. One hundred eighteen third-year medical students participated in this study. The education program consisted of clinical skills (wound management and vascular access procedures) and a medical interview with a simulated patient. The author wore the head-mounted action camera throughout the class. A systematic questionnaire survey was issued to the students after the education program to analyze the educational satisfaction and effectiveness. This education program showed their high educational satisfaction. The online environment was also mostly positive except for some negative comments about video quality. In the educational satisfaction, though the comparative satisfaction with the face-to-face skill class was slightly lower, the rest of the questionnaire items also showed high relative satisfaction. Online video education using a wearable camera could be a good modality that can replace a face-to-face class when it is impossible to open the class.</p>","PeriodicalId":15771,"journal":{"name":"Journal of Exercise Rehabilitation","volume":"18 6","pages":"356-360"},"PeriodicalIF":1.9,"publicationDate":"2022-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ftp.ncbi.nlm.nih.gov/pub/pmc/oa_pdf/e8/bf/jer-18-6-356.PMC9816617.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9146574","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Abdominal and lower extremity muscles activity and thickness in typically developing children and children with developmental delay.","authors":"Sun-Young Ha,&nbsp;Yun-Hee Sung","doi":"10.12965/jer.2244484.242","DOIUrl":"https://doi.org/10.12965/jer.2244484.242","url":null,"abstract":"<p><p>We investigated abdominal and lower extremity muscle activity and thickness in typically developing children and children with developmental delays. A total of 35 children participated: typically developing peers (n=13), children with hypotonia (n=10), and children with spasticity (n=12). Muscle activity and thickness were measured at rest and during activity. Electromyography was used to measure abdominal and lower extremity muscle activities, and abdominal muscle thickness was measured using ultrasonography. There was a significant difference between the groups in the activity of the rectus abdominis and quadriceps muscles at rest and during activity (<i>P</i><0.05). There was a significant difference between the groups in the thickness of the external oblique and transversus abdominis muscles during activity (<i>P</i><0.05). There was a significant difference between the groups in the thickness of the external oblique and internal oblique muscles in the sitting position (<i>P</i><0.05). Therefore, the characteristics of muscle tone should be considered when applying interventions to children with developmental delay.</p>","PeriodicalId":15771,"journal":{"name":"Journal of Exercise Rehabilitation","volume":"18 6","pages":"369-375"},"PeriodicalIF":1.9,"publicationDate":"2022-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ftp.ncbi.nlm.nih.gov/pub/pmc/oa_pdf/6c/e4/jer-18-6-369.PMC9816619.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9146571","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Effect of resistance circuit training on health-related physical fitness, plasma lipid, and adiponectin in obese college students.","authors":"Eun-Dam Lee,&nbsp;Tae-Beom Seo,&nbsp;Young-Pyo Kim","doi":"10.12965/jer.2244402.201","DOIUrl":"https://doi.org/10.12965/jer.2244402.201","url":null,"abstract":"<p><p>The purpose of this study is to investigate the effects of resistance circuit training on health-related physical fitness, plasma lipid and adiponectin in obese college students. Twenty male college students participated in this study and they were randomly divided into the sedentary group (SG, n=10) and the resistance circuit training group (RCG, n=10). The exercise group underwent the resistance circuit training program for 60 min 3 times a week for 12 weeks, while the sedentary group continued activities of daily living as usual. The levels of health-related fitness, blood lipid, and adiponectin were measured twice before and after the experiment. To analyze the statistically significance of collected data, Two-way repeated measure analysis of variance was used to determine the changes in the groups over the training period. A paired <i>t</i>-test was used to verify the difference within each group, and an independent <i>t</i>-test was used to verify the difference between the groups. In this study, the body composition including body fat mass, percent body fat and body mass index were significantly decreased in RCG compared to those in SG, and the health-related fitness showed a significant difference between RCG and SG. In addition, RCG positively modulated blood concentration of total cholesterol, triglycerides, high-density and low-density lipoprotein cholesterol. However, plasma adiponectin concentration did not show any significant differences between the two groups. Therefore, the present data suggested that resistance circuit training might be regulator to improve health-related physical fitness and decrease the level of plasma lipid in obese male college students.</p>","PeriodicalId":15771,"journal":{"name":"Journal of Exercise Rehabilitation","volume":"18 6","pages":"382-388"},"PeriodicalIF":1.9,"publicationDate":"2022-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ftp.ncbi.nlm.nih.gov/pub/pmc/oa_pdf/39/5c/jer-18-6-382.PMC9816610.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10581566","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Correlation between physical efficiency index using Harvard step test and heart rate variation in college students.","authors":"Dong-Hwan Kim,&nbsp;Yeong-Hyun Cho,&nbsp;Tae-Beom Seo","doi":"10.12965/jer.2244400.200","DOIUrl":"https://doi.org/10.12965/jer.2244400.200","url":null,"abstract":"<p><p>The purpose of this study is to investigate the relationship between physical efficiency index (PEI) calculated by the Harvard step test and heart rate variation (HRV), and to identify parameters of HRV that can predict PEI in college students. Sixteen college students were participated in this study and they were randomly divided into two groups; higher PEI group (HPEI, n=6) and lower PEI group (LPEI, n=10). To investigate the relationship between PEI and HRV, we were measured HRV and Harvard step test. HRV test was the resting, immediately, 15 min and 30 min after the Harvard step test using electrocardiography device polyG-I. Relationship between PEI and HRV were determined Pearson correlation coefficient, and multiple regression analysis was performed for examining HRV parameters to predict PEI. As shown in the result, not only PEI was negatively correlated with root mean squared differences between adjacent normal RR intervals (RMSSD), but had a positive correlation with low-frequency/high-frequency, but also normalized low frequency (normLF), the ratio of LF, and RMSSD, the change in RR interval showed a significant difference at each time point of measurement according to PEI levels. But, there were no significant differences among the HRV variables except normLF and RMS-SD. Our findings suggest a critical information that PEI calculated by the Harvard step test can be used as an index to predict the autonomic nerve function, and high PEI may have a positive effect on changes in autonomic nerve activity during recovery after exercise intervention.</p>","PeriodicalId":15771,"journal":{"name":"Journal of Exercise Rehabilitation","volume":"18 6","pages":"389-394"},"PeriodicalIF":1.9,"publicationDate":"2022-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ftp.ncbi.nlm.nih.gov/pub/pmc/oa_pdf/b7/f0/jer-18-6-389.PMC9816613.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10581562","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Polydeoxyribonucleotide ameliorates alcoholic liver injury though suppressing phosphatidylinositol 3-kinase/protein kinase B signaling pathway in mice.","authors":"Young-A Cho,&nbsp;Il-Gyu Ko,&nbsp;Jun-Jang Jin,&nbsp;Lakkyong Hwang,&nbsp;Sang-Hoon Kim,&nbsp;Jung Won Jeon,&nbsp;Myoung Joo Yang,&nbsp;Chang-Ju Kim","doi":"10.12965/jer.2244504.252","DOIUrl":"https://doi.org/10.12965/jer.2244504.252","url":null,"abstract":"<p><p>Polydeoxyribonucleotide (PDRN), which is adenosine A_2A receptor agonist, facilitates healing and inhibits inflammation and apoptosis. The effect of PDRN on alcoholic liver injury (ALI) was evaluated focusing on the phosphatidylinositol 3-kinase (PI3K)/protein kinase B (Akt) signaling pathway. The mice were given daily oral administration of 50% ethanol at a dose of 4 g/kg during 8 weeks. After 4 weeks of alcohol intake, 200 μL of normal saline containing 8-mg/kg PDRN was intraperitoneally administered 3 times a week for 4 weeks. To determine whether the action of PDRN occurs through the adenosine A_2A receptor, 8-mg/kg 3,7-dimethyl-1-propargylxanthine (DMPX) with PDRN was treated. The concentration of aspartate aminotransferase (AST) and alanine aminotransferase (ALT) was detected. For liver histopathological score, hematoxylin and eosin staining was conducted. Enzyme-linked immunoassay was used to measure cyclic adenosine-3',5'-monophosphate (cAMP) concentration. PI3K and Akt expression was determined using Western blot analysis. In the results, PDRN treatment suppressed AST and ALT level in serum and liver tissue, and improved damaged liver tissue and decreased histological score. PDRN application inhibited the expression of phosphorylated PI3K/Akt signaling pathway. The increasing effect of PDRN on cAMP level ats as a mechanism for ALI treatment. Co-treatment of DMPX with PDRN did not reduce apoptosis, causing no improvement in liver function. As a result of this experiment, PDRN has the potential to be selected as a therapeutic agent for ALI.</p>","PeriodicalId":15771,"journal":{"name":"Journal of Exercise Rehabilitation","volume":"18 6","pages":"350-355"},"PeriodicalIF":1.9,"publicationDate":"2022-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ftp.ncbi.nlm.nih.gov/pub/pmc/oa_pdf/be/6f/jer-18-6-350.PMC9816614.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10581563","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Effect of 8-week high-intensity intermittent running exercise and weight training on muscle and DNA damage in male and female ski major college students.","authors":"Chenhong Lin,&nbsp;Young-Je Sim","doi":"10.12965/jer.2244470.235","DOIUrl":"https://doi.org/10.12965/jer.2244470.235","url":null,"abstract":"<p><p>This study assessed changes in blood muscle damage indicators and DNA damage indicators in lymph and urine after 8 weeks of high-intensity intermittent running and weight training in male and female college students majoring in skiing. This study aimed to find an effective training method by investigating differences in the effectiveness between men and women. A total of 20 male and female ski major college students conducted short-term high-intensity intermittent running and weight training in the morning and afternoon, respectively, 3 days a week for 8 weeks for 24 times in total. After 8 weeks of high-intensity intermittent running and weight training, changes in DNA damage indicators in the lymph and urine and muscle damage indicators in the blood were analyzed. The creatine kinase level significantly differed at rest pre-graded exercise testing (GXT) and 60 min of recovery post-GXT after training from that before training between the male and female groups. Although lactate dehydrogenase (LDH) levels decreased in both groups over time, no significant differences in LDH were found between the two groups. Second, DNA 8-hydroxydeoxyguanosine (8-OHdG) in the lymph was significantly different between the two groups at rest pre-GXT and 60 min of recovery post-GXT. 8-OHdG in the urine was significantly lower in the female group only at 60 min of recovery post-GXT. Partial sex differences were found in the reduction of muscle damage and DNA damage after 8 weeks of high-intensity intermittent running and weight training.</p>","PeriodicalId":15771,"journal":{"name":"Journal of Exercise Rehabilitation","volume":"18 6","pages":"376-381"},"PeriodicalIF":1.9,"publicationDate":"2022-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ftp.ncbi.nlm.nih.gov/pub/pmc/oa_pdf/d8/67/jer-18-6-376.PMC9816618.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10581565","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}