JaLCDOI 10.18926/AMO/31088
FullText URL fulltext.pdf
Author Uchida, Hayato| Mino, Yoshio| Babazono, Akira| Ogawa, Takanori| Aoyama, Hideyasu|
Abstract <p>To clarify the influence of the introduction of metal bats on the physique and batting records of the players in the National Summer High School Baseball Tournaments, a comparative analysis was conducted between height, body weight, body-weight ratio (body weight/height), batting average and home run average of the best four teams' players (n = 493) and those of the other teams' players (n = 4,590) in three periods: the period of the use of wooden bats, that of the use of both wooden and metal bats and that of the use of metal bats. In the period of metal bat use, the mean values of physique of the best four teams' players were significantly larger (P &#60; 0.05) and their average number of home runs was significantly higher than those of the other teams' players (P &#60; 0.01). The only significant differences between the two groups in those indices for each time period were for height in the wood and metal/wood periods. This study demonstrated that the differences between the home run average and physique, including height, body weight and body-weight ratio of the best four teams and the rest of the teams were the greatest after the use of metal bats. These findings suggest that the importance of the home run average increased and was associated with large-size of physique after the use of metal bats in the National Summer High School Baseball Tournaments.</p>
Keywords male high school students baseball players height body weight body-weight ratio batting records
Amo Type Article
Published Date 1994-08
Publication Title Acta Medica Okayama
Volume volume48
Issue issue4
Publisher Okayama University Medical School
Start Page 217
End Page 223
ISSN 0386-300X
NCID AA00508441
Content Type Journal Article
language 英語
File Version publisher
Refereed True
PubMed ID 7817777
Web of Sience KeyUT A1994PE51400007
JaLCDOI 10.18926/AMO/30478
FullText URL fulltext.pdf
Author Uchida, Hayato| Mino, Yoshio| Tsuda, Toshihide| Babazono, Akira| Kawada, Yuichi| Araki, Hidetoshi| Ogawa, Takanori| Aoyama, Hideyasu|
Abstract <p>A cross-sectional study was conducted to quantitatively evaluate the relationship between the instrumental activities of daily living (IADL) and various physical fitness tests in elderly women living at home. The study focused on the total population of those women aged 65 years and over living in Y Town, Hyogo Prefecture, Japan, who visited a nursing home for day services. A total of 128 subjects were divided into two groups: dependent in IADL group (n = 49) and independent in IADL group (n = 79). The magnitude of the relation was evaluated by the odds ratio (OR). The following tests showed a significant decrease in IADL: knee-raising test [age-adjusted OR = 4.23, 95% confidence interval (CI) 1.81-9.87], height (age-adjusted OR = 4.09, 95% CI 1.75-9.56), grip strength (age-adjusted OR = 3.68, 95% CI 1.57-8.60), sit-and-reach test (age-adjusted OR = 2.76, 95% CI 1.20-6.34), and standing on one leg with closed eyes (age-adjusted OR = 2.56, 95% CI 1.09-5.97). Multivariate analysis using Hayashi's quantification method I indicated that knee-raising was the test most highly correlated with decreased IADL. These results suggest that measurement of knee-raising ability, muscle strength of the lower extremities and flexibility of hip joint could be the most useful factors to assess the level of instrumental self-support ability.</p>
Keywords elderly women living at home instrumental activities of daily living physical fitness test kneeraising ability
Amo Type Article
Published Date 1996-12
Publication Title Acta Medica Okayama
Volume volume50
Issue issue6
Publisher Okayama University Medical School
Start Page 325
End Page 333
ISSN 0386-300X
NCID AA00508441
Content Type Journal Article
language 英語
File Version publisher
Refereed True
PubMed ID 8985470
Web of Sience KeyUT A1996WA04500007