Exercise Physiology
Mohaddeseh Bashtani; Sina Radaei; Rozhan karami; Nazanin Zahra Azizi; Kamian Khazai
Abstract
Background and purpose: Physical activity is effective on the serum level of the monoamine neurotransmitter dopamine and also reduces psychological disorders such as depression. The aim of this study was to investigate the effect of eight weeks of walking on plasma levels of dopamine and the level of ...
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Background and purpose: Physical activity is effective on the serum level of the monoamine neurotransmitter dopamine and also reduces psychological disorders such as depression. The aim of this study was to investigate the effect of eight weeks of walking on plasma levels of dopamine and the level of depression in elderly women with Alzheimer's disease. Method: In this semi-experimental study, 20 women with Alzheimer's disease with an average age of 73.5 ± 7.72 years who were suffering from moderate to severe depression according to the Beck questionnaire with the opinion of a psychiatrist in a targeted manner and the sample available for were selected to participate in the research. The subjects were randomly divided into two equal groups of 10 people, including the experimental group (walking) and the control group (without regular physical activity). The subjects in the walking group exercised on the treadmill for eight weeks three sessions per week and each session lasted 30-45 minutes with an intensity of 60-75% of the maximum heart rate. Before and after the exercise intervention, blood samples were taken from the cubital vein of all participants in a 12-hour fasting state. Serotonin and dopamine levels were evaluated by ELISA method. The results were extracted using the paired t test and covariance at a significance level of 0.5. Findings: 8 weeks of walking led to a significant increase in dopamine levels (p=0.005) and a significant decrease in depression (p=0.001) in the experimental group compared to the control group. Conclusion: It seems that walking can have positive effects on some neurotransmitters and reduce the level of depression in elderly women with Alzheimer's disease.
Exercise Physiology
hasan Naghizade Ghezel Ahmad; Hamidreza Fallah Yakhdani; solaleh hoseinzade; alireza babaei mazreno
Abstract
The purpose of the present research is the effect eight week exercise resistance increasing and one period lack of practice so from it on Indicators FS % , RWT the ventricle left in women low It was mobility. The research method was a semi-experimental research that was conducted in a field-laboratory ...
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The purpose of the present research is the effect eight week exercise resistance increasing and one period lack of practice so from it on Indicators FS % , RWT the ventricle left in women low It was mobility. The research method was a semi-experimental research that was conducted in a field-laboratory manner. Number 32 person of women Sedentary people who were able to regularly participate in the exercise protocol and criteria for entering the research were randomly selected to the face random in two group : 1- Practice resistant ( 16 people ) , 2- control ( 16 people ) were placed. Anthropometric characteristics, body composition and structural indices and percentage of left ventricular muscle fiber shortening ( FS % ), relative thickness of the left ventricular wall ( RWT ) They were measured with an echocardiography device in three stages (before the start of training, at the end of 8 weeks of training and at the end of 4 weeks of non-training) using standard tools and echocardiography device. The training protocol was implemented for 12 weeks, which included 8 weeks of training program with three sessions per week and 4 weeks of non-training after that. Collected data using statistical tests Independent t , analysis of variance with repeated measurements at the significance level of p > 0.05 were analyzed with SPSS 21 software .The results showed that
Nafiseh Barjasteh-Asgari; Hashem Piri; Minoo Azizi-Ashraf; Rahman Sheikhhoseini
Abstract
Purpose: Muscle flexibility is a component of physical fitness. Using traditional tools in muscle length evaluation tests creates challenges. Therefore, the use of smartphones and health-related software as an alternative method has become widespread. This study aimed to investigate smartphones' intra- ...
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Purpose: Muscle flexibility is a component of physical fitness. Using traditional tools in muscle length evaluation tests creates challenges. Therefore, the use of smartphones and health-related software as an alternative method has become widespread. This study aimed to investigate smartphones' intra- and inter-rater reliability and validity for measuring hamstring muscle length. Method: In a blinded study design, two researchers measured hamstring flexibility through four types of tests on each of the 22 asymptomatic participants with a total of 44 lower limbs. The measurements were compared between the traditional goniometer method and the practical smartphone application method. The intraclass correlation coefficient (ICC) was used to evaluate the reliability of each smartphone measurement, and Bland-Altman analysis was used to check the measurement errors. The validity of the two methods was also investigated. Results: Intra- and inter-rater reliability (ICC≥0.8) were good to almost perfect. In intra-rater reliability, PSLR angle showed consistent imprecision; other tests were free of systematic error and measurement error. The inter-rater reliability revealed a constant error in the right leg's PKE angle. A good to excellent correlation (r = 0.817–0.699) was observed in all the measured values, indicating the two methods' validity. Conclusion: These findings support from intra- and inter-rater reliability and validity of both instruments when measuring hamstring muscle length.
Exercise Physiology
shima sharareh; Pantea Kianmeh
Abstract
Background: This study aimed to investigate the effects of a six-week myofascial stretching training program on the flexibility of posterior chain muscles in individuals with MS, with a focus on evaluating the cumulative effects of increasing the number of sessions.Methods: A total of 30 female participants ...
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Background: This study aimed to investigate the effects of a six-week myofascial stretching training program on the flexibility of posterior chain muscles in individuals with MS, with a focus on evaluating the cumulative effects of increasing the number of sessions.Methods: A total of 30 female participants with MS were randomly assigned to one of two groups: a group receiving myofascial stretching training twice per week (n=15), and a group receiving training four times per week (n=15). Flexibility of the posterior chain muscles was assessed using the Sit and Reach (S&R) test at baseline, after 6 weeks of the intervention.Results: The results showed a significant improvement in S&R scores in both intervention groups. The group receiving training four times per week demonstrated greater flexibility improvements than the group receiving training twice per week, suggesting a cumulative effect of increasing the number of sessions.Conclusion: A six-week myofascial stretching training program can effectively improve the flexibility of posterior chain muscles in individuals with MS. Increasing the frequency of sessions from twice per week to four times per week leads to greater cumulative improvements in flexibility. These findings have important implications for the design of rehabilitation programs targeting flexibility in individuals with MS.
Exercise Physiology
Bakhtyar Tartibian; Leila Fasihi; Rasoul Eslami
Abstract
Background: Osteoporosis is a decrease in bone density among older adults that can lead to painful fractures and disability. People in developing countries are not interested in examining bone mineral density until fractures occur. Therefore, the aim of this study was to investigate the relationship ...
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Background: Osteoporosis is a decrease in bone density among older adults that can lead to painful fractures and disability. People in developing countries are not interested in examining bone mineral density until fractures occur. Therefore, the aim of this study was to investigate the relationship between the indicators affecting osteoporosis with femoral mineral density in active and inactive elderly men.Methods: A total of 45 active and 45 inactive men with an age range of 70 to 85 years with medical records and clinical trials were selected. Anthropometric characteristics and serum indices of the subjects were used as effective indicators of osteoporosis. Pearson correlation coefficient was used to find the relationship between the indicators and the mineral density of the femur. SPSS software version 26 was used for data analysis.Results: The results of the present study showed that in both groups of active and inactive elderly men, a significant relationship was observed between anthropometric characteristics and serum indices with bone mineral density (P≤0.05). No significant relationship was found between other indicators.Conclusion: In general, the results show that there is a significant relationship between bone density and weight, body mass index, age, calcium, phosphorus and serum alkaline phosphatase of all subjects. Therefore, in adulthood and old age, these blood and anthropometric variables can be used to identify people at risk for osteoporosis.
Exercise Physiology
Mojtaba Ghorbani Asiabar; Morteza Ghorbani Asiabar; Alireza Ghorbani Asiabar
Abstract
Purpose: This study aimed to investigate the relationship between gut microbiome composition, athletic performance, and post-exercise recovery in endurance athletes following probiotic supplementation. Methodology: In this randomized, double-blind, placebo-controlled study, 40 male endurance runners ...
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Purpose: This study aimed to investigate the relationship between gut microbiome composition, athletic performance, and post-exercise recovery in endurance athletes following probiotic supplementation. Methodology: In this randomized, double-blind, placebo-controlled study, 40 male endurance runners (age: 28.3 ± 5.2 years) were randomly assigned to either a probiotic (n=20) or placebo (n=20) group for 8 weeks. The probiotic group received a daily supplement containing a blend of Lactobacillus acidophilus, Bifidobacterium lactis, and Lactobacillus plantarum (20 billion CFU total). Fecal samples were collected before and after the intervention and analyzed using 16S rRNA gene sequencing. Athletic performance was assessed through VO2max testing and time to exhaustion. Recovery was evaluated by measuring delayed onset muscle soreness (DOMS) and creatine kinase (CK) levels. Results: The probiotic group showed a significant increase in gut microbial diversity (Shannon index: p<0.01) and relative abundance of beneficial bacteria such as Bifidobacterium and Lactobacillus (p<0.001).Significant improvements were observed in VO2max (4.7%, p<0.05)and time to exhaustion (7.2%, p<0.01) in the probiotic group compared to placebo. The probiotic group also demonstrated reduced DOMS (23%, p<0.05)and lower peak CK levels (18%, p<0.01) relative to the placebo group. Multiple regression analysis revealed that changes in Akkermansia muciniphila and Bifidobacterium abundances were significant predictors of performance improvement (R² = 0.68, p<0.001).Conclusion: This study provides evidence that gut microbiome modulation through probiotic supplementation can enhance athletic performance and accelerate post-exercise recovery in endurance runners. These findings suggest that targeted manipulation of the gut microbiome may be a novel strategy for improving sports performance and recovery.
Exercise Physiology
Bahman Ebrahimi_Torkamani; Marefat Siahkohian
Abstract
Purpose: The aim of the present study was to investigate the relationship between two key components of exhausting running at Heart Rate Deflection Point (HRDP) in girls.Methodology: A number of 40 girls of physical education of Mohaghegh Ardabili University were selected as subjects with an age range ...
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Purpose: The aim of the present study was to investigate the relationship between two key components of exhausting running at Heart Rate Deflection Point (HRDP) in girls.Methodology: A number of 40 girls of physical education of Mohaghegh Ardabili University were selected as subjects with an age range of 19 to 23 years. Then, they ran individually in four separate sessions with an intensity of 70, 80, 90 and 100% of heart rate breaking point with a minimum interval of 72 hours. Using non-linear regression, the relationship between exercise volume and intensity was analyzed.Findings: The findings showed that the inverse relationship between the volume (as a dependent variable) and the intensity (as an independent variable) of exhausting running at the HRDP of young girls' follows the non-linear 2nd degree function.Discussion: According to the results of this study, it can be said that the inverse relationship between the volume and the intensity of running is non-linear. The noteworthy point is that in this estimation, the training volume was fitted based on the intensity, the relevant equation, which has a practical aspect for sports science trainers and researchers.
Exercise Physiology
Rasoul Eslami; Arezoo Soleymani fard; Diako Heidary
Abstract
In this study, we investigated the effects of resistance training types on clinical and functional indices in older individuals with Osteosarcopenia. In this Systematic Review study, a systematic searching strategy was used in information databases such as Pub Med, Web of Science, Scopus, Google Scholar, ...
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In this study, we investigated the effects of resistance training types on clinical and functional indices in older individuals with Osteosarcopenia. In this Systematic Review study, a systematic searching strategy was used in information databases such as Pub Med, Web of Science, Scopus, Google Scholar, Cochrane, and Ambace, all of the studies were extracted by using specific keywords such as Strength exercise, Exercise training, Resistance exercise, Resistance training, Strength training, Physical activity, Osteosarcopenia, Aging, Older adult, Elderly which were published on 7th August 2023. After preliminary screening, surveying of complete text, and assessment of critical studies, scrutinized articles were related to inclusion criteria. Finally, 17 papers were selected for this study.According to the present study, Resistance training for Osteosarcopenia older individuals has an effective result, and it can improve older patients’ performance and clinical status. However, it has to be mentioned that it needs further study in the contexts of Resistance training and Osteosarcopenia syndrome in elderly adults.Keywords: Aging, Exercise Training, Osteosarcopenia, Resistance training.
