Muscle Strength In Elderly Research Articles

Quadriceps and Hamstring Muscle Strength in Elderly based on Lifestyle

Background : Studies have shown that muscle strength will decline with aging and inactivity, with 1% to 3% loss of muscle strength each day. Nevertheless, different lifestyles have different effect on muscle strength. This study was conducted to analyze the differences in quadriceps and hamstring muscle strength in elderly from 60–79 years olds according to lifestyle. Methods : A cross-sectional study was conducted from September to November 2015. The subjects were 31 older persons from community who voluntarily participated the research procedure and were divided into 2 groups, active group and sedentary group according to International Physical Activity Questionnaire (IPAQ). Quadriceps and hamstring muscle strengths were measured using the push and pull dynamometer. The collected data were analyzed using the Wilcoxon rank sum test and the unpaired t-test. Results : This study discovered that the mean difference in hamstring muscle strength was 6.09 ± 0.70, p< 0.001; median difference in Quadriceps muscle strength was 5.00 (13.00, 6.50), p<0.001. Conclusions : There is a higher Quadriceps and Hamstring muscle strength in elderly active lifestyle compared to elderly sedentary lifestyle.

Relationship between Angiotensin Converting Enzyme Gene I/D Polymorphism and Muscle Strength in Elderly

Previous studies have indicated that the Angiotensin I converting enzyme (ACE) gene insertion/deletion (I/D) polymorphism could influence human physical performance. Furthermore, a study has suggested that ACE inhibitor treatment might decrease long-term decline in muscle strength in elderly women. Thus we hypothesized that the I allele of ACE gene I/D polymorphism, which relates to lower ACE activity, might be associated with slow-decline of muscle strength in the elderly. One hundred ninety elderly people aged 72 were recruited for this study. We assessed isometric knee extension strength, leg extension power and grip strength every year for 4 years. In the preliminary measurements, physical characteristics and muscle strength were not significantly different among three genotypes. Age-related changes of the isometric knee extension, leg extension power, grip strength were similar among three genotypes. The results of this investigation suggest that ACE gene I/D polymorphism does not affect age-related change of muscle strength in the elderly.

ACE Inhibitors May Preserve Muscle Strength in Elderly, Hypertensive Women

Maintaining physical functioning while aging can lead to positive benefits, such as the prevention of falls and related injuries.