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한국운동영양학회> PAN (Physical activity and nutrition)

PAN (Physical activity and nutrition) update

  • : 한국운동영양학회
  • : 자연과학분야  >  가정
  • : KCI등재
  • :
  • : 연속간행물
  • : 계간
  • :
  • : 2733-7545
  • : 운동영양학회지(~2011) → jenb (journal of exercise nutrition & biochemistry)(2011~)

수록정보
수록범위 : 1권1호(1997)~26권1호(2022) |수록논문 수 : 744
PAN (Physical activity and nutrition)
26권1호(2022년 03월) 수록논문
최근 권호 논문
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1Plyometric training effects on physical fitness and muscle damage in high school baseball players

저자 : Seunghyun Kim , Soung Yob Rhi , Jooyoung Kim , Jae Soon Chung

발행기관 : 한국운동영양학회 간행물 : PAN (Physical activity and nutrition) 26권 1호 발행 연도 : 2022 페이지 : pp. 1-7 (7 pages)

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[Purpose] The objective of this study was to investigate the effects of plyometric training on physical fitness and muscle damage in high school baseball players.
[Methods] The participants in the study included 21 high school baseball players who are healthy and well-training. The participants were randomly allocated to the plyometric training (n=11) and control (n=10) groups. The plyometric training was applied 3 times a week for a total of 8 weeks and the control group took part in only regular baseball skills training without plyometric training. For physical fitness, measures included maximal strength (left and right hand-grip strength), muscle endurance (sit-up), agility (side-step), power (standing long jump), and balance (left and right Rhomberg test). For muscle damage, creatine kinase (CK) and lactate dehydrogenase (LDH) levels were measured.
[Results] The results showed a significant interaction effect between time and groups in left hand-grip strength (P = 0.022), side-step (P = 0.004), and standing long jump (P < 0.001) after the 8-week plyometric training, with greater improvement in the plyometric training group than the control group. On the other hand, there was no significant interaction effect between time and groups in right hand-grip strength, sit-up, left and right Rhomberg test, CK level, and LDH level (P > 0.05).
[Conclusion] In conclusion, 8-week plyometric training had a positive effect on improving physical fitness, such as maximal strength, agility, and power, in high school baseball players without causing additional muscle damage.

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2Comparison of energy expenditure and substrate oxidation between walking and running in men and women

저자 : Akitoshi Makino , Keiichi Yamaguchi , Daichi Sumi , Masaru Ichikawa , Masumi Ohno , Kazushige Goto

발행기관 : 한국운동영양학회 간행물 : PAN (Physical activity and nutrition) 26권 1호 발행 연도 : 2022 페이지 : pp. 8-13 (6 pages)

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[Purpose] The present study compared energy metabolism between walking and running at equivalent speeds during two incremental exercise tests.
[Methods] Thirty four university students (18 males, 16 females) were recruited. Each participant completed two trials, consisting of walking (Walk) and running (Run) trials on different days, with 2-3 days apart. Exercise on a treadmill was started from initial stage of 3 min (3.0 k/m in Walk trial, 5.0 km/h in Run trial), and the speed for walking and running was progressively every minute by 0.5 km/h. The changes in metabolic variables, heart rate (HR), and rating of perceived exertion (RPE) during exercise were compared between the trials.
[Results] Energy expenditure (EE) increased with speed in each trial. However, the Walk trial had a significantly higher EE than the Run trial at speeds exceeding 92 ± 2 % of the maximal walking speed (MWS, p < 0.01). Similarly, carbohydrate (CHO) oxidation was significantly higher in the Walk trial than in the Run trial at above 92 ± 2 %MWS in males (p < 0.001) and above 93 ± 1 %MWS in females (p < 0.05).
[Conclusion] These findings suggest that EE and CHO oxidation during walking increase non-linearly with speed, and walking at a fast speed causes greater metabolic responses than running at the equivalent speed in young participants.

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3Relationship between physiological tremor and cognitive function in physically active older women

저자 : Wonil Park , Bokbeom Kim , Jaesung Lee , Gyuseog Hong , Jonghoon Park

발행기관 : 한국운동영양학회 간행물 : PAN (Physical activity and nutrition) 26권 1호 발행 연도 : 2022 페이지 : pp. 14-19 (6 pages)

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[Purpose] This study aimed to compare the physiological tremor, grip strength, and cognitive function of sedentary and physically active older adults.
[Methods] Twenty-four older adults aged ≥65 years participated in this study and were divided into the sedentary (76.5±4.4 years, n=12) and physically active (73.5±3.3 years, n=12) groups. Each group completed the Mini-Mental State Examination (MMSE) for cognitive function assessment. Physiological tremor was measured using an accelerometer for both hands at rest and the left/right hand with a 1,000 g dumbbell on the palm in neutral positions and the elbow flexed at 90°. Physical fitness was measured by grip strength and completion of the Short Physical Performance Battery (SPPB) and the 6-min walk test.
[Results] The physically active group showed a significantly lower level of physiological tremor in both hands at rest and the left/right hand with a 1,000 g dumbbell on the palm (P<0.05) than that in the sedentary group. For cognitive function, the physically active group showed significantly higher scores than those in the sedentary group (P<0.001). No significant correlation was found between cognitive function and left/right grip strength (left: r = 0.117, P = 0.585; right: r = 0.230, P = 0.279), physiological tremor in both hands at rest (left: r = -0.524, P < 0.001; right: r = -0.508, P < 0.05), and the left/right hand with a 1,000 g dumbbell on the palm (left: r = -0.505, P < 0.05; right: r = -0.458, P < 0.05).
[Conclusion] Physiological tremor of the hands has the potential to be a useful predictor of cognitive function in older adults.

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4Effects of gradient and age on energy expenditure and fat metabolism during aerobic exercise at equal intensity in women

저자 : Ha-na Ahn , Man-gyoon Lee , Won-sang Jung

발행기관 : 한국운동영양학회 간행물 : PAN (Physical activity and nutrition) 26권 1호 발행 연도 : 2022 페이지 : pp. 20-27 (8 pages)

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[Purpose] This study aimed to investigate the effects of gradient and age on energy expenditure and fat metabolism during aerobic exercise at equal intensity in women.
[Methods] Thirty women in their twenties (n=15) and fifties (n =15) were enrolled. All subjects performed aerobic exercise on a treadmill for 10 min at 0% and 6% gradient repeatedly to elicit 50%, 60%, and 70% VO2max.
[Results] Energy expenditure and fat oxidation were higher during aerobic exercise at 6% of the gradient than at 0%, and there was no significant difference in carbohydrate oxidation in any age group.
[Conclusion] Aerobic exercise at a 6% gradient was more favorable for fat oxidation than a 0% gradient in all age groups. In particular, in the case of women in their fifties, walking on a gradient of 6%, which is favorable for increasing fat oxidation, was more effective than walking on flat ground for preventing and reducing obesity. However, to examine the difference in fat oxidation among exercise intensities more accurately, exercise performed for longer than 30 min is required. Follow-up studies are required to investigate the effect of various gradients on physiological and metabolic characteristics when carrying out aerobic exercises for more than 30 min.

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5A high-whey-protein diet does not enhance mechanical and structural remodeling of cardiac muscle in response to aerobic exercise in rats

저자 : Kevin Boldt , Venus Joumaa , Jeannine Turnbull , Paul W. M. Fedak , Walter Herzog

발행기관 : 한국운동영양학회 간행물 : PAN (Physical activity and nutrition) 26권 1호 발행 연도 : 2022 페이지 : pp. 28-38 (11 pages)

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[Purpose] Aerobic exercise training results in distinct structural and mechanical myocardial adaptations. In skeletal muscle, whey protein supplementation is effective in enhancing muscle adaptation following resistance exercise. However, it is unclear whether cardiac adaptation to aerobic exercise can be enhanced by systematic protein supplementation.
[Methods] Twelve-week-old rats were assigned to 12 weeks of either sedentary or aerobic exercise with either a standard (Sed+Standard, Ex+Standard) or high-protein (Sed+Pro, Ex+Pro) diet. Echocardiography was used to measure cardiac structural remodeling and performance. Skinned cardiac fiber bundles were used to determine the active and passive stress properties, maximum shortening velocity, and calcium sensitivity.
[Results] Aerobic training was characterized structurally by increases in ventricle volume (Ex+Standard, 19%; Ex+Pro, 29%) and myocardial thickness (Ex+Standard, 26%; Ex+-Pro, 12%) compared to that of baseline. Skinned trabecula r fiber bundles also had a greater unloaded shortening velocity (Sed+Standard, 1.04±0.05; Sed+Pro, 1.07±0.03; Ex-+Standard, 1.16±0.04; Ex+Pro, 1.18±0.05 FL/s) and calcium sensitivity (pCa50: Sed+Standard, 6.04±0.17; Sed+Pro, 6.08±0.19; Ex+Standard, 6.30±0.09; Ex+Pro, 6.36±0.12) in trained hearts compared to that of hearts from sedentary animals. However, the addition of a high-protein diet did not provide additional benefits to either the structural or mechanical adaptations of the myocardium.
[Conclusion] Therefore, it seems that a high-whey-protein diet does not significantly enhance adaptations of the heart to aerobic exercise in comparison to that of a standard diet.

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6Pharmacological systemic analysis of gardenia fructus against nonalcoholic fatty liver disease and validation of animal models

저자 : Kang Pa Lee , Kibong Kim , Eunhee Yoon , Suji Baek , Sang-hyun Ahn

발행기관 : 한국운동영양학회 간행물 : PAN (Physical activity and nutrition) 26권 1호 발행 연도 : 2022 페이지 : pp. 39-45 (7 pages)

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[Purpose]We aimed to investigate the systemic pharmacological analysis of gardenia fructus (GF) and the proof of concepts. We examined the antioxidant and anti-inflammatory effects in high-fat (HF) diet mice.
[Methods] The active compounds of GF and the target genes were identified using the Traditional Chinese Medicine Database and Analysis Platform (oral bioavailability ≥ 30%, Caco-2 permeability ≥ -0.4, and drug-likeness ≥ 0.18). The rats were divided into four groups: untreated group, HF group, HF and metformin (17 mg/kg) treated group, and HF and treated with GF (28 mg/kg) for 8 weeks group. Hepatic lesion changes and markers were analyzed using hematoxylin and eosin staining and immunohistochemistry assay.
[Results] In the systemic analysis, we identified 14 active compounds including A, B, and C. From these 14 compounds, 242 biological target genes were identified. The top 10 Gene Ontology were analyzed using GO-biological process analysis: removal of superoxide radicals, regulation of endothelial cell apoptotic process, and cellular response to lipopolysaccharide. GF extracts in high-fat diet-induced non-alcoholic fatty liver disease (NAFLD) mice models significantly regulated hepatic lesion markers, such as mTOR, 8-Hydroxy- 2'-deoxyguanosine as well as oxidative stress activities, TGF-β, and phosphorylation of ERK1/2.
[Conclusion] These results suggest that GF, as an exercise supplement, can alleviate NAFLD disease or fatty liver inflammation. Further studies are required to verify the synergistic effect of GF treatment combined with exercise, which is known to alleviate NAFLD and fatty liver inflammation.

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