Efeitos de seis semanas de step-training em parâmetros da força muscular de membros inferiores em mulheres idosas

• Ano de defesa: 2003
• Autor(a) principal: Daniela Coelho Zaza
• Tipo de documento: Dissertação
• Tipo de acesso: Acesso aberto
• Idioma: por
• Instituição de defesa: Universidade Federal de Minas Gerais; UFMG
• Palavras-chave em Português: Ciências do Esporte; Ginastica para mulheres Aspectos fisiologicos; Aptidão fisica em idosos; Exercícios físicos Aspectos fisiológicos; Membros inferiores
• Link de acesso: http://hdl.handle.net/1843/BUBD-9BPGU3

The purpose of the present study was to determine whether increase in quadriceps (Q) and hamstrings (H) strength could be attained from step-training. Twenty-four healthy women ranging from 61 to 75 yrs of age gave informed consent and volunteered to participate in the control or the exercise group for the study. All subjects already frequented a regular program of workout three times a week for 60 min. The exercise group (n = 13) replaced their usual physical activity schedule with a 6-week step-training program, which met three times a week for 60 min. Thecontrol group (n = 11) maintained their usual physical activity schedule throughout the 6-week period. Peak Torque body weight ratios (T/BW), work (W) and muscle power (P) were determined on quadriceps and hamstrings using a Biodex System 3 Pro isokinetic dynamometer. There was significant difference in hamstrings-T/BW for the exercise group in pre- to posttest at 6Oº/sec. The control group showed a significant decrease from pre- to posttest in quadriceps- T/BW at 180°/sec (p<0,05)and a significant difference (p<0,05) in hamstrings-T/BW in pre- to posttest at 60°/sec. There was a significant difference in quadriceps-W for the exercise group in pre- to posttest at 60°/sec and in hamstrings-W in either test speed (60° e 180°/sec) (p< 0,05). The control group showed a significant decrease from pre- to posttest in quadriceps-W at 1807sec (p<0,05) and a significant difference in hamstrings-W in either test speed (60° e 1807sec) (p< 0,05). Significant differences were observed inquadriceps-P in either test speed (60° e 180°/sec) for the exercise group in pre- to posttest and in hamstrings-P at 60°/sec (p< 0,05). The control group showed a significant decrease from pre- to posttest in quadriceps-P at 180°/sec (p<0,05) and in hamstrings-P at 60°/sec (p< 0,05). The step-training appears to provide the necessary stimulus for improvements in muscle strength, work and power as measured by computerized isokinetic dynamometry.