DISCUSSION

1. Relationship suitability energy intake on nutritional status

In the results showed that there is a significant correlation between energy intake suitability against malnutrition status (p = 0.000 and 95% CI: 3.940 to 13.716 (7.351)), this means that the students who have the appropriate number of calories likely to have a normal nutritional status, that is equal to 7.351 times the odds compared to students who have the amount of energy intake that does not fit. This is consistent with previous studies conducted Restiani in SMP Muhammadiyah Jakarta 31 which states that the existence of a significant relationship between energy intake and nutritional status (Restiani N, 2012). The imbalance between energy intake with nutritional requirements affecting the nutritional status of a person. Physical activity and exercise, which is not balanced with energy consumption, can lead to weight loss is not normal (MOH, 2005). Energy shortages will cause the body to experience a negative balance, resulting in less weight than it should be (ideal) (Almatsier, 2005) This is in contrast with a previous study conducted by Klau in SMP Negeri 1 Kokap Kulon Progo Yogyakarta which states that there is no relationship with the energy intake nutritional status (Klau YB, et al, 2012). This is because at the time of the interview the 24-hour food recall students forget what has been consumed, so the amount of intake calculation results do not show compliance with the nutritional status of students. It also indicates that respondents who are in the normal nutritional state currently has a decreased risk for malnutrition status and worse if not addressed their food consumption.

2. The relationship of physical activity on nutritional status

The results showed that there was no significant relationship between activity with less nutritional status (p = 0.267). Where opportunities are students who have moderate activity has a normal nutritional status of 1,362 times that of the respondents who have a chance of light activity (95% CI: 0.789 to 2.350 (1.362)). This is consistent with previous studies conducted Restiani in SMP Muhammadiyah Jakarta 31 stating that there were no significant relationship between physical activity and nutritional status. In the research Restiani split 3 types of activity, namely sleep, watch television and sports, where students who often watch television often have a tendency to exercise, causing no significant relationship between the duration of watching television with more nutrition. But this is different from previous studies conducted shove in SMP Frater Don Bosco Manado which states that there is a significant correlation between the intensity of physical activity and nutritional status (CI shove, 2012). Various means and adequate facilities cause motion and activity is limited (Hudha, 2006), resulting in an unbalanced energy expenditure (by lack of physical activity) that can lead to weight gain or nutritional more and applies also to the contrary (Hidayati et al, 2010).

3. Relationship suitability of energy intake and physical activity on nutritional status

Based on the results of the analysis indicate that the suitability of the energy intake affects the status of malnutrition, while physical activity did not affect the nutritional status. This means that if the amount of energy intake that enter the body does not correspond to the amount of energy required intake of the nutritional status is likely to be less.

Excessive energy intake and energy expenditure is not matched by a balanced (with less physical activity) will lead to weight gain and applies also to the contrary, if the physical activity is more balanced intake and not enough energy, it can lead to weight loss (Hidayati et al, 2010).

Light physical activity is done with intensity below 150 minutes per week, while physical activity is being carried out with the intensity of 150-300 minutes per week.

The weakness of this study, among others, data collection with questionnaires and interviews are subjective so that the correctness of the data relied heavily on the honesty and the ability to remember each respondent, in addition to the 88 respondents said there were given an allowance of just enough to transport to commute to school, 40 respondents on a diet to slim, 49 respondents were not happy with the food served d houses and 33 people say because of economic factors. Limitations of time collecting data from all respondents thus affecting the accuracy of the data collected. Further research is needed on the factors that influence the incidence of malnutrition among school children eg stress factors, the factors underlying disease, and others.

CONCLUSION

From the results and discussion that has been described can be deduced as follows:

a. There is a relationship between lack of energy intake on the incidence of malnutrition among seventh grade students in Junior High School 7 Kediri and MTs 2 Kediri with a value of p = 0.000.

b. There was no relationship between physical activity on the incidence of malnutrition in the seventh grade students of SMP Negeri 7 Kediri and MTs 2 Kediri with a value of p = 0.267.

ADVICE

a. Reactivate monitoring the nutritional status of school children to monitor the growth and development of nutritional status. This can be done through the Program School Health Unit (UKS) that already exist.

b. Hold regular counseling about nutrition and health of school students, and parents.

c. Needs to be done further research on other factors affecting the nutritional status of school children.