Establishing Normative Reference Values for the Utah Seated Medicine Ball Throw Protocol in Adolescents
Authors: Cory Biggar, Abigail Larson, and Mark DeBeliso
Corresponding Author:
Cory Biggar
164 East 2300 North, Apt. 5
North Ogden, UT 84414
Email: corybiggar@gmail.com
801-831-1342
Cory Biggar is a student at Southern Utah University. Upon the completion of this project, he will earn an MS in Sports Conditioning and Performance.
Establishing Normative Reference Values for the Utah Seated Medicine Ball Throw Protocol in Adolescents
Abstract:
The seated medicine ball throw (SMBT) is a field test intended to assess upper-body muscular power by measuring the maximal distance an individual can throw a medicine ball from an isolated, seated position (25). The SMBT has been used to assess upper-body power in various populations and to establish concurrent validity for other measures of upper-body power such as the bench press power test and the plyometric push-up. The SMBT is less costly and simpler to incorporate into a field test battery than other upper body power assessments. While the SMBT is a valid, reliable field test for upper-body power, normative reference standards for most populations, including adolescent (12-15 years old) physical education students, do not exist. Purpose: This study reports distances thrown in the SMBT to establish normative reference values in male and female physical education students, ages 12-15 years old. Methods: One hundred thirteen untrained male and female physical education students aged 12-15 years performed the SMBT field test three times on a single testing day. Participants threw a 2 kg medicine ball with a 19.5 cm diameter while seated on the floor with the upper torso against the wall (legs extended, trunk angle 90°). Likewise, age, height, and body mass were assessed. Results: Participant data was separated by age gender for analysis. Mean and standard deviation for the SMBT for males was 4.3 ± 0.7 m and 5.2 ± 0.8 m for ages 12-13 and 14-15, respectively, and for females was 3.4 ± 0.5 m and 3.7 ± 0.5 m for ages 12-13 and 14-15, respectively. Pearson correlation coefficients (i.e. PCCS or r) were calculated for trial pairs (i.e. T1 vs T2, T2 vs T3, T3 vs T1) for both female and males at age groupings of 12-13 and 14-15. The aforementioned PCCs ranged from r = 0.85-0.97. Normative reference values as percentile ranks for the SMBT scores for age groups 12-13 and 14-15 among males and females, respectively, were also established. Conclusion: The data presented provides an initial set of normative reference standards for coaches and students to determine upper-body muscular power using the SMBT.
(more…)