Friday, 27 April 2018 11:20

ผลงานวิจัยที่น่าสนใจ ปี 2560

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ผลงานวิจัยที่น่าสนใจระดับนานาชาติ

≻ชื่อผลงาน Can segmental model reductions quantify whole-body balance accurately during dynamic activities

ชื่อผู้วิจัย Parunchaya Jamkrajang, Mark A. Robinson, Weerawat Limroongreungrat, Jos Vanrenterghem

When investigating whole-body balance in dynamic tasks, adequately tracking the whole-body centre of mass (CoM) or derivatives such as the extrapolated centre of mass (XCoM) can be crucial but add considerable measurement efforts. The aim of this study was to investigate whether reduced kinematic models can still provide adequate CoM and XCoM representations during dynamic sporting tasks. Seventeen healthy recreationally active subjects (14 males and 3 females; age, 24.9 ± 3.2 years; height, 177.3 ± 6.9 cm; body mass 72.6 ± 7.0 kg) participated in this study. Participants completed three dynamic movements, jumping, kicking, and overarm throwing. Marker-based kinematic data were collected with 10 optoelectronic cameras at 250 Hz (Oqus Qualisys, Gothenburg, Sweden). The differences between (X)CoM from a full-body model (gold standard) and (X)CoM representations based on six selected model reductions were evaluated using a Bland-Altman approach. A threshold difference was set at±2 cm to help the reader interpret which model can still provide an acceptable (X)CoM representation. Antero-posterior and medio-lateral displacement profiles of the CoM representation based on lower limbs, trunk and upper limbs showed strong agreement, slightly reduced for lower limbs and trunk only. Representations based on lower limbs only showed less strong agreement, particularly for XCoM in kicking. Overall, our results provide justification of the use of certain model reductions for specific needs, saving measurement effort whilst limiting the error of tracking (X)CoM trajectories in the context of whole-body balance investigation Keywords: Biomechanical modeling Postural balance, Center of mass, Extrapolated center of mass, Dynamic sport activities


ผลงานวิจัยที่น่าสนใจระดับชาติ

ชื่อผลงานวิจัย PHYSICAL FITNESS PERFORMANCE AS DETERMINED BY THE EUROFIT TEST BATTERY IN THAI OVERWEIGHT/OBESE CHILDREN

ชื่อผู้วิจัย Narinrat SOMWHONG, Korakod PANICH and Amornphan AJJIMAPORN*

Introduction: In Thailand, the prevalence of overweight/obese (OW/OB) children is rapidly increasing. Those children are likely to continue obese when getting older which obesity status can affect their physiological functions in later life. For physical fitness testing in children, the Eurofit Physical Fitness (Eurofit) Test Battery has shown adequate reliability, validity and widely used. Unfortunately, there are no data on physical fitness in OW/OB children as determined by this test in Thailand. Therefore, the purpose of this study was to investigate differences in physical fitness performances between normal-weight (NW) and OW/OB children (both the boys and the girls) by using the Eurofit test battery. Methods: A total of 85 children between the ages of 10 and 12 years voluntarily participated in this study. They were further divided into 2 groups according to their body mass index (BMI); 43 children for NW group (14 boys and 29 girls) and 42 children for OW/OB group (14 boys and 28 girls). The Eurofit test battery was used to assess 5 aspects of physical fitness test including grip strength test, standing long jump test, sit and reach flexibility test, shuttle run test and 20 m endurance shuttle test. Results: In the boys, data of standing board jump, shuttle run test, 20 m endurance shuttle test were significantly different between NW and OW/OB group (p <0.05). The standing board jump shuttle run test, and 20 m endurance shuttle test in NW group were greater than OW/OB group. Except the dataof flexibility and grip strength test were not significantly different between groups. In the girls, data of grip strength was significant difference between groups (p <0.05), whereas there were no significant differences in standing board jump, flexibility, shuttle run and endurance shuttle run tests. Conclusion: As determined by the Eurofit Test Battery, dynamic performances including power, agility and endurance in the overweight/obese boys were worse than the NW groups.  Whereas the overweight/obese girls had greater hand and forearm muscles strength than the NW groups.

Keywords: The Eurofit Physical Fitness Test Battery / Body mass index / Dynamic performances /20 m. endurance shuttle test

 

รางวัลที่ได้รับ (ถ้ามี)  รางวัลรองชนะเลิศอันดับ 1 การนำเสนอผลงานทางวิชาการแบบโปสเตอร์ ในการประชุมวิชาการประจำปี 2559 “Sports Science for all” ระหว่างวันที่ 21-22 พฤศจิกายน 2559 ณ การกีฬาแห่งประเทศไทย

การจดทะเบียนทรัพย์สินทางปัญญา (ถ้ามี)   -

การเผยแพร่ผลงาน  ตีพิมพ์ในวารสาร Journal of Sports Science and Technology Volume 17, No. 1, July 2017

การนำไปใช้ประโยชน์   -

การติดต่อ Amornphan AJJIMAPORN, E-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.

ภาพประกอบเนื้อหา  -



ชื่อผลงานวิจัย Comparison between the effects of aquatic and land based exercise on respiratory muscle strength and cardio-pulmonary fitness in Thai overweight and obese participants

ชื่อผู้วิจัย  Sasipa Buranapuntalug, Khanistha Wattanananont, Chanoknan Bhakdikul, Krittavit Dangphet,
Kornanong Yuenyongchaiwat, Khajonsak Pongpanit, Rungchai Chaunchaiyakul

Introduction:  Symptoms of breathlessness during activities are common problems among overweight and
obese individuals. Further, obesity and overweight can lead to pulmonary and cardiovascular
impairments. Several studies had recommended aerobic exercise for these participants. However, this type of exercise (i.e., landed exercise) is difficult for a person with overweight because of excessive weight bearing and results in aggravates pain at lower extremities. Therefore aquatic exercise may be an alternative exercise for individuals who suffer from obesity or overweight. The purpose of this study was to compare the effects of aquatic exercise training and land based exercise training on respiratory muscle strength and cardio-pulmonary fitness in Thai overweight and obese.
Method:  The participants were male and female with overweight and obese; body mass index = 25.0 -
34.9 kg/m.2 and waist to height ratio > 0.5. All participants were randomized into two groups: Aquatic exercise (N = 25) and Land based exercise (N = 25). Each group was asked to exercise 3 times a week for 4 weeks. Respiratory muscle strength (maximal inspiratory pressure; MIP and maximal expiratory pressure; MEP) and 6 minute walk test were measured before and after training.
Result:  Aquatic exercise after training presented statistically significant increase in MIP and MEP (+13.53
± 15.66 cmH2O and +16.00 ± 18.94 cmH2O, respectively) whereas land based exercise was not significantly different. Distance from the 6 minute walking test (6MWT) increased significantly after training in both groups (+17.02 ± 30.10 m. and +10.60 ± 25.36 m., respectively).
Discussion and Conclusion:  Aquatic exercise increased respiratory muscle strength and cardio-pulmonary fitness in overweight and obesity.
Key words: Aquatic exercise, Obesity, Overweight, Respiratory muscle strength, Cardio-pulmonary fitness
รางวัลที่ได้รับ (ถ้ามี)  -
การจดทะเบียนทรัพย์สินทางปัญญา (ถ้ามี)   -
การเผยแพร่ผลงาน  Thammasat Medical Journal Vol. 17 No. 1, January-March 2017
การนำไปใช้ประโยชน์ -
การติดต่อ Rungchai CHAUNCHAIYAKUL, E-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.


ชื่อผลงานวิจัย EFFECT OF SPORTS DRINK ON REPEATED PERFORMANCE IN HEALTHY THAI MALES AFTER GLYCOGEN DEPLETION

ชื่อผู้วิจัย Sothida NANTAKOOL, Rungchai CHAUNCHAIYAKUL*, Metta PINTHONG and Saiphon KONGKUM

รายละเอียดผลงานวิจัย (โดยย่อ)
Background: Thus, for no research has differentiated the effect of carbohydrate with and without
electrolyte drinks on endurance performance. The purpose of this study was, therefore, to examine the effects of acute sports drink on endurance performance, and on cardiorespiratory variables. Method: Fourteen healthy males age-ranged 18-25 years old participated in 3 trials with 1 week separated in each. Three consecutive sessions in each trial; glycogen depletion, recovery session and endurance exercise (cycling at 70% VO2peak) were employed. Subjects were randomly assigned either sports drink10% carbohydrate ( CHO) , 0.16%electrolytes (SD), placebo 10%CHO only (PL) or plain water (WT) during 2 h recovery. Cardiorespiratory variables ( heart rate, stroke volume, cardiac output, end-diastolic volume, systemic vascular resistance, ejection fraction, respiratory rate, tidal volume and minute ventilation) were collected at pre- and post endurance exercise, time to exhaustion(TTE)and work done (WD)were recorded during 70% VO2peak. Results: The results showed longer time to exhaustion in SD group (52.93 ± 6.98 min) than PL group (45.05 ± 4.47 min) and WT group (37.95 ± 4.92 min), but significant difference was observed only between SD and WT (p<0.05). Significantly higher work done under SD and PL compared with WT group, significantly higher ejection fraction (%EF) (p<0.05) in SD than PL and WT. Moreover, significantly higher minute ventilation under SD than PL and WT ( p<0.05) was found. Conclusion: Carbohydrate with electrolyte ( SD) did not affect to cardiorespiratory function. It probably provide a longer time to exhaustion than carbohydrate alone (PL) despite no difference. At least, one of cardiac function, ejection fraction, was enhanced by using sports drink.
Keywords: Sports drink / Endurance performance /Glycogen depletion / Carbohydrate / Electrolyte

รางวัลที่ได้รับ (ถ้ามี)  -
การจดทะเบียนทรัพย์สินทางปัญญา (ถ้ามี)   -
การเผยแพร่ผลงาน  Journal of Sports Science and Technology Volume 17, No. 1, July 2017
การนำไปใช้ประโยชน์   -
การติดต่อ Rungchai CHAUNCHAIYAKUL, E-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.
ภาพประกอบเนื้อหา  -

ชื่อผลงานวิจัย ACUTE EFFECT OF DIFFERENT FIVE-MINUTE WARM-UP PROTOCOLS ON FLEXIBILITY AND SPRINT ABILITY IN COLLEGIATE SOCCER PLAYERS

ชื่อผู้วิจัย Sucheera CHUENSA-NGUAN, Kakanand SRUNGBOONMEE, Amornpan AJJIMAPORN and

รายละเอียดผลงานวิจัย (โดยย่อ)
Insufficient warm-up (WU) of substitute soccer players could limit the performance and increase risk of injury. Different WU protocols were designed to help them get an effective WU in a shorter time frame for enhancing their performances. The aim of this study is to find a five-minute WU protocol that can improve flexibility and Repeated Sprint Ability (RSA) with an acceptable fatigue, as compared to no warm up condition. Twelve healthy collegiate male soccer players participated in this study. Subjects performed 4 randomly different warm up protocols on four nonconsecutive days: (a) no warm up (NW); rest of 5 minutes, (b) dynamic warm up (DW); jogging of 2:30 minutes and 2:30-minute of dynamic warm up, (c) dynamic resistance warm up (DRW); DW plus 8 repetitions of body weight squats, and (d) dynamic sprint warm up (DSW); DW plus two 20-m shuttle sprint. Hamstring flexibility, RSA parameters and Borg’s RPE scale were measure. Flexibility was significantly improved after performing DRW and DSW, but not significant different in NW and DW, (p<0.01). DSW and DRW protocols significantly improved RSA parameters compared with NW as observed in average time and total time. The fastest time was improved only in DSW protocol (p<0.05). Fatigue for DW, DSW and DRW was not different from NW. Improved flexibility and RSA performance in DSW and DRW would be suggested for substitute soccer players with limited WU time.
Keywords: Short-duration warm up / Substitute soccer player / Body weight squats / Hamstring flexibility /
RPE scale

รางวัลที่ได้รับ (ถ้ามี)  -
การจดทะเบียนทรัพย์สินทางปัญญา (ถ้ามี)   -
การเผยแพร่ผลงาน  Journal of Sports Science and Technology Volume 17, No. 1, July 2017
การนำไปใช้ประโยชน์   -
การติดต่อ Korakod PANICH, MD, E-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.
ภาพประกอบเนื้อหา   -

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