Effect of walking on body composition and aerobic fitness in non-trained men of middle age
Journal Title: Antropomotoryka. Journal of Kinesiology and Exercise Sciences - Year 2011, Vol 21, Issue 55
Abstract
[b]Introduction.[/b] An effect of physical exercise may be assessed by level of aerobic fitness (AF) and body composition (BC).[b]Aim of the work.[/b] In this study we verify the moving program based on walking for influence AF, and BC in middle-aged men.[b]Material and methods.[/b] The energy output of 6270 kJ/week was respected by construction of individual intervention moving programs. The exercise intensity at a level of 50 to 70% VO2max (HR ranged from 65 to 90% of HRmax or 130–170 beats · min–1) was used in a group of middle aged non-trained men (n = 68, age = 45.7 ± 4.2 years, BM = 79.1 ± 7.1 kg, height = 176.3 ± 4.8, BF = 19.1±4.3%, ECM/BCM = 0.84 ± 0.05, VO2max · kg–1 = 33.1±5.3 ml · kg–1 · min–1). The duration of exercise session ranged from 20 to 50 min, and exercise was performed 3–5 times a week.[b]Results.[/b] The moving programs consisted aerobic walking (min 80% of whole exercise) or cycling (min 10% of total exercise) at the level of 50 to 70% VO2max. The duration of exercise session ranged from 20 to 50 min, and training was performed 3–5 times a week. The time spent at exercise per week ranged between 85–250 min. The energy output of exercise ranged from 4390 kJ to 7780 kJ [mean 6440 (960) kJ] per week. After 5 months of training, slight but significant BM loss [mean 3.5 (1.9) kg; (p < 0.05)], FFM increase [mean 2.6 (1.2) kg; (p < 0.05)], and BF decrease [mean 3.2 (1.6)%; (p < 0.05)] was found. Aerobic fitness increased significantly by 17 (7.3)%; (p < 0.01) of initial value. Similarly as VO2max was significantly increased the maximal speed of running by 15 (2.5)%; (p < 0.01).[b]Conclusions.[/b] According to above presented data we may conclude that exercise with total energy content of 6270 kJ/week is enough for significant improvement of AF and motor performance by maximal exercise in non-trained subjects.The study was supported by grant of Czech Ministry of Education MSM 0021620864.
Authors and Affiliations
Václav Bunc, Marie Skalská
Keywords
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