DIFFERENCES IN LOWER LEG KINETIC OF SOCCER INSTEP KICKING BETWEEN FEMALE AND MALE PLAYERS

We aimed to clarify the difference in lower leg segment kinetics of soccer instep kicking between female and male players. Instep kicking of seven female and seven male university soccer players were captured at 500Hz. There was no significant difference between female and male groups for peak forward lower leg angular velocity while female players exhibited significantly smaller angular impulse due to knee joint moment than that of male players. On the other hand, female players showed comparable angular impulse due to the interaction moment acting on the lower leg to that of male players. It can be considered that the interaction moment acting on the lower leg of female players may compensate their reduced exertion of knee joint moment during kicking, thereby achieving comparable lower leg angular velocity to that of male players

高齢者を対象とした自宅での短期間レジスタンストレーニングが筋機能・形態に及ぼす影響

The purpose of this study was to investigate the effect of resistive training on strength and morphology, and functional capacity of elderly men and women. Seven elderly volunteers (four men and three women, mean age: 70.5 ± 1.4 years) participated in this study. The subjects were requested to perform the resistive training three times a week for a month, which consists of five resistive exercises, i.e. rising from the chair, hip flexion, calf raising, abduction of the lower limbs and sit up. Five functional and morphological tests were performed before and after the training, i.e. maximal voluntary contraction of isometric knee extension, the time to walk 5 m, the time to rise from the floor, repetitions to sit up for 20 sec and the time for 10 repetitions to rise from chair, the thickness of muscle and subcutaneous fat in the thigh and abdomen by ultrasonography. After the training, the time to walk 5 m, repetitions to sit up for 20 sec and the thickness of subcutaneous fat at the abdomen significantly improved. These results suggest that improvement of functional capacity and morphological adaptation took place in the elderly men and women as a result of short-term resistive training

在宅での短期間レジスタンストレーニングが高齢者の身体機能と形態に及ぼす影響

The purpose of this study was to investigate the effect of a short-term resistive training on functional capacity and morphology for the elderly men and women. Twenty-three elderly volunteers (11 men and 12 women, mean age: 72.4 ± 5.1 years) participated in this study. The subjects were requested to perform resistive training at least three times a week for 6 weeks at their own home. The training program consists of five different types of resistive exercises, i.e. rising from the chair, hip flexion, calf raise, hip abduction, and sit up. Four functional capacity tests, i.e. rise from a chair ten reps (Chair Up), the time to walk 5 m (5 m Walk), the time to rise from the floor (Supine Up), and the number of reps to sit up for 30-sec (Sit-Up) and a morphological test, i.e. thickness of muscle and subcutaneous fat at the anterior mid-thigh using ultrasonography were measured before and after the training. All four functional tests were significantly improved after the training (8.8% to 59.6%). However, thickness of muscle and subcutaneous fat in the thigh was unchanged. These results suggest that a short-term resistive training does not seem to induce morphological change, but it may improve physical capacity of daily life activities for elderly individuals