The purpose of this study is to examine the movement characteristics of the upper limb supported floor scooting movement in bilateral lower extremity amputees. The subject was one adult male who had amputee bilateral lower extremity. The measurements were examined using 3D motion analysis and ground reaction force and electromyography. The following results were obtained. The proportion of flexion phase was significantly higher in spine flexion posture than in spine extension posture （p<0.05）. The maximum value of shoulder joint motion on the sagittal plane during the extension phase was significantly greater in the spinal extension posture than in the spinal flexion posture （p<0.05）. From floor reaction force data, the spinal flexion posture was the trend to push the upper extremities more strongly during movement than the spinal extension posture in the flexion phase, the rectus abdominis muscle activity was intentionally greater, and the biceps brachii muscle activity was intentionally lower in the spine extension posture than in the spine flexion posture （p<0.05）. Similar to previous studies, it was suggested that the spine extension posture is an efficient movement posture, and the spine flexion posture is a movement posture that loads the muscles of the upper limb girdle. However, since the weight of the lower limbs and the contact area with the floor were small due to the amputation of both lower legs, the spinal flexion posture was a posture that promoted speed and distance in one movement compared to the spinal extension posture.

  This study evaluated the displacement of the body’s center of gravity during running jumps by categorizing it into elements,namely: “hinge moment” and “telescoping of the lower limbs” using a polar coordinate system. We examined whether hinge moment and telescoping of the lower limbs contribute to the jump height in the running jump of basketball players and whether the jump motions are related to these elements. A total of 21 college basketball players were recruited. Running jumps were measured using a high-speed camera. The three-dimensional coordinates of the body’s center of gravity were obtained, and its upward displacement due to the hinge moment and the telescoping of the lower limbs was determined. The results revealed the following:

（１） The factors contributing to the jumping height during the running jump were the maximum upward acceleration, owing to the hinge moment immediately after ground contact, and the maximum upward velocity, because of the telescoping of the lower limbs in the second half of the take-off.

（２） Jumping motions related to hinge moment included more plantar flexion of the ankle joint at heel contact and quicker plantar flexion after heel contact. Moreover，there should be no sudden extension of the hip joint immediately after heel contact. The body tilt at heel contact should be approximately 45 degrees.

（３） Jumping motions associated with telescoping of the lower limbs comprised the horizontal velocity of the body’s center of gravity at heel contact and the maximum dorsiflexion angle of the ankle joint during the latter half of the take-off.

　食物アレルギーの有病率は年々増加しており，現代の日本で生活する我々にとって身近な疾患の一つになっている．食物アレルギー疾患予防については，妊娠期から一部の食品の制限や離乳食開始を遅らせるなどの指導がなされていた．しかし現在の主流な考え方として，出生後早期からアレルゲンとなり得る食物の早期経口摂取開始が重要になっており，食物アレルギー予防に関して対応は大きく変化している．そのような中，2019年に乳幼児健診において指標となる「授乳・離乳の支援ガイド」が改定され，2019年前後に生まれた子どもの両親について食物アレルギーに対する認識と行動を調査するため今回の研究テーマを設定した．

　岡山県にある保育園において実施したアンケート調査447名の内，返信のあった181名を対象とした．本研究の結果から，乳幼児の保護者に「授乳・離乳の支援ガイド」の正しい知識は伝わっておらず，実際の行動も変容していないことが明らかとなった．一方，乳幼児の保護者はSNS・ネットから情報収集している割合が高いことも明らかとなった．これらのことから，子どもたちの健やかな成長のために，行政・医療機関・民間が連携して「授乳・離乳の支援ガイド」の正しい情報を妊娠中の食事指導や乳児検診で伝えるとともに，SNS・ネットを活用し拡散することも検討する必要がある.