Chalach Piromya, Pavin  Podjanuaree, Ekachai Tanademkao, Teerapol Poblarp, Siriporn  Roongruang, Naritt  Jaitabb, Chayakorn  Pavontaweesuk, and Nopporn  Pechpul. (2017). The Result of Sports and Recreation Activities After  School on The Physical Fitness of the kindergarten and  Elementary Student in Samutsakhon. Proceedings. 7th Institute of Physical Education International Conference 2017 28-30 June 2017 at Town in Town Hotel Bangkok Thailand, p.251.

The objective of this research was to compare the physical fitness of the students before and after training by using the Sports and recreation activities after school in the kindergarten and the elementary students. One Group pretest-posttest design was used in this research. The target groups consisted of 200 students in Academic year 2015 of Watdonkaidee Municipal School studying at level 3 kindergarten, grade 1, grade 2 and grade 3 of the elementary students. Fifty students were purposively sampled form each level. Data collecting by pre-test/ post-test the physical fitness test for kindergarten and elementary students. Data analyzed by using arithmetic mean, standard deviation and dependent t-test.
The results of the study were revealed as following:
After being trained with the sports and recreation activities after school
1. The level 3 kindergarten had significantly better physical fitness at the revel of 0.05 in items of sit and reach, standing broad jump, sit-ups 30 seconds, Shuttle and zig zag run and body mass index, accept the bicep curl 30 seconds and 20 meter dash which didn’t improve significantly.
2. The elementary students, grade 1, grade 2 and grade 3 had signicantly better physical fitness at the revel of 0.05 in the items of push-up 30 seconds, standing broad jump, sit and reach, zig-zag run and skinfold thickness acept the sit-ups 60 seconds and distance run which didn’t improve significantly.