JER [Journal of Exercise Rehabilitation]

간행물 정보
  • 자료유형
  • 발행기관
    한국운동재활학회 [Korean Society of Exercise Rehabilitation]
  • ISSN
  • 간기
  • 수록기간
  • 등재여부
  • 주제분류
    의약학 > 재활의학
  • 십진분류
    KDC 514.03 DDC 617.03
Vol.14 No.1 (24건)



Considering on the exercise rehabilitation and the Journal of Exercise Rehabilitation

Chang-Ju Kim

한국운동재활학회 JER Vol.14 No.1 2018.02 p.1

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Anabolic steroid-induced hypogonadism : a challenge for clinicians

Hyun Jun Park

한국운동재활학회 JER Vol.14 No.1 2018.02 pp.2-3

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Original Article


Treadmill exercise activates PI3K/Akt signaling pathway leading to GSK-3β inhibition in the social isolated rat pups

Lin Ru Wang, Seung-Soo Baek

한국운동재활학회 JER Vol.14 No.1 2018.02 pp.4-9

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Social isolation is known to precipitate depression-like symptoms in ro-dents and has emerged as a dependable paradigm to screen the be-havioral and neurobiological changes observed in humans. In the pres-ent study, the undying mechanisms of treadmill exercise on social isola-tion-induced depression was evaluated. The rat pups in the social iso-lation groups were housed individually. The social isolation procedures started on the postnatal day 14. The rat pups in the exercise groups were forced to run on treadmill for 30 min once a day from postnatal day 21 to postnatal day 34. The expression of phosphoinositide 3 kinase (PI3K), tyrosine kinase B (Akt), and glycogen synthase kinase 3β (GSK-3β) in the hippocampus were determined by using western blot analy-sis. The ratio phosphorylated PI3K (p-PI3K)/PI3K and phosphorylated Akt (p-Akt)/Akt were decreased and the ratio of phosphorylated-GSK-3 (p-GSK-3β)/GSK-3β was increased by social isolation. Treadmill exer-cise increased the ratio p-PI3K/PI3K and p-Akt/Akt and suppressed the ratio of p-GSK-3β/GSK-3β in the hippocampus of social isolated rat pups. Treadmill exercise activates PI3K/Akt signaling pathway leading to GSK-3β inhibition in social isolated rats. These results suggested that tread-mill exercise may improve depressive symptoms via activation of PI3K/Akt signaling pathway.



Effects of exercise on sexual function and central mechanism in the streptozotocin-induced diabetic rats

Jae-Min Lee, Tae-Woon Kim, Hye-Sang Park, Sang-Seo Park, Mal-Soon Shin, Yun-Hee Sung, Tae-Beom Seo, Young-Pyo Kim

한국운동재활학회 JER Vol.14 No.1 2018.02 pp.10-15

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Diabetes mellitus is associated with the impairment of sexual function including desire and orgasmic dysfunction. Sexual dysfunction in the diabetes mellitus is due to a selective defect of the nitric oxide synthase (NOS) within paraventricular nucleus (PVN). c-Fos is an immediate ear-ly gene and c-Fos expression represents neuronal activity in response to various stimuli. In the present study, we investigated the effects of treadmill exercise on sexual behaviors and the expressions of NOS and c-Fos in the PVN were evaluated using streptozotocin (STZ)-induced diabetic rats. Diabetes mellitus was induced by intraperitoneal injection of STZ. The rats in the treadmill exercise groups were made to run on a treadmill for 30 min once a day during 4 weeks. Male sexual behaviors were evaluated by recording the number of mounting, intromission, and ejaculation frequency. The present results revealed that treadmill exer-cise ameliorated sexual dysfunction in the STZ-induced diabetic rats. Treadmill exercise restored the contents of NOS and c-Fos in the PVN. The improving effect of treadmill exercise on sexual function can be considered as the neuronal activating effect of exercise through in-creasing expressions of NO and c-Fos.



Exercise training regulates angiogenic gene expression in white adipose tissue

Hyuek Jong Lee

한국운동재활학회 JER Vol.14 No.1 2018.02 pp.16-23

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White adipose tissue (WAT) expansion is associated with angiogenesis. Although, activation of lipolysis by exercise induces adipocyte hypotro-phy and reduction of fat mass, it is poorly understood whether exercise regulates angiogenesis by altering angiogenic gene expression in WAT. Therefore, the purpose of this study was to evaluate the effect of 6 weeks voluntary wheel running exercise on angiogenic gene expres-sion in adipose tissues. Male C57BL/6J mice performed voluntary wheel running for 6 weeks. At 24 hr after the last exercise training, tibialis an-terior (TA), soleus (Sol), epididymal WAT (eWAT), inguinal WAT (iWAT), and brown adipose tissue (BAT) were isolated and then the expressions of vascular endothelial growth factor A (VEGFA), angiopoietin1 (Ang1), Ang2, platelet-derived growth factor B (PDGF-B) and their correspond-ing receptors were analyzed by reverse transcription-polymerase chain reaction. In skeletal muscles, VEGFA expression was upregulated in TA and Sol and PDDGF-B expression was increased in Sol after exercise training. In eWAT, the expressions of VEGFA and Flk-1 were dramatical-ly downregulated, whereas Ang2 and PDGFRβ was upregulated after exercise training. In iWAT, VEGF expression was increased with the downregulation of Ang1. However, there was no alteration of any of these genes in BAT. These results suggest that angiogenic gene ex-pression is altered by exercise training and voluntary wheel running regulates VEGFA, Ang1, and Ang2 expressions in a fat depot specific manner.



Association of sericin and swimming on the phenotype, motor plate, and functionality of the denervated plantar muscle of Wistar rats

André Junior Santana, Jean Carlos Debastiani, Regina Inês Kunz, Pamela Buratti, Rose Meire Costa Brancalhão, Lucinéia de Fátima Chasko Ribeiro, Márcia Miranda Torrejais, Gladson Ricardo Flor Bertolini

한국운동재활학회 JER Vol.14 No.1 2018.02 pp.24-31

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Physical exercise may help maintain muscle properties and functional improvement after peripheral nerve lesion, which may be enhanced by using biocompatible substances, such as sericin. The aim of this study was analyse the effect of sericin associated with swimming exercise on the phenotype, innervation, and functionality of the plantar muscle of Wistar rats. Forty randomly divided adult rats were used in five groups of eight animals: control, injury, sericin, exercise, exercise and sericin. The application of sericin was done on the spot, 100 μL, shortly after nerve compression. Three days after sciatic nerve compression, the swimming and swimming and sericin groups were submitted to physical swimming exercise for 21 days. Afterwards, the animals were euthanised and the plantar muscle was dissected and submitted to histochemical and histoenzymological techniques. The grip strength test did not show alterations in muscular functionality, and the control presented greater muscle mass in relation to the other groups, the same did not occur for muscle length. Polymorphic neuromuscular junctions were detected in the groups, although without significant morphometric alterations of the area, major and minor diameters. The percentage of type I fibres was lower in the lesion group and there was no difference in fibres IIa and IIb between groups. The area of fibres I, IIa and IIb remained constant between groups. Sericin biopolymer combined with swimming exercise did not affect plantar muscle function, submitted to experimental axonotmosis, whose contractile properties were altered by nerve injury.



Effects of regular-moderate exercise on high-fat diet-induced intramyocellular lipid accumulation in the soleus muscle of Sprague-Dawley rats

Kyung-Wan Baek, Hee-Jae Cha, Mee Sun Ock, Hong Soo Kim, Jeong-An Gim, Jung-Jun Park

한국운동재활학회 JER Vol.14 No.1 2018.02 pp.32-38

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Previously, we monitored the expression level of the pro-apoptotic proteins caspase-3 and cleaved poly-ADP-ribose polymerase in the skeletal muscle of high-fat diet-induced obese rats in order to assess muscle damage. In this study, we analyzed whether exercise or dietary adjustment was more effective at preventing high-fat diet-induced muscle damage. High-fat diet-induced obese rats were divided into three groups: the high-fat diet (HFD), the combined high-fat diet and exercise (HFD+EXE), and the dietary adjustment (DA) groups. For 6 weeks, the HFD+EXE group was subjected to exercise on an animal treadmill. Capsase-3 protein was quantified, and histopathology of the soleus muscle was performed. Both the HFD+EXE and DA interventions resulted in a reduction of lipid accumulation in the soleus muscle, and nucleus infiltration was significantly lower in the DA group. The inflammatory response, caspase-3 level, and relative muscle weight were significantly higher in the HFD+EXE group compared to the HFD group. An increase in intramyocellular lipids in the soleus muscle by obesity and exercise stimulated apoptosis. When the rats exercised, muscle growth was normal and unrelated to the effects of lipid accumulation. These data indicate that exercise was more effective than dietary adjustment in reducing lipid accumulation and increasing muscle metabolism.



Effects of virtual reality exercise for Korean adults with schizophrenia in a closed ward

Garam Jo, Brenda Rossow-Kimball, Gwitaek Park, Yongho Lee

한국운동재활학회 JER Vol.14 No.1 2018.02 pp.39-48

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The purpose of this study was to examine the effects of virtual reality exercise (VRE) using Nintendo Wii-Fit on physical fitness of Korean adults with schizophrenia living in a mental health facility located in South Korea. Two male participants diagnosed with schizophrenia, ages 53 and 61, were recruited and selected for inclusion in this study. The intervention using the Nintendo Wii-Fit consisted of 35-min ses-sions, 3 times per week for 8 weeks and was facilitated by the primary researcher and two graduate students. The senior fitness test and 10-m walking test were used to measure the physical functioning, specifical-ly, physical fitness and mobility, of the participants. The study was divid-ed into three phases using an A-B-A single-subject design and involved multiple repeated measures of functional physical fitness. Both partici-pants were evaluated each week for the duration of 18 weeks. Both participants exhibited measureable improvement in some of the physi-cal fitness measures, but not in the mobility. These results thus provide preliminary evidence to support the use of VRE to improve physical function for Korean adults with schizophrenia as an alternative exercise regimen to the conventional exercise.



The efficacy and safety of whole-body electromyostimulation in applying to human body : based from graded exercise test

Yong-Seok Jee

한국운동재활학회 JER Vol.14 No.1 2018.02 pp.49-57

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Recently, whole body-electromyostimulation (WB-EMS) has upgraded its functions and capabilities and has overcome limitations and incon-veniences from past systems. Although the efficacy and safety of EMS have been examined in some studies, specific guidelines for applying WB-EMS are lacking. To determine the efficacy and safety of applying it in healthy men to improve cardiopulmonary and psychophysiological variables when applying WB-EMS. Sixty-four participants were ran-domly grouped into control group (without electrical stimuli) or WB-EMS group after a 6-week baseline period. The control group (n=33; female. 15; male, 18) wore the WB-EMS suit as much as the WB-EMS group (n=31; female, 15; male, 16). There were no abnormal changes in the cardiopulmonary variables (heart rate, systolic blood pressure [SBP], diastolic blood pressure, and oxygen uptake) during or after the graded exercise test (GXT) in both groups. There was a significant de-crease in SBP and an increase of oxygen uptake from stages 3 to 5 of the GXT in the WB-EMS group. The psychophysiological factors for a WB-EMS group, which consisted of soreness, anxiety, fatigability, and sleeplessness were significantly decreased after the experiment. The application of WB-EMS in healthy young men did not negatively affect the cardiopulmonary and psychophysiological factors. Rather, the ap-plication of WB-EMS improved SBP and oxygen uptake in submaximal and maximal stages of GXT. This study also confirmed that 6 weeks of WB-EMS training can improve psychophysiological factors.



Feasibility online survey to estimate physical activity level among the students studying professional courses : a cross-sectional online survey

Bhumika Sudha, Asir John Samuel, Kanimozhi Narkeesh

한국운동재활학회 JER Vol.14 No.1 2018.02 pp.58-63

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The aim of the study was to estimate the physical activity (PA) level among the professional college students in North India. One hundred three professional college students in the age group of 18–25 years were recruited by simple random sampling for this cross-sectional online survey. The survey was advertised on the social networking sites (Facebook, WhatsApp) through a link www.surveymonkey.com/r/MG- 588BY. A Short Form of International Physical Activity Questionnaire was used for this survey study. The questionnaire included total 8 questions on the basis of previous 7 days. The questionnaire consists of 3 main categories which were vigorous, moderate and high PA. Time spent in each activity level was multiplied with the metabolic equivalent of task (MET), which has previously set to 8.0 for vigorous activity, 4.0 for moderate activity, 3.3 for walking, and 1.5 for sitting. By multiplying MET with number of days and minutes performed weekly, amount of each activity level was calculated and measured as MET-min/wk. Further by adding MET minutes for each activity level, total MET-min/wk was calculated. Total number of 100 students participated in this study, and it was shown that all professional course students show different levels in PA. The total PA level among professional college students, which includes, physiotherapy, dental, medical, nursing, lab technician, pharmacy, management, law, engineering, were 434.4 (0–7,866), 170.3 (0–1,129), 87.7 (0–445), 102.8 (0–180), 469 (0–1,164), 0 (0–0), 645 (0–1,836), 337 (0–1,890), 396 (0–968) MET-min/wk respectively. PA levels among professional college students in North India have been established.



Injury survey in Choi Kwang Do (CKD) martial art practitioners around the world : CKD is a safe form of training for adults

Yong-Seok Jee, Denny Eun

한국운동재활학회 JER Vol.14 No.1 2018.02 pp.64-71

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Among the many sports and activities to choose from, martial arts are becoming increasingly popular for health and fitness. Due to the differ-ent nature of the various styles of martial arts, injuries are not uncom-mon. Though there have been studies on the injury rates of several martial art styles, there have been none regarding Choi Kwang Do (CKD), a noncompetitive martial art with relaxed and fluid movements designed to promote health and fitness for people of all ages. The pur-pose of this study was to examine the rate of injury for adults training in CKD to find out whether this is a safe style of martial art for adults. This study found the prevalence, causes, severity, and types of injuries from CKD practitioners around the world through an online survey targeting adults (n=122), aged 18 or older, with varying years of training experi-ence. The annual rate of injury was 11.73 for every 100 CKD practi-tioners. There was no correlation between the length of training experi-ence and injury. Training frequency and duration had no significant re-lationship with injury rates. A significant positive relationship between training intensity and injury existed (P=0.009). The results of the study found that CKD can be an attractive option for adults of any age who are looking to learn a martial art or choose a physical activity with a low risk of injury, however the training intensity should be kept at a level that is not excessively high.



Comparison of isokinetic trunk flexion and extension torques and powers between athletes and nonathletes

Amira Ben Moussa Zouita, Fatma Zohra Ben Salah, Catherine Dziri, Chris Beardsley

한국운동재활학회 JER Vol.14 No.1 2018.02 pp.72-77

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This study is aimed to perform and compare maximal concentric isoki-netic trunk extension and flexion torques and powers between high-lev-el athletes and a control population. In addition, the ratio of isokinetic trunk extension and flexion torques was measured, and compared be-tween groups. Eighteen high-level male athletes and 15 male nonath-letes without low back pain were recruited. Subjects performed isoki-netic trunk extension and flexion at 60˚/sec, 90˚/sec, and 120˚/sec through a maximal range of motion in a dynamometer. Trunk extension torque of athletes was significantly higher than in nonathletes at 60˚/sec and 90˚/sec but not at 120˚/sec. Trunk extension power of athletes was significantly higher than the control group at 90˚/sec and 120˚/sec but not at 60˚/sec. There was no difference between the athlete and non-athlete groups in respect of trunk flexion torque or power at any angular velocity. Consequently, the ratio of trunk flexion to extension strength was greater in nonathletes than in athletes. Trunk extension and flexion torques tended to decrease, and trunk extension and flexion powers tended to increase, with increasing angular velocity. High-level athletes seem to display preferentially greater trunk extension strength and power in comparison with trunk flexion strength, compared to nonath-letes. This could be caused by the use of strength training exercises such as squats and deadlifts, or it may be associated with greater ath-letic performance.



The effect of warm-ups with stretching on the isokinetic moments of collegiate men

Hyoung-Kil Park, Min-Kyung Jung, Eunkyung Park, Chang-Young Lee, Yong-Seok Jee, Denny Eun, Jun-Youl Cha, Jaehyun Yoo

한국운동재활학회 JER Vol.14 No.1 2018.02 pp.78-82

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Performing warm-ups increases muscle temperature and blood flow, which contributes to improved exercise performance and reduced risk of injuries to muscles and tendons. Stretching increases the range of motion of the joints and is effective for the maintenance and enhance-ment of exercise performance and flexibility, as well as for injury pre-vention. However, stretching as a warm-up activity may temporarily de-crease muscle strength, muscle power, and exercise performance. This study aimed to clarify the effect of stretching during warm-ups on mus-cle strength, muscle power, and muscle endurance in a nonathletic population. The subjects of this study consisted of 13 physically active male collegiate students with no medical conditions. A self-assessment questionnaire regarding how well the subjects felt about their physical abilities was administered to measure psychological readiness before and after the warm-up. Subjects performed a non–warm-up, warm-up, or warm-up regimen with stretching prior to the assessment of the isokinetic moments of knee joints. After the measurements, the respec-tive variables were analyzed using nonparametric tests. First, no statis-tically significant intergroup differences were found in the flexor and extensor peak torques of the knee joints at 60˚/sec, which were as-sessed to measure muscle strength. Second, no statistically significant intergroup differences were found in the flexor and extensor peak torques of the knee joints at 180˚/sec, which were assessed to measure muscle power. Third, the total work of the knee joints at 240°/sec, in-tended to measure muscle endurance, was highest in the aerobic-stretch-warm-ups (ASW) group, but no statistically significant differ-ences were found among the groups. Finally, the psychological readi-ness for physical activity according to the type of warm-up was signifi-cantly higher in ASW. Simple stretching during warm-ups appears to have no effect on variables of exercise physiology in nonathletes who participate in routine recreational sport activities. However, they seem to have a meaningful effect on exercise performance by affording psy-chological stability, preparation, and confidence in exercise perfor-mance.



Effect of rapid weight loss and glutamine supplementation on immunosuppression of combat athletes : a double-blind, placebo-controlled study

Aline C. C. Tritto, Mariane T. Amano, Maria E. De Cillo, Vinicius A. Oliveira, Sandro H. Mendes, Caroline Yoshioka, Hamilton Roschel, Niels Olsen S. Camara, Bruno Gualano, Guilherme G. Artioli

한국운동재활학회 JER Vol.14 No.1 2018.02 pp.83-92

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The role of plasma glutamine concentration and glutamine supplemen-tation on immunosuppression was investigated in combat athletes. Twenty-three male athletes were randomly assigned to receive gluta-mine (21 g/day, n=12) or placebo (ovalbumin, n=11) for 10 days. Six athletes who did not lose weight served as controls. Athletes were as-sessed 21 days before (-21d), 1 day before (-1d) and 5 days after (+5d) a competition. Weight reduction was similar between glutamine (-8.2%± 4.1%) and placebo (-8.5%±2.4%) and negligible in control (-0.6%±1.4%). In both weight-loss groups, the majority of athletes reported symptoms of upper respiratory symptoms, as assessed by the Wisconsin upper respiratory symptom survey questionnaire. Only two athletes reported symptoms in the control group. Immune cell function remained un-changed throughout the study except for an increase in neutrophil phagocytic activity (placebo: -21d=5,251±2,986; -1d=17,428±22,374; +5d=21,125±21,934; glutamine: -21d=6,096±3,549; -1d=11,029±17,113; +5d=28,186±21,032 FI) and a minor change in monocyte phagocytic activity (placebo: -21d=4,421±3,634; -1d=3,329±6,283; +5d=3,243± 2,553; glutamine: -21d=4,051±3,186; -1d=3,106±2,625; +5d=4,981± 4,598) in both glutamine and placebo after weight loss. Plasma gluta-mine and cortisol remained unchanged across the study. creatine ki-nase levels were increased in placebo (-21d=125.2±54.1; -1d=187.2± 73.5; +5d=111.3±59.1 U/L) but not in glutamine (-21d=136.2±58.2; -1d= 168.8±65.0; +5d=129.7±64.0 U/L). Rapid weight loss increased the fre-quency and severity of infection symptoms, but this was neither associ-ated with plasma glutamine depletion nor counteracted by glutamine supplementation.



Effect of official judo matches on handgrip strength and perceptual responses

Rafael Lima Kons, Juliano Dal Pupo, Jonathan Ache-Dias, Thyago Garcia, Romário Rodrigues da Silva, Luiz Felipe Guarise Katicips, Daniele Detanico

한국운동재활학회 JER Vol.14 No.1 2018.02 pp.93-99

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This study aimed to verify the effect of judo matches on handgrip strength and perceptual responses during an official tournament in medalists and nonmedalists. Thirty-four male judo athletes participated in an offi-cial judo tournament. Before the first match and immediately after each match, maximum isometric handgrip strength and rate of perceived ex-ertion overall and in specific areas were assessed. Analysis of variance for repeated measures was used to compare variables before the first match and after each match, and t-test was used to compare medalists and nonmedalists with the level of significance set at 5%. Also, effect size (ES) analysis was used. The results showed decrease in handgrip strength in both hands from the third match (P<0.05). The rate of per-ceived exertion (RPE) increased from the first match and remained high over the subsequent matches (P<0.001). A very large effect for nonmed-alist group (ES=3.44) and large effect for medalist group (ES=1.94) was found in the third match compared to prematch. Forearm and fingers were the body regions most cited by athletes in both groups. We con-cluded that an official judo competition induced significant drop in hand-grip strength from the third match and increased the RPE from first match. Medalists seem to have better recovery after the third match compared to nonmedalists.



Changes of gait pattern, muscle activity, and perceived comfort in response to variations of height-elevating insoles in young adults

Se-Yeon Park, Du-Jin Park

한국운동재활학회 JER Vol.14 No.1 2018.02 pp.100-105

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The purpose of this study was to investigate changes of gait pattern, muscle activity, and perceived comfort in response to variations of height-elevating insoles (HEIs) in young adults. The subjects of this study were 30 young adults who voluntarily consented to participate in this experiment after listening to its purpose and method. They were di-vided into 3 groups who wore HEIs height (0, 3, and 7 cm). Each group consisted of 10 young adults and wore the HEIs for 4 hr a day. Electro-myographic signals were collected from the tibialis anterior, the gas-trocnemius, the hamstring, and the right and the left erector spinae (ES) before and after walking with the HEI. Gait pattern was measured be-fore and after walking with the HEI. Perceived comfort was measured after a subject wore the insoles for 4 hr. The activities of ES showed significant differences among the three groups. The activity of the left ES was significantly different between groups 1 (0 cm) and 2 (3 cm) and groups 1 and 3 (7 cm). The activity of the right ES was significantly dif-ferent between groups 1 and 3. The left stride length and the left step length showed significant differences between groups 1 and 3. Per-ceived comfort was significantly different among the three groups. As the HEIs increased, the activities of ES were gradually increased and the left step length and stride were decreased. Using of higher HEIs over 4 hr may be occurred excessive activities of the ES, abnormal gait patterns, and perceived discomfort.



Sprint interval training on the vertical treadmill improves aerobic and anaerobic running performance

Alastair Ross Jordan, David Claxton, Alison Purvis, Andrew Barnes, Mary Fysh

한국운동재활학회 JER Vol.14 No.1 2018.02 pp.106-112

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The vertical treadmill (VertiRun) is an unresearched mode of exercise where users engage in a “running-like” action whilst body weight is supported by a recumbent bench and overhanging resistance cables are tethered to the user’s ankles. The purpose of this study was to de-termine the effects of training on a VertiRun and any cross-training ef-fect on running performance. Thirty active males (age, 22±4 years; stature, 1.79±0.08 m; body mass, 78.5±12.6 kg) volunteered for this study. Participants’ aerobic and anaerobic running performance were deter-mined by incremental maximum rate of oxygen consumption (VO2max) treadmill test and a maximum anaerobic running test (MART), respec-tively. Participants were matched and then randomly assigned to either a VertiRun group, 20-m shuttle sprint group or control group. The inter-vention consisted of 4–6, 30-sec all-out efforts with 4-min recovery be-tween bouts, 3 days a week for 6 weeks. The pre- and postintervention VO2max and MART were analysed using a mixed repeated measures analysis of variance. MART increased by 4.5% in the VertiRun group (P=0.006) and 4% in the sprint group (P<0.001). VO2max increased by 6.2% in the VertiRun group (P=0.009) and 5.5% in the sprint group (P=0.020). The MART and VO2max of the control group were unchanged (P=0.910 and P=0.915, respectively). These data suggest that the Ver-tiRun could be an effective cross-training mode for running and could supplement training programmes. Also, as VertiRun is a low-impact ex-ercise it might be useful in the physical preparation of athletes returning to sport following lower limb injury.



Acute effects of endurance exercise on nocturnal autonomic functions in sedentary subjects : a pilot study

Emi Yuda, Yoshifumi Moriyama, Toshihiko Mori, Yutaka Yoshida, Makoto Kawahara, Junichiro Hayano

한국운동재활학회 JER Vol.14 No.1 2018.02 pp.113-117

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Nocturnal heart rate variability (HRV) is thought to reflect healthy recov-ery function of the autonomic nervous system. Although exercise is recommended for health promotion, exercise itself decreases HRV. We studied acute effect of daytime exercise on nocturnal HRV in 5 healthy adults (age, 22–40 years; 2 female subjects) without regular exercise habit. Using a treadmill, they performed 30-min walking at 4 km/hr and 30-min running at 9 km/hr from 11 a.m. on different days at an interval of 2 weeks. On these days and a day without exercise (control), Holter electrocardiograms were recorded from 9 a.m. for 24 hr. The amplitudes of low-frequency (LF, 0.04–0.15 Hz) and high-frequency (HF, 0.15–0.45 Hz) components of HRV were measured continuously by complex de-modulation and were averaged over periods of 11:00–11:30 a.m., 3 hr af-ter going to bed, and time in bed at night. Exercise intensities of the walking and running were at 10% to 44% and 55% to 67% of heart rate reserve, respectively. During exercise, heart rate increased and LF and HF amplitudes decreased with exercise intensity. Nocturnal heart rate and LF and HF amplitude, however, showed no consistent changes with exercise intensity and their averages on the days of walking and run-ning did not differ significantly from those of the control day. In conclu-sion, 30-min walking and running exercises performed in the morning had no significant acute effects on nocturnal heart rate or HRV.



Impact of a 12-week high-intensity interval training without caloric restriction on body composition and lipid profile in sedentary healthy overweight/obese youth

Marwa Khammassi, Nejmeddine Ouerghi, Sameh Hadj-Taieb, Moncef Feki, David Thivel, Anissa Bouassida

한국운동재활학회 JER Vol.14 No.1 2018.02 pp.118-125

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Although High-intensity interval training (HIIT) has shown its effective-ness in improving body composition, cardio-respiratory fitness and lipid profile in obese adults, evidences remain limited in overweight/obese youth. This study was conducted to investigate the effect of a 12-week HIIT program without caloric restriction on body composition and lipid profile among young overweight/obese men. Twenty healthy obese youth were randomly allocated into two groups; experimental group (HIIT) and control group. The HIIT program consisted in 3 exercises sessions per week (30 sec of work at 100% maximal aerobic velocity [MAV]) interspersed by 30 sec of active recovery at 50% MAV, starting by 15 repetitions to reach 27 by the end of the program. Aerobic capaci-ty (MAV and maximum oxygen uptake [VO2max]), body composition (body mass index [BMI], waist circumference [WC], and fat mass percent) and lipid profile (triglycerides [TG] and total, high-density lipoprotein [HDL] and low-density lipoprotein [LDL] cholesterol) were determined before and after the HIIT program. Following 12 weeks of HIIT, WC, BMI (P<0.01), and fat mass percent (P<0.05) were significantly decreased. MAV and VO2max were significantly improved in the HIIT group, only. To-tal cholesterol (P<0.05) and TG (P<0.05) decreased significantly in the HIIT group, while LDL and HDL cholesterol levels remained unchanged in both groups. HIIT may be particularly useful in overweight/obese youth to improve body composition, aerobic fitness and lipid profile.



Effects of ninety minutes per week of continuous aerobic exercise on blood pressure in hypertensive obese humans

Felipe Lovaglio Belozo, Carlos K. Katashima, André V. Cordeiro, Luciene Lenhare, Jean F. Alves, Vagner Ramon Rodrigues Silva

한국운동재활학회 JER Vol.14 No.1 2018.02 pp.126-132

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The main objective of this study was to examine the effect of continu-ous aerobic training (CAT) in hypertensive, obese people. Seven pa-tients of average age (45.3±3.9 years), height (1.63±0.1 m), body weight (89.09±22.0 kg), and body mass index (33.44±8.6 kg/m2) were subjected to the training. CAT was performed in thrice-weekly nonconsecutive sessions (90 min per week) with intervals of 48 hr between each ses-sion. The training sessions entailed 30 min of walking at an intensity of 70%–80% of the maximum heart rate (MHR) on a treadmill over a period of eight weeks, giving a total of 24 sessions. Through correlation analy-ses, we found significant improvement in the systolic pressure (R=0.5675, P=0.0253) and diastolic pressure (R=0.7083, P=0.0088) when the last session was compared to the first session of training. We found no differences in the diastolic pressure and systolic pressure be-fore, during and after 15 min of the protocol exercise. The program showed a large effect size (ES) for systolic pressure (ES=0.85) and a small ES for diastolic pressure (ES=0.33). We found no differences in the blood pressure (BP) and heart rate (HR) during and after the training of obese hypertensive humans, but we found a positively significant correlation between HR and BP in the last session and a large ES, sug-gesting that this protocol exercise might have significance effect in the long term.



Relationship between ankle range of motion and Biodex Balance System in females and males

Eun-Sook Sung, Jung-Hyun Kim

한국운동재활학회 JER Vol.14 No.1 2018.02 pp.133-137

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This study examined whether there are differences between range of motion (ROM) and balance in lower extremities according to gender. A total of 31 male and 28 female students measured plantar flexion (PF), dorsiflexion, inversion (IV), eversion (EV), hip flexion (HF), hip internal ro-tation (HIR), and hip external rotation (HER) and tested on the Biodex Balance System. ROM of PF and HF were significantly high the female group and ROMs of IV, EV, HIR, and HER were significantly higher the male group than in the female group. Low ROM of PF may be more neg-ative related to overall balance, especially, back balance in males; therefore, it is necessary to assess and plan the training program for PF ROM in male students.



Acute effects of one session dry needling on a chronic golfer’s elbow disability

Ardalan Shariat, Pardis Noormohammadpour, Amir Hossein Memari, Noureddin Nakhostin Ansari, Joshua A. Cleland, Ramin Kordi

한국운동재활학회 JER Vol.14 No.1 2018.02 pp.138-142

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A 40-year-old retired male elite athlete with more than 20 years’ experience in wrestling and bodybuilding with mild elbow pain and disability of 2 years presented to our clinic reporting an acute pain in medial aspect of the elbow. Physical examination revealed symptoms of left Golfer’s elbow during target-directed movements. The results of sonography in left elbow showed low level of hypo echo irregularity and increased blood flow in color Doppler mode in the common flexor origin. The pain amplitude was moderate at rest and extremely high during kinetic and intentional movements. During last 2 years, the patient tried different types of therapy including manual therapy, Transcutaneous electrical nerve stimulation and also received a variety of injections none of which were effective for reducing pain and disability. This is the first study showed that one sessions of dry needling improved both pain and disability and helped to return to a normal life and exercise training.



Pre- and postoperative postural regulation following anterior cruciate ligament reconstruction

Thomas Bartels, Kay Brehme, Martin Pyschik, Stephan Schulze, Karl-Stefan Delank, Georg Fieseler, Kevin G. Laudner, Souhail Hermassi, René Schwesig

한국운동재활학회 JER Vol.14 No.1 2018.02 pp.143-151

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There are currently no longitudinal data describing the pre- and postop-erative postural regulation and stability of patients with anterior cruci-ate ligament (ACL) damage. Therefore, the aim of this study was to evaluate postural regulation and stability prior to and during rehabilita-tion following surgery of the ACL. Fifty-four physically active subjects (age: 30.5±10.9 years, 29 male subjects) were examined with the Inter-active Balance System pre-, 6, and at 12 weeks following surgical re-construction of the ACL using a hamstring tendon graft. The average period of time from injury to surgery was 27 days. Data were calculated with unifactorial and univariate analysis of variance. Significant effects were found for the somatosensory system (η2=0.115), stability indicator (η2=0.123), weight distribution index (η2=0.176), and synchronization (foot coordination) (η2=0.249). Involved side weight distribution (param-eter: left) increased significantly (patients with left-sided/right-sided in-jury: η2=0.234/0.272). Load distribution to the heel remained stable during all three examination periods (η2=0.035 and η2=0.071), although a remarkable load at forefoot was observed. In seven out of 10 parame-ters partial effects were seen during the first 6 weeks after surgery. The results of this study indicated that injury of the ACL and subsequent surgical reconstructions result in postural regulation, with improve-ments in somatosensory system function, postural stability, weight dis-tribution index, and foot coordination. Also, overloading of the injured side on the feet reduces significantly during rehabilitation. Thus, the ini-tial phase of rehabilitation (weeks 1 to 6) seems to be more effective than the second period (weeks 6 to 12) postoperatively.



Effect of wearing positions of load on the dynamic balance during gait

Seung-Hyun Hyun, Che-Cheong Ryew

한국운동재활학회 JER Vol.14 No.1 2018.02 pp.152-155

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The study aim to analyze the influence on dynamic stability relative to positions carrying with weight during gait, for which experiment partici-pated with healthful adult males (n=9), were performed under three-di-mensional (3D) conditions of no load (NL), right of trunk (RT), and front of trunk (FT). The kinematic and kinetic conclusions obtained from 3D cinematography and ground reaction force system were as follows; 1-step time elapsed showed longest in NL of all, and maximum velocity of RT showed slower than NL and FT, which resulted in significant level at (P<0.05) respectively. While NL showed slower average velocity than RT and FT, RT showed larger incline angle (extrapolated center of mass θ) than NL and FT, which resulted in significant level at (P<0.01) respectively. Also FT showed larger peak vertical force than NL and RT, which resulted in significant level at (P<0.001). Because gait pattern is regarded it as a success when fulfilled both forward propulsive force and dynamic stability, we may ensure that each other active strategy for securement and performance in a situation carrying with 20 kg of the same weight in forward and lateral plane was mobilized. However, participants in pathological gait such as leg injury, and exercise rehabil-itation during walking should avoid carrying loads bag to ensure dy-namic stability.


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