Page 417 - Jurnal Penelitian MTsN 6 Jakarta

ABSTRACT

Caloric requirements play a vital role in supporting athletic performance,
particularly among adolescents who are in a critical phase of growth and
development. Adolescent futsal athletes must maintain a balance between Basal
Metabolic Rate (BMR), Thermic Effect of Food (TEF), and Energy Expenditure of
Physical Activity (EEPA) to sustain both training and competition. An imbalance
between intake and expenditure may lead to fatigue, decreased performance, higher
injury risk, and potential growth disturbances. This study aims to analyze the energy
needs of adolescent futsal players using the Metabolic Equivalent of Task (METs)
method integrated with smartwatch technology, enabling practical and real-time
estimation of energy expenditure.
This research applied a quantitative-applied approach with a longitudinal design.
The subjects were 14 adolescent futsal athletes from MTsN 6 Jakarta, aged 14–15
years, actively engaged in regular training sessions. Data were collected through
anthropometric measurements, observation of training segments (warm-up, drill,
small-sided game, scrimmage), and energy expenditure records using two
approaches: manual MET calculations and smartwatch-based estimations. Data
analysis included descriptive statistics, comparative tests (paired sample t-test or
Wilcoxon signed-rank test), and Bland-Altman plots to evaluate the agreement
between methods.
The findings revealed that athletes’ BMR ranged from 1,405 to 1,668 kcal/day
(average 1,521 kcal), while TEF contributed 244–293 kcal/day (≈10% of daily
energy needs). EEPA increased with activity intensity, with scrimmage showing the
highest expenditure (~500 kcal) and warm-up the lowest (~280 kcal). Energy
distribution showed scrimmage accounted for 31% of total expenditure, followed
by small-sided games (28%), drills (24%), and warm-ups (17%). Total Energy
Expenditure (TEE) averaged 2,413 kcal/day, ranging between 2,181 and 2,720
kcal/day. Comparisons indicated that smartwatch-based estimations were slightly
lower than manual METs calculations, yet differences remained within acceptable
limits (<15%).
In conclusion, adolescent futsal players have relatively high and varied energy
demands depending on activity type and individual characteristics. The integration
of METs with smartwatch technology proved effective as a practical monitoring
method, providing a valuable basis for nutritional planning and training programs.

Keywords: caloric needs, futsal, METs, smartwatch

viii