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한국운동영양학회> JENB (Journal of Exercise Nutrition & Biochemistry)

JENB (Journal of Exercise Nutrition & Biochemistry) update

  • : 한국운동영양학회
  • : 자연과학분야  >  가정
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  • : 2233-6834
  • : 2233-6842
  • : 운동영양학회지(~2011) → jenb (journal of exercise nutrition & biochemistry)(2011~)

수록정보
수록범위 : 1권1호(1997)~24권3호(2020) |수록논문 수 : 706
JENB (Journal of Exercise Nutrition & Biochemistry)
24권3호(2020년 09월) 수록논문
최근 권호 논문
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1Effect of mild-intensity exercise training with capsiate intake on fat deposition and substrate utilization during exercise in diet-induced obese mice

저자 : Deunsol Hwang , Jong-beom Seo , Jisu Kim , Kiwon Lim

발행기관 : 한국운동영양학회 간행물 : JENB (Journal of Exercise Nutrition & Biochemistry) 24권 3호 발행 연도 : 2020 페이지 : pp. 1-6 (6 pages)

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[Purpose] While the anti-obesity effects of exercise and capsiate are well-observed individually, the effect of exercise with capsiate intake has not been systematically explored yet. Therefore, the purpose of this study is to investigate whether the anti-obesity effects of exercise training can be further enhanced by capsiate intake.
[Methods] 8-week-old male mice were divided into 3 groups (n = 8 per group): sedentary group (SED; non-trained), exercise-trained group (EXE) and exercise-trained group with 10 mg/kg of capsiate intake (EXE+CAP). All mice were offered high-fat diet and water ad libitum. The mild-intensity treadmill training was conducted 5 times a week for 8 weeks. After 8 weeks, metabolism during exercise and abdominal fat weight were measured.
[Results] Body weight and the rate of total abdominal fat were significantly less in EXE+CAP than in SED but not between EXE and SED. The average of respiratory exchange rate during exercise was significantly much lower in EXE+SED (p = 0.003) compared to the difference between EXE and SED (p = 0.025). Likewise, the fat oxidation during exercise was significantly much higher in EXE+SED (p = 0.016) compared to the difference between EXE and SED (p = 0.045). Then, the carbohydrate oxidation during exercise was significantly much lower in EXE+SED (p = 0.003) compared to the difference between EXE and SED (p = 0.028).
[Conclusion] In conclusion, the anti-obesity functions of exercise training can be further enhanced by capsiate intake by increasing fat oxidation during exercise. Therefore, we suggest that capsiate could be a candidate supplement which can additively ameliorate obesity when combined with exercise.

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2Effects of endurance exercise under hypoxia on acid-base and ion balance in healthy males

저자 : Sang-seok Nam , Hun-young Park

발행기관 : 한국운동영양학회 간행물 : JENB (Journal of Exercise Nutrition & Biochemistry) 24권 3호 발행 연도 : 2020 페이지 : pp. 7-12 (6 pages)

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[Purpose] This study was performed to investigate the acid-base and ion balance at rest and after exercise in healthy males under normoxia, moderate hypoxia, and severe hypoxia.
[Methods] Ten healthy Korean males completed three different trials on different days, comprising exercise under normoxia (FiO2 = 20.9%, N trial), moderate hypoxia (FiO2 = 16.5%, MH trial), and severe hypoxia (FiO2 = 12.8%, SH trial). They undertook endurance exercise for 30 min on a cycle ergometer at the same relative exercise intensity equivalent to 80% maximal heart rate under all conditions. Capillary blood samples were obtained to determine acid-base and ion balance at rest and after exercise.
[Results] Exercise-induced blood lactate elevations were significantly increased as hypoxic conditions became more severe; SH > MH > N trials (P = 0.003). After exercise, blood glucose levels were significantly higher in the SH trial than in the N and MH trials (P = 0.001). Capillary oxygen saturation (SCO2) levels were significantly lowered as hypoxic conditions became more severe; SH > MH > N trials (P < 0.001). The pH levels were significantly lower in the MH trial than that in the N trial (P = 0.010). Moreover, HCO3- levels were significantly lower in the SH trial than in the N trial, with significant interaction (P = 0.003). There were no significant differences in blood Na+, K+, and Ca2+ levels between the trials.
[Conclusion] MH and SH trials induced greater differences in glucose, lactate, SCO2, pH, and HCO3- levels in capillary blood compared to the N trial. Additionally, lactate, SCO2, and HCO3- levels showed greater changes in the SH trial than in the MH trial. However, there were no significant differences in Na+, K+, and Ca2+ levels in MH and SH trials compared to the N trial.
[Key words] acute hypoxia, metabolic stress, capillary

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3The effect of eleutherococcus senticosus on metabolism-associated protein expression in 3T3-L1 and C2C12 cells

저자 : Takeshi Hashimoto , Yoko Okada , Atsushi Yamanaka , Natsuhiko Ono , Keisuke Uryu , Isafumi Maru

발행기관 : 한국운동영양학회 간행물 : JENB (Journal of Exercise Nutrition & Biochemistry) 24권 3호 발행 연도 : 2020 페이지 : pp. 13-18 (6 pages)

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[Purpose] In vivo studies have demonstrated the ergogenic benefits of eleutherococcus senticosus (ES) supplementation. ES has been observed to enhance endurance capacity, improve cardiovascular function, and alter metabolic functions (e.g., increased fat utilization); however, the exact mechanisms involved remain unknown. We aimed to determine whether ES could effectively induce fat loss and improve muscle metabolic profiles through increases in lipolysis- and lipid metabolism-associated protein expression in 3T3-L1 adipocytes and C2C12 skeletal muscle cells, respectively, to uncover the direct effects of ES on adipocytes and skeletal muscle cells.
[Methods] Different doses of ES extracts (0.2, 0.5, and 1.0 mg/mL) were added to cells (0.2 ES, 0.5 ES, and 1.0 ES, respectively) for 72 h and compared to the vehicle control (control).
[Results] The intracellular triacylglycerol (TG) content significantly decreased (p < 0.05 for 0.2 ES, p < 0.01 for 0.5 ES and 1.0 ES) in 3T3-L1 cells. Adipose triglyceride lipase, which is involved in active lipolysis, was significantly higher in the 1.0 ES group than in the control group (p < 0.01) of 3T3-L1 adipocytes. In C2C12 cells, the mitochondrial protein voltage-dependent anion channel (VDAC) was significantly increased in the 1.0 ES group (p < 0.01). Furthermore, we found that 1.0 ES activated both 5' AMP-activated protein kinase (AMPK) and acetyl-CoA carboxylase (ACC) in skeletal muscle cells (p < 0.01).
[Conclusion] These findings suggest that ES extracts decreased TG content, presumably by increasing lipase in adipocytes and metabolism-associated protein expression as well as mitochondrial biogenesis in muscle cells. These effects may corroborate previous in vivo findings regarding the ergogenic effects of ES supplementation.

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4Therapeutic effect of Shinkiwhan, herbal medicine, regulates OPG/RANKL/RANK system on ovariectomy-induced bone loss rat

저자 : Il-bok Seo , Kang Pa Lee , Sun-young Park , Sang-hyun Ahn

발행기관 : 한국운동영양학회 간행물 : JENB (Journal of Exercise Nutrition & Biochemistry) 24권 3호 발행 연도 : 2020 페이지 : pp. 19-24 (6 pages)

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[Purpose] Although physical activity is required to prevent or ameliorate osteoporosis, medicine prescription should precede it, since it may be limited in severe osteoporosis patients. Furthermore, osteoporosis has a great effect on physical activity disorders that accompany fractures and pain, and therefore, research on treatment or prevention to decrease the number of patients is required. The purpose of this study was to discover candidate substances from natural products with an effective pharmacological action and to prepare basic data to help patients.
[Methods] To prepare the osteoporosis model, ovariectomy (OVX) was performed using surgical methods. The prepared prescription [Shinkiwhan (SKH), a Korean medicine] was administered orally at a dose of 210 mg/kg/day for 8 weeks. After completion of the animal experiment, the bone mineral density (BMD) was analyzed using double-energy X-ray absorptiometry. The analysis of the effect of drugs on bones was performed using histological analysis and immunostaining.
[Results] SKH increased the BMD in the OVX rats. Furthermore, SKH significantly increased the expression of osteoprotegerin and downregulated receptor activator of nuclear factor kappa B ligand and phosphorylation of c-jun N-terminal kinases in the bones of the OVX model.
[Conclusion] Our findings suggest a protective effect of SKH against BMD loss in the OVX model.

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5A systematic review of the biological mechanisms linking physical activity and breast cancer

저자 : Bok Sil Hong , Kang Pa Lee

발행기관 : 한국운동영양학회 간행물 : JENB (Journal of Exercise Nutrition & Biochemistry) 24권 3호 발행 연도 : 2020 페이지 : pp. 25-31 (7 pages)

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[Purpose] Epidemiological evidence has shown that leisure-time physical activity and structured exercise before and after breast cancer diagnosis contribute to reducing the risk of breast cancer recurrence and mortality. Thus, in this review, we aimed to summarize the physical activity-dependent regulation of systemic factors to understand the biological and molecular mechanisms involved in the initiation, progression, and survival of breast cancer.
[Methods] We systematically reviewed the studies on 1) the relationship between physical activity and the risk of breast cancer, and 2) various systemic factors induced by physical activity and exercise that are potentially linked to breast cancer outcomes. To perform this literature review, PubMed database was searched using the terms “Physical activity OR exercise” and “breast cancer”, until August 5th, 2020; then, we reviewed those articles related to biological mechanisms after examining the resulting search list.
[Results] There is strong evidence that physical activity reduces the risk of breast cancer, and the protective effect of physical activity on breast cancer has been achieved by long-term regulation of various circulatory factors, such as sex hormones, metabolic hormones, inflammatory factors, adipokines, and myokines. In addition, physical activity substantially alters whole-body homeostasis by affecting numerous other factors, including plasma metabolites, reactive oxygen species, and microRNAs as well as exosomes and gut microbiota profile, and thereby every cell and organ in the whole body might be ultimately affected by the biological perturbation induced by physical activity and exercise.
[Conclusion] The understanding of integrative mechanisms will enhance how physical activity can ultimately influence the risk and prognosis of various cancers, including breast cancer. Furthermore, physical activity could be considered an efficacious non-pharmacological therapy, and the promotion of physical activity is probably an effective strategy in primary cancer prevention.

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6Effects of exercise training on the biochemical pathways associated with sarcopenia

저자 : Dae Yun Seo , Boo Geun Hwang

발행기관 : 한국운동영양학회 간행물 : JENB (Journal of Exercise Nutrition & Biochemistry) 24권 3호 발행 연도 : 2020 페이지 : pp. 32-38 (7 pages)

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[Purpose] Sarcopenia is considered one of the major causes of disability in the elderly population and is highly associated with aging. Exercise is an essential strategy for improving muscle health while aging and involves multiple metabolic and transcriptional adaptations. Although the beneficial effects of exercise modalities on skeletal muscle structure and function in aging are well recognized, the exact cellular and molecular mechanisms underlying the influence of exercise have not been fully elucidated.
[Methods] We summarize the biochemical pathways involved in the progression and pathogenesis of sarcopenia and describe the beneficial effects of exercise training on the relevant signaling pathways associated with sarcopenia.
[Results] This study briefly introduces current knowledge on the signaling pathways involved in the development of sarcopenia, effects of aerobic exercise on mitochondria-related parameters and mitochondrial function, and role of resistance exercise in the regulation of muscle protein synthesis against sarcopenia.
[Conclusion] This review suggested that the beneficial effects of exercise are still under-explored, and accelerated research will help develop better modalities for the prevention, management, and treatment of sarcopenia.

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7Curcumin supplementation and delayed onset muscle soreness (DOMS): effects, mechanisms, and practical considerations

저자 : Wan-young Yoon , Kihyuk Lee , Jooyoung Kim

발행기관 : 한국운동영양학회 간행물 : JENB (Journal of Exercise Nutrition & Biochemistry) 24권 3호 발행 연도 : 2020 페이지 : pp. 39-43 (5 pages)

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[Purpose] In this literature review we aimed to investigate the effects of curcumin supplementation on delayed onset muscle soreness (DOMS), which occurs after exercise, and evaluate related parameters to propose practical recommendations for the field of exercise physiology.
[Methods] Experimental studies conducted on curcumin supplementation and DOMS were systematically reviewed to determine (1) the effect of curcumin supplementation on DOMS, (2) potential mechanisms by which curcumin supplementation may attenuate DOMS, and (3) practical considerations for curcumin supplementation.
[Results] While several studies have reported that curcumin supplementation attenuates DOMS after exercise, others have reported that curcumin supplementation has no effect on DOMS. Several mechanisms have been proposed by which curcumin supplementation may attenuate DOMS; the most probable of which is a reduction in inflammatory response. Other potential mechanisms include modulation of transient receptor potential vanilloid 1 (TRPV1) or changes in post-exercise capillary lactate levels; these require further examination. The usual recommended dose of curcumin is 150-1500 mg daily (sometimes up to 5 g), divided into 2-3 portions and taken before and after exercise. It is not necessary to take curcumin together with piperine.
[Conclusion] Although conflicting results regarding the effects of curcumin supplementation on DOMS exist in literature, it may be considered as a method of nutritional intervention for reducing post-exercise DOMS.

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