Influence of breathing technique on the center of mass and center of buoyancy: Its implications for horizontal alignment during swimming

• Maruyama Yusuke

  Graduate School of Sport Sciences, Waseda University

• Konda Shoji

  Faculty of Sport Sciences, Waseda University

• Yanai Toshimasa

  Faculty of Sport Sciences, Waseda University

Bibliographic Information

Other Title

• 呼吸様式が重心位置と浮心位置に与える影響：水泳における水平姿勢維持への示唆

Abstract

The purpose of this study was to test the hypothesis that the position of the center of buoyancy (CB) relative to the center of mass (CM) lay more caudally when the abdominal breathing technique is used, as compared with the chest breathing technique. Ten healthy men who practiced the abdominal and chest breathing techniques participated. The position of the CB, CM, and the distance between them (CB-CM distance) were determined as time-series data during inhalation with each breathing technique, and the changes in the positions and distance due to inhalation were compared between the two techniques. The results showed that both the CB and CM translated due to the inhalation and that the amount and direction of the translations differed between the two techniques (p<0.01). The increase in the CB-CM distance was significantly smaller (p<0.01) with abdominal breathing (1.11 cm) than with chest breathing (1.21 cm). For both breathing techniques, the CB was located more cranially to the CM, regardless of the amount of inhalation. These data demonstrate clearly that the position of the CB relative to the CM lies more caudally with the abdominal breathing technique than with chest breathing, thus supporting our hypothesis. These results indicate that breathing technique influences the magnitude of the moment of buoyant force around the CM and the swimmer's ability to float horizontally on the water surface.<br>

Journal

• Taiikugaku kenkyu (Japan Journal of Physical Education, Health and Sport Sciences)

  Taiikugaku kenkyu (Japan Journal of Physical Education, Health and Sport Sciences) 57 (2), 641-651, 2012

  Japan Society of Physical Education, Health and Sport Sciences

Keywords

• front crawl
• abdominal breathing
• moment

Details

• CRID: 1390282679077513344
• NII Article ID: 130004489670
• DOI: 10.5432/jjpehss.12038
• ISSN: 18817718
• ISSN: 04846710
• Text Lang: ja
• Data Source:
  • JaLC
  • Crossref
  • CiNii Articles
• Abstract License Flag: Disallowed