skip to main content
Ngôn ngữ:
Giới hạn tìm kiếm: Giới hạn tìm kiếm: Dạng tài nguyên Hiển thị kết quả với: Hiển thị kết quả với: Chỉ mục

Four weeks of training in a sledge jump system improved the jump pattern to almost natural reactive jumps

Kramer, Andreas ; Ritzmann, Ramona ; Gruber, Markus ; Gollhofer, Albert

European journal of applied physiology, January 2012, Vol.112(1), pp.285-93 [Tạp chí có phản biện]

E-ISSN: 1439-6327 ; PMID: 21544569 Version:1 ; DOI: 10.1007/s00421-011-1981-5

Toàn văn sẵn có

Trích dẫn Trích dẫn bởi
  • Nhan đề:
    Four weeks of training in a sledge jump system improved the jump pattern to almost natural reactive jumps
  • Tác giả: Kramer, Andreas ; Ritzmann, Ramona ; Gruber, Markus ; Gollhofer, Albert
  • Chủ đề: Exercise -- Physiology ; Leg -- Physiology ; Muscle Contraction -- Physiology ; Muscle, Skeletal -- Physiology ; Physical Fitness -- Physiology ; Psychomotor Performance -- Physiology
  • Là 1 phần của: European journal of applied physiology, January 2012, Vol.112(1), pp.285-93
  • Mô tả: In spite of extensive training regimens during long-term space missions with existing training devices, astronauts suffer from muscle and bone loss. It has been suggested that reactive jumps inducing high forces in the muscles-consequently exposing the bones to high strains-help to counteract these degradations. In a previous study, a new sledge jump system (SJS) was found to allow fairly natural reactive jumps. The aim of the present study was to evaluate if training in the SJS would further reduce the differences between jumps in the SJS and normal jumps, particularly with respect to ground reaction forces (GRF) and rate of force development (RFD). Sixteen participants in a training group (TG) and 16 in a control group (CON) were tested before and after the TGs four-week hopping training in the SJS. During the tests, kinetic, kinematic and electromyographic data were compared between hops on the ground and in the SJS. After the training period, the GRF, the RFD and the leg stiffness in the SJS significantly increased for the TG (but not for CON) by 10, 35 and 38%, respectively. The kinematic and electromyographic data showed no significant changes. A short training regimen in the SJS reduced the differences between jumps in the SJS and normal jumps. Considering that a natural movement that exposes the muscles and thus also the bones to high loads is regarded as important for the preservation of muscle and bone, the SJS seems to be a promising countermeasure.
  • Ngôn ngữ: English
  • Số nhận dạng: E-ISSN: 1439-6327 ; PMID: 21544569 Version:1 ; DOI: 10.1007/s00421-011-1981-5

Đang tìm Cơ sở dữ liệu bên ngoài...