Interval Running Exercise Reduces Running TIME of 800 Meters Dash Without Causing Increased Level of Sgot – Sgpt in Male Students of the Faculty of Sports Sciences, Manado State University

The effort to gain best achievement in sports by means of exercise has twodilemmatic sides, both for the coaches and sport promoters. On one side, exercise shouldbe done intensely and maximally, but on the other side, it is a known fact that excessiveand maximal exercises can damage the body organs. The purposes of this study were toobserve the side effects of interval running exercise of 800 meters, to find out level offatigue by examining lactate acid produced by each model, and to assess the negativeeffects on organs as indicated by the level of SGOT-SGPT. The exercise model appliedin the study comprised interval running of 2 x 800 meters, 4 x 400 meters, 8 x 200meters, 16 x 100 meters and one standard of comparison exercise, which was runningexercise of 2 x 800 meters with passive rest. This study was true experimental usingrandomized pre-test-post-test control group design. Samples of this study were 27 malestudents of the Faculty of Sports Sciences, Manado State University, who were dividedinto five groups. Group 1 was with interval running exercise of 2 x 800 meters. Group 2was assigned to interval running exercise of 4 x 400 meters. Group 3 was with intervalrunning exercise of 8 x 200 meters. Group 4 was with interval running exercise of 16 x100 meters. Group 5 as comparison standard was with running exercise of 2 x 800 meterspassive rest. All the exercise models were carried out for six weeks, each with afrequency of three times a week. Results of the study showed that the five groupsdemonstrated reduction of running time of 800 meters dash (p<0.05), lactate acidproduction differed in some of the groups (p>0.05), levels of SGOT and SGPT of allgroups did not show significant increase (p>0.05). From the above findings, it can beconcluded that all exercise models of interval running 2 x 800 meters, 4 x 400 meters, 8 x200 meters, 16 x 100 meters and 2 x 800 meters with passive rest lowered the runningtime of 800 meters dash and did not increase level of SGOT-SGPT

PEMBELAJARAN SAINS MELALUI PENDEKATAN ERGONOMI MENGURANGI KELUHAN MUSKULOSKELETAL, KEBOSANAN DAN KELELAHAN SERTA MENINGKATKAN MOTIVASI DAN PRESTASI BELAJAR SISWA SD 1 SANGSIT KECAMATAN SAWAN KABUPATEN BULELENG

Tujuan penelitian ini adalah untuk mengetahui peranan pendekatan ergonomidalam pembelajaran sains antara kelompok kontrol dengan kelompok eksperimenPeranan tersebut dalam hal (1) penurunan keluhan muskuloskeletal siswa SD; (2)penurunan kebosanan; (3) penurunan kelelahan siswa SD; (4) peningkatan motivasibelajar sains; dan (5) peningkatan prestasi belajar sains. Jenis penelitian ini termasukjenis penelitian quasi eksperimental dengan rancangan randomized pre-test and posttestcontrol group design. Pada kelompok kontrol pembelajarannya dengan carakonvensional (tanpa PE) dan kelompok eksperimen dengan PE. Pengambilan sampeldilakukan secara random. Analisis data dilakukan dengan menggunakan uji Mann-Whitney dan uji t Group dengan taraf signifikansi 5 %. Simpulan dari penelitian iniadalah (1) pendekatan ergonomi dapat menurunkan keluhan muskuloskeletal siswa SD,baik akibat penggunaan meja belajar dan tempat duduk siswa serta akibat penggunaantas punggung, antara kelompok kontrol yang dalam pembelajarannya tanpamenggunakan pendekatan ergonomi (PE) dengan kelompok eksperimen yang dalampembelajarannya dengan menggunakan PE (p < 0,05). Penurunan keluhanmuskuloskeletal akibat penggunaan meja dan tempat duduk siswa sebesar 42,54(99,88%) dan penurunan keluhan muskuloskeletal akibat penggunaan tas punggungsebesar 47,97 (99,83%); (2) pendekatan ergonomi dapat menurunkan kebosanan siswaSD, antara kelompok kontrol yang dalam pembelajarannya tanpa menggunakanpendekatan ergonomi (PE) dengan kelompok eksperimen yang dalam pembelajarannyadengan menggunakan PE (p < 0,05). Penurunan kebosanannya adalah sebesar 18,73(26,40%); (3) pendekatan ergonomi dapat menurunkan kelelahan siswa SD, antarakelompok kontrol yang dalam pembelajarannya tanpa menggunakan pendekatanergonomi (PE) dengan kelompok eksperimen yang dalam pembelajarannya denganmenggunakan PE (p < 0,05). Penurunan kelelahannya adalah sebesar 30,78 (73,76%);(4) pendekatan ergonomi dapat meningkatkan motivasi belajar sains pada siswa SD,antara kelompok kontrol yang dalam pembelajarannya tanpa menggunakan pendekatanergonomi (PE) dengan kelompok eksperimen yang dalam pembelajarannya denganmenggunakan PE (p < 0,05). Peningkatan motivasi belajar siswa adalah sebesar 14,65(65,81%); (5) pendekatan ergonomi dapat meningkatkan prestasi belajar dalam bidangsains pada siswa SD, antara kelompok kontrol yang dalam pembelajarannya tanpamenggunakan pendekatan ergonomi (PE) dengan kelompok eksperimen yang dalampembelajarannya dengan menggunakan PE (p < 0,05). Peningkatan prestasi belajarsiswa di bidang sains adalah sebesar 12,72 (33,70%). Dapat disarankan bahwa pembenahan di dunia pendidikan hendaknya tidak bersifat partial akan tetapi dilakukansecara multidisipliner

IMPROVEMENT OF WORK QUALITY BY APPLYING ERGONOMIC APPROACH INCREASES PERFORMANCE OF TRADITIONAL PORTERS IN BADUNG MARKET DENPASAR

Female traditional porters work every evening at Badung market from 7 pm to3.30 am. Age interval of the porters is 18 – 40 years. The weight of goods carried by asingle porter is 60 – 100 kilograms plus 1-2 kilograms of the basket’s weight, carriedon the head. The distance of each porting activity is 100 meters. From ergonomicconcept, the burden is excessive and may cause injuries such as damage ofintervertebral discs, pain, excessive fatigue and head and neck muscles disorder. Thesymptoms are more obviously seen in those over 40 years old for most of them are notvery capable of working, even some of them need medical treatment. To overcome thisnon-ergonomic work condition, a work quality improvement was carried out to 11sampled porters, including work position, method, carrying weight and equipmentdesign in order to improve the unnatural work position and to give chance to them tohave an active rest as well as to alter the static work system to be more dynamic.Results of this study were: (1) average of pressure force on L5/S1 before improvementwas 7,967.65 ± 66.78 N and after improvement was 2,983.26 ± 16.63 N; (2) average ofmusculoskeletal complaints before improvement was 61.07 ± 0.72 and afterimprovement was 42.76 ± 1.21; (3) fatigue average before improvement was 77.44 ±3.93 and after improvement was 50.36 ± 2.21; (4) pulse rate average beforeimprovement was 150.61 ± 1.06 pulses/minute and after improvement was 119.51 ±1.39 pulses/minute; and (5) average productivity before improvement was 1.78 x 10-2 ±0.01 x 10-2 and after improvement was 2.24 x 10-2 ± 0.03 x 10-2. The results analysisshowed that improvement of work quality by applying ergonomic approach coulddecrease the pressure force on L5/S1 of 60.94 % (p<0.05), musculoskeletal complaintsof 29.99 % (p<0.05), level of fatigue by 34.97 % (p<0.05) and work load by 42.59 %(p<0.05), as well as could increase the work productivity to 26.04 % (p<0.05).Therefore, it is conclused that the improvement of work quality by applying ergonomicapproach increases performance of traditional porters

INTERVAL RUNNING EXERCISE REDUCES RUNNING TIME OF 800 METERS DASH WITHOUT CAUSING INCREASED LEVEL OF SGOT – SGPT IN MALE STUDENTS OF THE FACULTY OF SPORTS SCIENCES, MANADO STATE UNIVERSITY

The effort to gain best achievement in sports by means of exercise has twodilemmatic sides, both for the coaches and sport promoters. On one side, exercise shouldbe done intensely and maximally, but on the other side, it is a known fact that excessiveand maximal exercises can damage the body organs. The purposes of this study were toobserve the side effects of interval running exercise of 800 meters, to find out level offatigue by examining lactate acid produced by each model, and to assess the negativeeffects on organs as indicated by the level of SGOT-SGPT. The exercise model appliedin the study comprised interval running of 2 x 800 meters, 4 x 400 meters, 8 x 200meters, 16 x 100 meters and one standard of comparison exercise, which was runningexercise of 2 x 800 meters with passive rest. This study was true experimental usingrandomized pre-test-post-test control group design. Samples of this study were 27 malestudents of the Faculty of Sports Sciences, Manado State University, who were dividedinto five groups. Group 1 was with interval running exercise of 2 x 800 meters. Group 2was assigned to interval running exercise of 4 x 400 meters. Group 3 was with intervalrunning exercise of 8 x 200 meters. Group 4 was with interval running exercise of 16 x100 meters. Group 5 as comparison standard was with running exercise of 2 x 800 meterspassive rest. All the exercise models were carried out for six weeks, each with afrequency of three times a week. Results of the study showed that the five groupsdemonstrated reduction of running time of 800 meters dash (p<0.05), lactate acidproduction differed in some of the groups (p>0.05), levels of SGOT and SGPT of allgroups did not show significant increase (p>0.05). From the above findings, it can beconcluded that all exercise models of interval running 2 x 800 meters, 4 x 400 meters, 8 x200 meters, 16 x 100 meters and 2 x 800 meters with passive rest lowered the runningtime of 800 meters dash and did not increase level of SGOT-SGPT

ERGONOMIC REDESIGN OF WORKING TOOLS INCREASES PERFORMANCE OF TRADITIONAL COCONUT OIL MAKERS IN THE DISTRICT OF DAWAN, KLUNGKUNG

The business of producing coconut oil in the district of Dawan, Klungkung is oneexample of small-scale home industries in the rural area. The level of working productivityof the oil makers can be categorized as relatively low, as viewed from the aspect of thefollowing indicators: (a) level of working burden, (b) musculoskeletal complaints, (c) levelof fatigue or tiredness, and (d) level of productivity. One factor that causes the lowproductivity is the fact that the working tools used in this industry are non-ergonomicallydesigned such as: (1) tool for peeling off the coconut fibers, (2) tool for taking the coconutflesh, (3) tool for grating the coconut flesh, (4) tool for extracting milk from the watermixedgrated coconut, (5) stove for boiling the coconut milk. Based on the above problemsbackground, it is necessary to make more ergonomic new design or redesign of the toolsthat are used by the coconut oil makers in the district of Dawan in order to increase theirworking performance or productivity.This research was carried out using treatment by subject design by comparing beforeand after treatment involving 22 female subjects selected by simple random method fromall female coconut oil makers in the studied area. Before treatment the research subjectswere asked to make coconut oil as usual with their traditional tools. After an interval ofwashing out period was given, the subjects entered the treatment phase in which they wereasked to make coconut oil by using the tools already redesigned ergonomically. The dataobtained from the research were analyzed by t-paired test at a significance level of 5%.Results of the analysis showed as follows: (1) average of working heart rate beforetreatment was 108.49 ± 0.95 pulse /minute and after treatment 91.92 ± 1.91 pulse /minute,indicating a decrease of workload from moderate to mild one (decrease of working heartrate of 16.59 pulse/minute or 14.69%); (2) average of musculoskeletal complaints beforetreatment was 51.73 ± 1.36 and after treatment 36.79 ± 0.83 (a decrease of 14.94 or26.17%); (3) average of fatigue before treatment was 66.75 ± 3.60 and after treatment49.50 ± 3.28 (a decrease of 17.19 or 25.83%); (4) average of working productivity beforeand after treatment was 35.86 ± 1.09 and 48.66 ± 1.10, respectively (an increase of 12.81 or35.71%). Based on evaluation of investment yield, the NVP value in a five-year period Rp.11.503.431,- &gt; 0, PBP 9.22 months &gt; 0, and RoI 32.54 &gt; 13% (rate of interest commonlyapplied in 2008).It is concluded that redesign of working tools to be more ergonomic has proven to beable to increase the working performance of coconut oil makers and hence worth investing.Novelty of this research is in the positive results related to ergonomic redesigning of thetools for making coconut oil in the district of Dawan, Klungkung by approaches to being systemic, holistic, interdisciplinary, participatory, and appropriate technology usage.Further studies on similar related working issue should focus on the aspects of workingenvironment, especially on how to overcome smoke pollutant in the kitchen area, on moreproper work station and working organization or on that related to production quality of thecoconut oil by generating maximally all the potential already in existence among the localtraditional coconut oil makers.</p