Journal of Exercise Rehabilitation最新文献

Although various dietary behavioral issues affecting healthy development of adolescents have been studied, research on dietary behaviors of adolescent athletes is still limited. This study investigated the relationship between dietary behaviors and body size, energy intake, and nutrient intake in 66 first-year male middle school athletes (12.6-13.8 years old). Dietary behaviors were assessed using the nutritional quotient for adolescents (NQ-A), and energy and nutrient intakes were derived from 3-day food records including 2 weekdays and 1 weekend day. Dietary data were analyzed using CAN-pro 6.0 (Korean Nutrition Society). The results showed that the mean energy intake was 2,301.27±643.57 kcal, which was lower than the estimated energy requirement for this age group. In addition, the intake levels of dietary fiber, vitamin A, vitamin C, calcium, and magnesium were less than 70% of the Korean Dietary Reference Intake. In particular, calcium (r=0.31, P=0.021) and dietary fiber (r=0.28, P=0.038) showed a weak but positive correlation with the NQ-A score. Calcium (F=3.201, P=0.049) and dietary fiber (F=3.376, P=0.042) intake levels were significantly higher in athletes with higher NQ-A grades than in middle or low-grade athletes. However, no significant correlation was observed between NQ-A and physique. In conclusion, when evaluating the dietary behavior of middle school male athletes using NQ-A, athletes with better dietary behaviors were found to consume relatively more calcium and dietary fiber. However, it is important to note that a high NQ-A grade does not necessarily indicate sufficient nutrient intake.

The purpose of this study was to investigate the effect of combining low-intensity treadmill exercise with naringenin treatment on the expression of axonal regrowth-related proteins following sciatic nerve injury (SNI). The extracts were evaluated for cytotoxicity and cell viability using the 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide assay, and the effects of the extracts were analyzed in vitro using primary cultured Schwann cells and dorsal root ganglion neurons (DRGs). In vivo, axonal regrowth-related protein expression levels and neurite outgrowth were assessed through Western blot and immunofluorescence staining, respectively. The results indicated that neither extract exhibited cytotoxicity. In primary cultured Schwann cells, 10 μM naringin and 10 μM/50 μM naringenin significantly increased growth associated protein-43 (GAP-43) expression, while in DRGs, both naringin and naringenin treatments resulted in increased neurite length. For in vivo experiment, all animals were divided into the vehicle group, the naringin-treated group post-SNI (Gin), the naringenin-treated group post-SNI (Genin), the naringin and exercise group post-SNI (Gin+Ex), and the naringenin and exercise group post-SNI (Genin+Ex). Naringenin treatment after early SNI enhanced GAP-43 expression. Following 14 days of exercise combined with treatment, both GAP-43 and phosphorylated extracellular signal-regulated kinase levels were significantly increased in the Genin and the Genin+Ex groups, whereas phosphorylated-protein kinase B significantly increased only in the Genin+Ex group. Our findings suggest that naringenin, when used in conjunction with low-intensity treadmill exercise, may effectively promote the expression of axonal growth-related proteins following SNI.

This study examined the relationship between moderate-to-vigorous physical activity (MVPA), sedentary behavior (SB), and metabolic syndrome, employing both cross-sectional and Mendelian randomization methods to enhance causal inference. The cross-sectional analysis included adults aged 20 years and older with arthritis (n=4,227) from the National Health and Nutrition Examination Survey and assessed the associations between MVPA, SB, and metabolic syndrome. Mendelian randomization analysis used genome-wide association studies to validate causal relationships, employing instrumental variables selected from single nucleotide polymorphisms linked to accelerometer-based physical activity (fraction of time with accelerations >425 milli-gravities) and SB. The primary Mendelian randomization methods included inverse variance weighting and Bayesian Weighted Mendelian Randomization. Sensitivity analyses, including Mendelian Randomization-Egger intercept test, the weighted median method, and Mendelian Randomization Pleiotropy RESidual Sum and Outlier, were conducted to ensure result robustness. Cross-sectional analysis revealed a significant association between higher levels of MVPA and reduced SB with a lower prevalence of metabolic syndrome. Participants in the high MVPA/low SB group demonstrated lower odds of metabolic syndrome (odds ratio [OR], 0.40; 95% confidence interval [CI], 0.29-0.56), hypertension (OR, 0.55; 95% CI, 0.40-0.75), fasting glucose (OR, 0.52; 95% CI, 0.35-0.77), and waist circumference (OR, 0.34; 95% CI, 0.22-0.54). Mendelian randomization analysis confirmed a causal relationship, showing that physical activity decreases risk factors for metabolic syndrome, while SB exacerbates them. This study emphasizes the critical roles of regular physical activity and reduced SB in mitigating the risk of metabolic syndrome, especially among older adults with arthritis.

This study examined the effects of a self-management program (exercise therapy, dietary education, and aromatherapy) on physical symptoms (pain, daily living function, exercise function), quality of life, and sleep disturbances in knee osteoarthritis patients at a clinic in Andong city. A total of 66 patients (33 experimental, 33 control) with stage 2 or higher knee osteoarthritis participated. Data were analyzed using a statistical program, including descriptive statistics, frequencies, percentages, means, χ² test, t-test, and Fisher exact test and Bonferroni, and analysis of variance to examine the research objectives and measurement variables. Significant improvements were observed in the experimental group for pain, daily living functions, exercise functions, and quality of life (F=62.73, P<0.001; F=22.68, P<0.001; F=8.19, P=0.006; F=14.02, P<0.001, respectively). Additionally, significant interactions between time points and group effects were found, indicating differences in the patterns of change in physical symptoms, daily living functions, exercise functions, and quality of life between the groups (F=34.56, P<0.001; F=15.42, P<0.001; F=5.82, P=0.019; F=11.77, P=0.001). For sleep disturbances improved in the experimental group (F=16.79, P<0.001), but no significant group-time interactions were found (F=0.01, P=0.920). These findings suggest that self-management program effectively reduce pain and enhance physical function, quality of life, and sleep, emphasizing the need for structured, ongoing educational interventions for knee osteoarthritis patients.

This study examined the weekly frequency of exercise participation among older adults in South Korea and identified the factors influence this frequency. A frequency analysis compared sociodemographic characteristics based on weekly frequency of exercise participation. A linear regression analysis identified factors influencing participation in exercise less than 3 times a week and participation in no exercise. A total of 312 participants (mean age, 80.47±6.80 years), women exercised less frequently than men. Increased age correlated with lower exercise participation, with the lowest rates among individuals aged 86 or older. Higher education levels were associated with more frequent exercise, as individuals with 16 or more years of education exhibiting the highest participation rates. Compared to individuals aged 65-75, individuals aged 81-85 and those 86 or older showed significantly higher odds ratios for insufficient exercise. Conversely individuals with 16 or more years of education had significantly lower odds ratios. Economic, psychological, emotional, environmental, and physical factors, as well as information-seeking ability, were key barriers to exercise participation. These findings suggest that women and individuals aged 81 or older need more encouragement to engage in frequent exercise. Furthermore, information-seeking ability and economic, psychological, environmental, and exercise-related/personal factors significantly impact exercise participation among older adults.

Anterior cruciate ligament reconstruction (ACLR) leads to quadriceps neuromuscular dysfunction, including impaired force control and muscle degradation. Neuromuscular electrical stimulation (NMES) is widely used in rehabilitation to improve muscle mass and strength; however, its effects on neuromuscular functions and muscle quality, such as motor unit (MU) behavior and force steadiness (FS), remain unclear. This study investigated the effects of NMES on neuromuscular function and muscle quality in individuals with ACLR who could walk normally. Ten male ACLR patients underwent NMES 3 times weekly for 6 weeks, with 30 contractions per session. Neuromuscular function was assessed via FS, maximum voluntary isometric contraction (MVIC), and MU behavior in the rectus femoris and vastus lateralis. Muscle quality was evaluated using muscle thickness (MT), echo intensity (EI), and ultrasound texture features. Measurements were taken at baseline and weeks 3 and 6. NMES significantly improved MVIC, FS, MU behavior, and muscle quality (MT, EI, and homogeneity) on the ACLR side, with significant interaction effects observed. At week 3, MVIC and FS showed no significant improvement; however, structural and qualitative muscle changes were evident. NMES effectively enhanced neuromuscular function, MU behavior, and muscle quality impaired by ACLR. However, a 3-week intervention may not be sufficient for optimal neuromuscular recovery, highlighting the need for extended NMES protocols.

The effects of maternal exercise on hippocampal neurogenesis, synaptic protein expression, and gut microbiome composition in the offspring of older females were investigated. Male offspring from female C57BL/6 mice were divided into four groups: offspring of young female group (CON), offspring of exercised young female group, offspring of advanced-age female group (AMA), and offspring of exercised advanced-age female group (AMA+EX). The exercised group received 8 weeks of treadmill training before and during pregnancy. Male offspring were assessed at 4 weeks of age. Hippocampal neurogenesis was assessed by 5-bromo-2'-deoxyuridine/neuronal double immunofluorescence staining. Expression of synaptic plasticity-related proteins, including brain-derived neurotrophic factor (BDNF) and postsynaptic density protein 95 (PSD-95), was analyzed by Western blot. Gut microbiome composition and diversity were assessed using 16S rRNA sequencing of fecal samples. Offspring born to AMA females had significantly reduced hippocampal neurogenesis and lower expression levels of BDNF and PSD-95 compared to the CON group. In the AMA+EX group, maternal treadmill exercise significantly improved these deficits, restoring both neurogenesis and synaptic protein expression. In contrast, gut microbiota analysis showed that microbial richness and alpha diversity were reduced in the offspring of exercised females, despite the relatively high diversity in the CON and AMA groups, especially in the AMA+EX group. Older mothers impair hippocampal neurogenesis and synaptic protein expression in offspring, and alter gut microbial diversity. Maternal exercise may alleviate age-related neurodevelopmental disorders, but may also reduce microbial diversity in the offspring's gut.

Fatigue is a state of difficulty maintaining voluntary activity. Cortisol, which is essential for stress regulation, can cause tissue damage when elevated for long periods of time, which is a common problem for office workers in stressful environments. Sleep quality is important for health and cognitive function, while sleep deprivation increases the risk of physical and mental health disorders. Gyrokinesis combines circular, spiral, and wave movements influenced by yoga, tai chi, and ballet to provide a calming effect on the sympathetic nervous system. This study investigated the effects of Gyrokinesis exercise on lower extremity edema, muscle strength, fatigue, and sleep quality in sedentary office workers. Twenty-seven adult women aged 20-40 years were randomly assigned to a Gyrokinesis exercise group (n=14) or a control group (n=13). The exercise group participated in 60-min Gyrokinesis sessions twice a week for 8 weeks, while the control group used elastic compression stockings during their working hours. Results showed a significant decrease in fatigue and an improvement in sleep quality in the exercise group. Cortisol and serotonin levels showed a significant between-group interaction effect, with within-group changes observed only in the exercise group. Sleep quality indices improved significantly over time. In conclusion, Gyrokinesis exercise has the potential to improve physical and psychological well-being in sedentary office workers by positively influencing fatigue, sleep quality, and related hormone levels.

Regular participation in regularly performed physical activity (PA) is recommended for proper development of rapidly changing physical and psychological status of adolescents. Despite the importance of proper PA, various prioritizing factors in adolescents' daily lives such as competitive academic performance deter regular participation. This study has been conducted to analyze impact of PA on academic performance (grades) for middle to high school female adolescents. 20th Korea Youth Risk Behavior Survey data with 8 factors were utilized for the study. 25,668 female adolescents across six grade levels (M1, M2, M3, H1, H2, H3) were grouped to sedentary (SG: 2 or fewer days/wk) and physically active (PG: 3 or more days/wk) groups based on their weekly PA days and compared. Also, each incremented day of PA (0- through 7-day PA) was further compared. Although SG and PG showed mixed results, incremented PA days showed either significantly better academic performances or no difference. Significant poor academic performances were shown for 7-day PA compared to 0-day PA for M2 (2.88±1.19 vs. 3.25±1.17), M3 (2.84±1.20 vs. 3.23±1.23), H3 (3.02±1.08 vs. 3.51±1.09). Although body mass index (BMI) of each grade level was within normal range for all PA groups, significantly increased BMI was shown in SG groups. Moreover, perceived effort on weight control (effort) was shown for all 7-day PA groups compared to all 0-day PA groups. In conclusion, regularly performed PA may positively influence or have no effect on academic performance. However, excessive PA aimed at weight control may have a negative impact.