11 research outputs found

    The effect of short-term program of resisted treadmill walking on correlation between body composition parameters and estradiol, progesterone and cortisol hormone levels in osteoporotic postmenopausal women

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    Introduction: Anabolic hormone levels reduce with increasing age that may be responsible for many forms of change in body composition. Having a regular physical activity can be considered to restore the amount of decreased hormone level. The purpose of this study was to assess the effect of resisted submaximal treadmill walking program on body composition variables and estradiol, progesterone, and cortisol hormones in osteoporotic postmenopausal women. Materials and Methods: This randomized clinical trial study was performed on twenty seven volunteer sedentary osteoporotic postmenopausal women. They were randomly divided into three groups based on walking type on treadmill: simple walking (n = 8), weighted vest (n = 9), and control (n = 10). Training sessions consisted of 6 weeks submaximal walking program with 50-60% heart rate reserve about 30 minutes daily, three times a week. In weighted vest group, subjects wore a weight vest (4-8% of body weight). Body composition parameters (Body Mass Index or BMI, fat mass, and lean mass) and levels of estradiol, progesterone and, cortisol were measured before and after 6 weeks of training. All subjects in control group did not receive any intervention. Data were analyzed using SPSS (version 17). Results: Fat was decreased and lean body mass was increased significantly in weighted vest group (P = 0.027 and P = 0.005 respectively). Correlation between fat mass and lean body mass was significant in training groups (P = 0.010 and 0.05 respectively). Although after 6 weeks levels of estradiol and progesterone hormone did not have any significant change. Cortisol hormone did prominently change in simple walking and weighted vest groups (P = 0.049 and P = 0.032 respectively) but there is no significant correlation among hormones (P > 0.050). Conclusion: It can be concluded that both training groups showed a significant correlation between body composition parameters, but external added load resulted in more improvement in these selected parameters. Although the cortisol hormone level decreased significantly in both training groups, but this decrease was more prominent in simple walking group than control. Also, there was no positive relation between anabolic hormone levels and external added load. Keywords: Resisted walking, Postmenopausal women, Body composition, Estradiol, Progesterone, Cortiso

    Age-related hyperkyphosis: update of its potential causes and clinical impacts-narrative review.

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    The present study aims to qualitatively review the contributing factors and health implications of age-related hyperkyphosis. We conducted a narrative review of observational and cohort studies describing the risk factors and epidemiology of hyperkyphosis from 1955 to 2016 using the following key words: kyphosis, hyperkyphosis, posture, age-related hyperkyphosis, kyphotic posture, aetiology and causes. This review included 77 studies. Approximately 60-70 % of the most severe hyperkyphosis cases have no evidence of underlying vertebral compression fractures. Other proposed factors contributing to hyperkyphosis are degenerative disc disease, weakness of back extensor muscles and genetic predisposition. Strength and endurance of back extensor muscles are very important for maintaining normal postural alignment. Recent evidence suggests that age-related hyperkyphosis is not equivalent to spinal osteoporosis. Due to the negative impact of hyperkyphosis on physical function, quality of life and mortality rates, physicians should focus not only on osteoporosis, but also on age-related postural changes. More research about the relationship between spinal morphology and modifiable factors, especially the structural and functional parameters of trunk muscles, could further illuminate our understanding and treatment options for hyperkyphosis

    The Association Between Physical Function and Hyperkyphosis in Older Females: Protocol for a Systematic Review.

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    Identifying factors that impact physical function in older populations is important for the maintenance of good health with aging. Age-related hyperkyphosis, an excessive curvature in the thoracic spine, affects up to 40% of the older adults and is more common in older females than males. An association of age-related hyperkyphosis with impaired physical function has been reported in numerous studies, however, other studies have reported that a greater magnitude of kyphosis did not associate with impaired physical function. Given the inconsistencies regarding the impact of hyperkyphosis on physical function, the purpose of our study is to perform a systematic review of the existing studies in order to better describe the association between hyperkyphosis and physical function. Prospective and retrospective cohort, case-control, and cross-sectional studies which measure physical function by valid functional tests and questionnaires in older females will be included. We will search Scopus, ISI Web of Science, Cochrane Library, PubMed, Cumulative Index to Nursing and Allied Health Literature (CINAHL) and PEDro databases. Studies will be searched and then selected by two independent reviewers based on quality assessment tools from the National Heart, Lung, and Blood Institute (NHLBI). A meta-analysis will be conducted if data reported for individual studies allow. Specifically, if two or more individual studies provide measures of central tendency and variability from any of the categories of physical function measures, data will be gathered for meta-analysis. If a meta-analysis is not possible, data will be synthesized and described in a narrative form by size and variability of effect, direction of effect, and association with hyperkyphosis

    Detection of different variants of SARS-CoV-2 RNA (genome) on inanimate surfaces in high-touch public environmental surfaces

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    Abstract Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) disease started in late 2019 and still continues as a global pandemic, spreading among people around the world. There is limited knowledge about the role of contaminated environmental surfaces, especially high-touch public surfaces, in the transmission of the disease. The objective of the present investigation was detection of different variants (Delta, UK, and Omicron) of SARS-CoV-2 RNA (genome) on inanimate surfaces in high-touch public environmental surfaces in different seasons. Automated teller machines of banks (ATM), point-of-sale (POS) machine, gas station pump nozzles, and escalator handrails of malls were selected as high-touch environmental surfaces in public places. Overall, 75 samples were collected from these places and examined for the presence of SARS-CoV-2 RNA (genome), and 21 samples (28%) were positive. Although the role of fomite transmission of COVID-19 is understood, more studies should be conducted to determine the virus survival rate as well as the required efforts to prevent the spread of SARS-CoV-2 such as frequent cleaning and the use of efficient disinfectants on environmental surfaces, especially high-touch public places. In conclusion, the results address the importance of touching contaminated inanimate objects as well as transmission through environmental surfaces, and they could be used to establish an effective protocol to prevent indirect environmental transmission of SARS-CoV-2, slow down the spread of the virus, and reduce the risk of infection
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