• 대한간호학회지
• /
• 제51권3호
• /
• pp.294-304
• /
• 2021

Purpose: This study aimed to investigate objectively measured physical activity (PA) in institutionalized older adults with mild cognitive impairment (MCI) and to elucidate the influence of autonomic nervous function, salivary cortisol, and PA on cognitive functions based on neurovisceral integration model. Methods: Overall cognitive function was evaluated using the mini-mental state examination (MMSE) and executive function was evaluated using semantic verbal fluency test and clock drawing test. Actigraph for PA, HRV and sAA for autonomous function, and the geriatric depression scale for depression were used. Saliva specimens were collected in the morning for sAA and cortisol. Results: Ninety-eight older adults from four regional geriatric hospitals participated in the study. They took 4,499 steps per day on average. They spent 753.93 minutes and 23.12 minutes on average in sedentary and moderate-to-vigorous activity, respectively. In the multiple regression analysis, lower salivary cortisol level (β = - .33, p = .041) and greater step counts (β = .37, p = .029) significantly improved MMSE score. Greater step count (β = .27, p = .016) also exerted a significant influence on verbal fluency, and greater sAA (β= .35, p = .026) was significantly associated with a better clock drawing test result. Conclusion: Salivary cortisol, sAA and physical activity were significantly associated with cognitive functions. To prevent older adults from developing dementia, strategies are needed to increase their overall PA amount by decreasing sedentary time and to decrease salivary cortisol for cognitive function, and to maintain their sympathetic nervous activity for executive function.

• 한국운동역학회지
• /
• 제32권3호
• /
• pp.103-110
• /
• 2022

Objective: The aim of this study was to investigate effect of core stabilization exercises on the erector spinae contractile properties and trunk isokinetic muscle function of middle age with low physical activity and sedentary lifestyle. Method: Twenty (female: n=10, male: n=10) middle-age subjects (age: 37.25 ± 6.08 years, height: 168.01 ± 6.84 cm, weight: 71.37 ± 11.75 kg) participated in this study. Tensiomyography was measured on the erector spinae, and the isokinetic trunk muscle function test was measured at an angular velocity of 60 °/s and 90 °/s. All subjects performed the core stabilization exercises for 60 min per day, 3 times a week, for 7 weeks. A paired t-test was performed with a significance level of 0.05. Results: Tensiomyography of the erector spinae revealed a significant post-exercise increase in the maximum radial displacement (p < .05) and velocity of contraction (p < .05), however, there wasn't a significant post-exercise change in the contraction time. Additionally, the isokinetic muscle function test of the trunk revealed a significant post-exercise increase in trunk extensor relative strength (p < .05) and strength ratio (p < .05). Conclusion: Our results indicated that core stabilization exercises reduced erector spinae muscle stiffness, increased the velocity of erector spinae contraction. Additionally, data showed the improvement in the trunk extensor strength help induce a more balanced development in trunk muscle.

• 동의생리병리학회지
• /
• 제20권5호
• /
• pp.1211-1216
• /
• 2006

The effect of a chronic programme of either low- or moderate-to-high-intensity treadmill running on the activation of the Extracellular-signal regulated protein kinase (ERK1/2), Phosphorylated ERK 1/2(pERK1/2) and the Phosphorylated c-Jun N-terminal kinase(pJNK) pathways was determined in rat Back skin Hair follicle. Sprague-Dawley rats were assigned to one of three groups: (i) sedentary group(NE; n=10); (ii) low-intensity exercise group (Bm/min; LIE; n=10); and (iii) moderate-high-intensity exercise group(28m1min; HIE; n=10). The training regimens were planned so that animals covered the same distance and had similar utilization for both LIE and HIE exercise sessions. The report runs as follows; A single bout of LIE or HIE following 4 weeks of exercise led to a twofold increase in the phosphorylation of ERK2, pERK2 and a threefold increase in pJNKl, pERKl. ERKI phosphorylation in LIE Back skin sampled and pJNK2 in HIE Back skin sampled 48h after the last exercise bout was similar to sedentary values, while pJNK2 phosphorylation in LIE Back skin sampled was 70-80% lower than sedentary. 48h after the last exercise bout of LIE or HIE increased ERK2, pERKl and pJNKl expression, with the magnitude of this increase being independent of prior exercise intensity or duration. PERK1/2, pJNKl expression was increased Three- to fourfold in Back skin Hair follicle sampled 48h after the last exercise bout irrespective of the prior exercise programme, but ERKI expression in HIE Back skin sampled was approximately 90% lower than sedentary values. In conclusion, exercise-training of different jntensities/durations results in selective postexercise activation of intracellular signal pathways, which may be one mechanism regulating specific adaptations induced by diverse training programmes.

• 대한지역사회작업치료학회지
• /
• 제10권2호
• /
• pp.47-61
• /
• 2020

목적 : 본 연구에서는 노인들의 신체적 활동을 일 관련 신체활동, 운동 및 여가 신체활동, 이동 관련 신체활동, 앉아서 하는 활동으로 나누어 신체적 활동 유형 별 참여 여부가 노인들의 건강 관련 삶의 질과 정신건강에 어떤 관계가 있는지 알아보았다. 연구방법 : 본 연구는 2016년에 수행된 제7기 1차년도 국민건강영양조사(The 7^th Korea National Health and Nutrition Examination Survey KNHANES VII-1)에서 건강 설문조사에 응한 65세 이상 978명을 대상으로 수행되었다. 신체활동유형, 건강관련 삶의 질(EQ-5D), 우울지수(PHQ-9), 스트레스 인지수준, 수면시간 등의 관계성을 복합표본설계선형회귀분석으로 알아보았다. 결과 : 신체활동은 건강 관련 삶의 질과 정신건강에 있어, 강도 높은 일이나 가사활동에 참여할 경우는 부정적인, 중강도 이상의 여가에 참여하는 경우 긍정적인 영향을 주고 있음을 알 수 있었다. 앉아서 하는 활동의 시간이 많을수록 건강 관련 삶의 질에 부정적 영향을 준다는 다른 연구 결과와는 다르게 노인들의 앉아서 하는 활동은 건강 관련 삶의 질과 정신건강에 긍정적 영향을 주었다. 결론 : 연구 결과, 우리나라 노인은 여가 관련 신체활동과 앉아서 하는 활동은 건강 관련 삶의 질에 긍정적이며, 일과 관련된 신체활동은 삶의 질을 낮추는 부정적 요인으로 작용한 것으로 해석할 수 있었다. 이러한 국내 노인들을 대상으로 한 신체활동의 수준과 건강 관련 결과를 바탕으로 노인 대상의 의미·목적있는 작업중심 활동 프로그램을 수립할 때 참고하도록 해야 할 것이다.

• 한국컴퓨터정보학회논문지
• /
• 제27권6호
• /
• pp.157-165
• /
• 2022

이 연구는 불안정 지지면 코어운동이 안정 지지면의 코어운동에 비해 요통이 있는 여성 좌업근로자의 기능적 움직임, 균형력 및 통증에 더 효과가 있는지를 분석하는 것이 목적이다. 요통이 있는 여성 좌업근로자 20명을 불안정 지지면 코어운동 집단(UEG; n=10)과 안정적 지지면 코어운동집단(SEG; n=10)으로 무작위 배정한 후, 불안정 지지면 코어운동과 안정 지지면 코어운동 프로그램을 집단별로 8주간 적용하였다. 운동처치 전·후 FMS, Y-Balance 및 VAS를 측정하여 모든 측정결과에 대한 반복이원변량분석을 실시하였고, 시기와 집단 간 상호작용이 있을 경우 집단 별로 대응표본 t-test를 실시한 결과는 다음과 같다. FMS는 UEG의 HS(p<.01), ASLR(p<.05) 및 TS(p<.001)에서 유의한 효과가 나타났으며, 그 외의 변인에서는 유의한 효과가 없었다. YBT는 AT, PL, PM, TS의 모든 변인에서 집단별 유의한 효과가 나타나지 않았지만, 모든 집단에서 시기 간에 유의한 차이가 있었다. VAS는 UEG집단에서 유의하게 감소하는 효과가 나타났다(p<.001). 결론적으로 여성 좌업근로자의 불안정 지지면 코어운동은 안정지지면 코어운동에 비해 기능적 움직임과 통증에는 효과가 있지만, 균형력 발달에는 효과가 미미한 것으로 나타났다.

• 한국체육학회지인문사회과학편
• /
• 제54권5호
• /
• pp.727-737
• /
• 2015

본 연구는 사무직 근로자를 대상으로 비타민 D 상태와 생활습관위험인자간의 연관성을 조사하고자 하였다. S시의 30세 이상 사무직 근로자 515명(남 336명, 여 179명)을 대상으로 혈청 비타민 D 수준, 비만지표, 체력, 대사성위험인자 및 혈중 지질 그리고 좌식습관을 포함한 생활습관위험인자를 측정하였다. 혈청 비타민 D 수준을 기준으로 결핍(<20 ng/mL), 부족(20-29 ng/mL), 충분(≥30 ng/mL) 집단으로 구분하고, 집단 간 생활습관위험인자를 비교하였다. 분석결과, 비타민 D 수준이 높아질수록 체지방율(p=.030)과 좌식습관(p<.001)은 통계적으로 유의하게 감소하는 선 경향성이 나타났으며, 골격근량(p=.037), 심폐체력(p<.001) 그리고 HDL-C(p=.013)은 통계적으로 유의하게 증가하는 선 경향성이 나타났다. 또한 심폐체력이 낮은 집단이 높은 집단보다 비타민 D 부족 또는 결핍에 노출될 상대적 위험도가 남녀 각각 2.144배(95%CI .469-1.808, p=.042), 1.971배(95%CI .305-1.974, p=.045) 정도 높게 나타났으며, 좌식시간이 가장 많은 집단이 가장 적은 집단보다 비타민 D 부족 또는 결핍에 노출될 상대적 위험도는 여성 사무직 근로자 집단에서만 1.262배(95%CI 0.074-1.527 p=.043) 정도 높게 나타났다. 이와 같이 본 연구에서는 사무직 근로자의 낮은 비타민 D 수준은 낮은 심폐체력 및 장시간의 좌식습관과 관련성이 있는 것으로 나타났다. 따라서 사무직 근로자의 건강증진과 충분한 비타민 D 공급을 위해 건강한 생활습관 변화와 근무 환경 개선이 우선적으로 필요할 것으로 판단된다.

• 한국환경성돌연변이발암원학회지
• /
• 제22권4호
• /
• pp.243-247
• /
• 2002

Prolonged exercise is known to increase steady-state serum high-density lipoprotein cholesterol (HDL-cholesterol) and apolipoprotein AI(apo AI) concentrations. We investigated the effect of adaptation to endurance exercise on the association of the genetic polymorphism in the apo AI gene with these biochemical parameters. 108 male subjects were randomly selected from a group of elite athletes, and 65 male samples used as sedentary control group from Korean general population. The genetic polymorphism in the apo AI gene locus was detected by polymerase chain reaction(PCR) and DNA digestion with Msp I restriction endonuclease. The genotype frequency for the Msp I RFLP was significantly different between the elite athletes and sedentary controls(P<0.05). There were, however, no significant associations between the Msp I RFLP of the apo AI gene and the biochemical parameters in elite athletic group. Therefore, our findings indicate that the Msp I RFLP of the apo AI gene was not associated with the serum apo AI and HDL-cholesterol concentrations in Korean male elite athletes.

• Journal of Nutrition and Health
• /
• 제34권8호
• /
• pp.929-935
• /
• 2001

The purpose of this study was to investigate the effects of regular maternal exercise on maternal nutrients intake and pregnancy outcome. The number of subjects were 567 pregnant women at local general hospital in Daegu. General characteristics data and 24- hour food recalls were collected by trained interviewer. Structured interview and medical record review were carried out at first prenatal and delivery visit(included age, delivery history, height, pre-pregnancy weight, and pregnancy outcome etc). Regular exercise performance was surveyed at third trimester and 31.4% of subjects exercised regularly Overall weight gains during pregnancy were 13.9 $\pm$ 3.8kg and 14.7 $\pm$ 4.7kg in the exercise and sedentary group, respectively. The type of exercise was mainly strolling and light aerobic exercise. Usually firstpara subjects exercised more regularly than multipara subjects. There is no significant difference between regular exercise and severity of morning sickness. Weight gain during pregnancy was not relate to regular exercise. Though there is not statistically significant, the nutrients intakes were higher in regular exercise group than in sedentary group. We concluded regular exercise during pregnancy neither influenced pregnancy weight gain, severity of morning sickness nor baby birth weight but it could affect the nutritional and health statues of mother.

• 한국주거학회논문집
• /
• 제3권1호
• /
• pp.85-92
• /
• 1992

A floor system have played a major part in the living in Korean house. It is an essential element in the residential houses. Uufortunately, a design method of the floor heating system for the human thereat comfort has not established in Korea system. This paper aims to review the previous researches to find the issue for the futher study of comfort floor heating design. The following results were obtained: 1) Nevins et at conducted experiments on the effect of the comfortable of floor and air temperatures on the psychological responses by a large number of subjects. Its objective was to find the combined condition to obtain thermal comfort for sedentary posture.7here has never been researches regarding a sitting Person on the heated floor. 2) Some investigation in Japan on the effect of floor heating system on a sitting person on the floor have been conducted for these years, but they are net based on the human heat balance but on only psychological responses. 3) Hirayama et al developed an indication method of the effect of heat conduction on the sedentary person.4) There are few researches on the human thermal comfort compared whth indoor environmental researches on mechanical controls in Korea. Thus, the further study on the followings in needed the estimaiing of heat conduction between tile hunman body and a floor, developing an index expressed the combined effect of convection, radiation and conduction and its associated experiments.

• 한국산업융합학회 논문집
• /
• 제17권4호
• /
• pp.203-210
• /
• 2014

In this study, we present a method for correcting unbalanced sitting posture alignment to its optimal position, by designing a chair equipped with pressure sensor. With increasement in sedentary work, such as office work or study, people are now spending more time in chair. To accommodate sedentary life styles, many chairs are being designed for a comfortable sitting condition. However, without awareness and efforts for correct sitting posture, it may not be possible to achieve such condition. When the weight is not distributed evenly while sitting, it may cause various diseases such as scoliosis and a herniated disc. Being inspired by such facts, we have progressed basic researches to maintain the correct sitting posture. To demonstrate the proof-of-concept validation, we installed a series of sensors to a chair and then measured the changes in pressure distribution in various postures. The results show that this approach can be potentially helpful for understanding how fundamental problems due to unbalanced sitting posture can be corrected and maintained properly.