A 47-Year Comparison of Lower Body Muscular Power in Spanish Boys: A Short Report
Much of the evidence examining temporal trends in fitness among youth has found a decrease in measures of muscular strength and muscular power over recent decades. The aim of this study was to examine trends in lower body muscular power in Spanish boys over 47 years. In 1969 140 boys (10–11 years; b...
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doaj-6348a21a98264ff4a313f81dbcaadf2b2020-11-25T03:56:23ZengMDPI AGJournal of Functional Morphology and Kinesiology2411-51422020-08-0156464010.3390/jfmk5030064A 47-Year Comparison of Lower Body Muscular Power in Spanish Boys: A Short ReportIván Chulvi-Medrano0Manuel Pombo1Miguel Ángel Saavedra-García2Tamara Rial Rebullido3Avery D Faigenbaum4Sport Performance and Physical Fitness Research Group (UIRFIDE), Department of Physical and Sports Education, Faculty of Physical Activity and Sport Sciences, University of Valencia, 46010 Valencia, SpainDepartment of Physical Education and Sport, University of Coruña, 15179 A Coruña, SpainGroup of Research in Sport Science (INCIDE), Department of Physical Education and Sport, University of Coruña, 15179 A Coruña, SpainExercise & Women’s Health, Newtown, CT 18940, USADepartment of Health and Exercise Science, The College of New Jersey, Ewing, NJ 08628, USAMuch of the evidence examining temporal trends in fitness among youth has found a decrease in measures of muscular strength and muscular power over recent decades. The aim of this study was to examine trends in lower body muscular power in Spanish boys over 47 years. In 1969 140 boys (10–11 years; body mass index = 19.24, SD = 2.91 kg/m<sup>2</sup>) and in 2016, 113 boys (10–11 years; body mass index = 19.20, SD = 3.15 kg/m<sup>2</sup>) were recruited. Lower body power was assessed using the vertical jump (VJ) and standing long jump (SLJ) tests. Significant differences and a large effect size were shown between groups in the SLJ (<i>p</i> = 0.001; d = 0.94) and the VJ (<i>p</i> = 0.001; d = 0.66). SLJ data in 1969 were higher (1.52 m, SD = 0.19) when compared to the 2016 data (1.34 m, SD = 0.18). The VJ performance of the 1969 sample was also higher (25.95 cm; SD = 6.58) than the 2016 sample (21.56 cm; SD = 4.72). SLJ and VJ performance of the 2016 group decreased 11.8% and 16.9%, respectively. There were no significant differences between groups in body mass index. The results indicate a secular decline in lower body muscular power in 10–11-year-old Spanish boys with no significant changes in body mass index over the 47-year study period.https://www.mdpi.com/2411-5142/5/3/64pediatric dynapeniachildrenresistance training |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Iván Chulvi-Medrano Manuel Pombo Miguel Ángel Saavedra-García Tamara Rial Rebullido Avery D Faigenbaum |
spellingShingle |
Iván Chulvi-Medrano Manuel Pombo Miguel Ángel Saavedra-García Tamara Rial Rebullido Avery D Faigenbaum A 47-Year Comparison of Lower Body Muscular Power in Spanish Boys: A Short Report Journal of Functional Morphology and Kinesiology pediatric dynapenia children resistance training |
author_facet |
Iván Chulvi-Medrano Manuel Pombo Miguel Ángel Saavedra-García Tamara Rial Rebullido Avery D Faigenbaum |
author_sort |
Iván Chulvi-Medrano |
title |
A 47-Year Comparison of Lower Body Muscular Power in Spanish Boys: A Short Report |
title_short |
A 47-Year Comparison of Lower Body Muscular Power in Spanish Boys: A Short Report |
title_full |
A 47-Year Comparison of Lower Body Muscular Power in Spanish Boys: A Short Report |
title_fullStr |
A 47-Year Comparison of Lower Body Muscular Power in Spanish Boys: A Short Report |
title_full_unstemmed |
A 47-Year Comparison of Lower Body Muscular Power in Spanish Boys: A Short Report |
title_sort |
47-year comparison of lower body muscular power in spanish boys: a short report |
publisher |
MDPI AG |
series |
Journal of Functional Morphology and Kinesiology |
issn |
2411-5142 |
publishDate |
2020-08-01 |
description |
Much of the evidence examining temporal trends in fitness among youth has found a decrease in measures of muscular strength and muscular power over recent decades. The aim of this study was to examine trends in lower body muscular power in Spanish boys over 47 years. In 1969 140 boys (10–11 years; body mass index = 19.24, SD = 2.91 kg/m<sup>2</sup>) and in 2016, 113 boys (10–11 years; body mass index = 19.20, SD = 3.15 kg/m<sup>2</sup>) were recruited. Lower body power was assessed using the vertical jump (VJ) and standing long jump (SLJ) tests. Significant differences and a large effect size were shown between groups in the SLJ (<i>p</i> = 0.001; d = 0.94) and the VJ (<i>p</i> = 0.001; d = 0.66). SLJ data in 1969 were higher (1.52 m, SD = 0.19) when compared to the 2016 data (1.34 m, SD = 0.18). The VJ performance of the 1969 sample was also higher (25.95 cm; SD = 6.58) than the 2016 sample (21.56 cm; SD = 4.72). SLJ and VJ performance of the 2016 group decreased 11.8% and 16.9%, respectively. There were no significant differences between groups in body mass index. The results indicate a secular decline in lower body muscular power in 10–11-year-old Spanish boys with no significant changes in body mass index over the 47-year study period. |
topic |
pediatric dynapenia children resistance training |
url |
https://www.mdpi.com/2411-5142/5/3/64 |
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