The Effects of Sports Participation in Strength Parameters in Primary School Students

摘要

Physical inactivity is a major risk factor for many diseases such as obesity, cardiovascular diseases, diabetics etc. and a major public health concern for children and adults who are physically inactive. It has been reported that increased muscle mass and strength usually improves health-related quality of life. The aim of this study was to investigate the effects of sports participation in strength parameters in primary school students in 7th and 8th grade. Data were collected from 56 adolescent aged 13- to 14–yr-old. Students participated physical activities only during physical education classes (NSP) (n=28, age 13,42±0,50 yr, body mass 50,40±9,19kg, height 158,57±6,82cm, body fat percentage 15,00±9,41%) compared with those who also participated physical activities (SP) such as swimming, football, handball, athletics trainings (n=28, age 13,64±0,48 yr, body mass 53,76±7,60kg, height 162,03±7,42cm, body fat percentage 15,99±8,28%) outside of school. The average training years of SP were 5,18±0,39 years. Back strength (BS), leg strength (LS), left (LH) and right (RH) handgrip strengths were measured as strength variables. And also vertical jump power (VP) was calculated from Lewis formula. The BS values were 88,36±34,75kg and 62,46±19,92kg, LS values were 95,43±39,26kg and 72,46±25,05kg, LH values were 27,99±6,82kg and 24,85±5,57kg, RH values were 30,06±7,56kg and 24,74±7,19kg, VP values were 68,37±11,82kg.m/sec and 58,16±11,65kg.m/sec for SP and NSP, respectively. When comparing to the NSP, SP had higher strength and jump power values (p<0,01). In conclusion, we found that increased levels of sports participation had positive effects on strength parameters in primary school students in 7th and 8th grade.