درخت حوزه‌های تخصصی

Background: Exposure to high altitude causes significant stress in the functioning of cardiovascular and respiratory systems.Aim: The aim of this study was to investigate the changes in systolic and diastolic blood pressure (BP), heart rate (HR) and pulmonary volumes during the classic ascent of Damavand 5671 m peak.Materials and Methods: 14 healthy male climbers (age = 23.85±5.93 years, height = 175.5±5.91 cm, weight =71.35±8.20 kg) participated voluntarily in this study. BP, HR and lung volumes were measured in basic (2000 M), BC (3100 m) the first day, C1 (3650 m) the first day, BC (3100 m) the second day after the one-night stopover, C1 (3650 m) the second day, C2 (4100 m) the second day, C2 (4100 M) third day after the one-night stopover, C3 (5000 m) and, peak (5671 m). Data were compared by repeated measures test at the significant level of P≤0.05 and Bonferroni post hoc test.Results: The results of repeated measures analysis were significant for HR, systolic BP, diastolic BP and MVV (P<0.05), but not significant for FVC and FEV1 (P≥0.05). BP was high in the base camp and the first camp and gradually decreased. HR continued to increase significantly with increasing altitude. MVV increased with increasing altitude and is reduced after the one-night stopover in each height.Conclusion: It can be concluded that climbing with classic method increased the HR and decreased systolic and diastolic BP of climbers. It was able to induce adaptation in lung volumes of climbers.

Background : Beyond biological changes, ageing is often associated with degenerative and progressive changes in functional and physiological performance. Different types of exercise and rehabilitation method were introduced for resolving or preventing aging complications. Aim: The aim of this study was to investigate the effects of 8- week- dynamic neuromuscular stabilization (DNS) training on functional performance and quality of life in healthy elderly men. Materials and Methods: Twenty-eight old men were selected by convenience sampling manner and divided randomly in two groups of experimental (n=13, age: 65.8±4.3 years, height: 1.63±5.92 cm, weight: 69.1±7.4 kg) and control (n=15, age: 66.3±3.8 years, height: 1.64±4.89 cm, weight: 70.1± 6.3 kg). The experimental group received neuromuscular stabilization training for 8 weeks and 3 sessions for 1 hour in a clinic in Baghdad. Static balance (by functional reach test), dynamic balance (by time-up and go test), functional performance (by Berge test), and quality of life (by Leiden-Padua (LEIPAD e questionnaire) were measured before and after training. Data was analyzed by repeated measure ANOVA in SPSS software. P value was set at P ≤0.05. Results : The results showed that the intergroup interaction in the variables of functional performance (F=53.3, P =0.00), quality of life (F=65.04, P =0.00), static (F=106.7, P =0.00) and dynamic (F=26.99, P =0.00) balance was significant with the superiority of the DNS group. Conclusion: Postural control, functional performance and quality of life improved after training protocol. Therefore, DNS training can be used as a complementary method for rehabilitation of elderly.