• Tuberculosis and Respiratory Diseases
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• 제61권3호
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• pp.227-232
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• 2006

연구배경: 기도가역성 측정시, 1초간 노력성 호기량(forced expiratory volume in one second, $FEV_{1}$)과 노력성 폐활량(forced vital capacity, FVC)은 흔히 사용되는 지표인데 양성반응의 권장기준은 기저치보다 증가치가 절대량이 200ml이상 그리고 백분율로는 12%이상의 두 조건을 다 만족하는 것이다. 그러나 노인 환자는 천식에 합당한 병력을 가지고 있어도 기도가역성의 진단기준을 만족시키지 못하는 경우가 종종 있다. 저자들은 6초간 노력성 호기량($FEV_{6}$)이 노인의 기도가역성 검사에서 역할을 알아보고자 하였다. 방 법: 65세 이상의 노인환자 중 폐기능검사에서 $FEV_{1}$/FVC가 80%미만인 236명에게 폐활량측정법으로 기도가역성 검사를 시행하였다. 기저 $FEV_{1}$에 따라 다음과 같이 세 군으로 분류하였으며 각 군에서의 FVC, $FEV_{6}$, $FEV_{1}$의 지표에 따른 기도가역성를 비교분석하였다. 제1군 : $$FEV_{1}{\geq_-}80%$$, 제2군 : $FEV_{1}$ 60~80%, 제3군 : $$FEV_{1}{\leq_-}60%$$ 결 과: 전체 환자에서 기도가역성은 각각의 지표에 따라 $FEV_{1}$에서는 33명(14.0%), $FEV_{6}$는 55명(23.3%), FVC는 55명(23.3%)로 양성반응을 보였고, 제3군($$FEV_{1}{\leq_-}60%$$)에서는 $FEV_{1}$을 지표로 할 때는 15명(22.4%), $FEV_{6}$는 30명(44.8%), FVC는 32명(47.8%)으로 나타났다. 결 론: 본 연구에서는 $FEV_{6}$가 노인환자에서 기도가역성 검사의 새로운 보완적 지표로서의 역할을 보여줬지만 이의 일반화를 위해서는 좀 더 많은 연구가 필요할 것이다.

• The Journal of Korean Physical Therapy
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• 제16권4호
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• pp.115-128
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• 2004

The purpose of this study was to evaluate respiratory functions in relation to the gross motor functions(total value of GMFM), the difference of chest girth, and the changing position in spastic children. The respiratory functions(FVC, FEV1, $FEV1\%$, and PEF) were measured in the supine, the $45^{\circ}$semi-sitting, and the $45^{\circ}$sitting in 9 subjects. In the supine position, the mean difference of chest girth was $1.56{\pm}0.80cm$, the total value of GMFM was $45.41{\pm}17.79\%$. In the supine position, there was significant positive relationship in FVC-FEV1, FVC-PEF, and FEV1-PEF, but there was no significant relationship in GMFM and all respiratory functions. In the $45^{\circ}$semi-sitting, there was significant positive relationship in GMFM-FVC, FVC-FEV1, FVC-PEF, FEV1-PEF, and $FEV1\%-PEF$. In the $90^{\circ}$sitting, there was significant positive relationship in GMFM-FEV1, $GMFM-FEV1\%$, FVC-FEV1, FVC-PEF, and FEV1-PEF. In results of measured respiratory functions according to the postures, the supine position had highest value in all respiratory functions, but there were no significant (p<0.05).

• Tuberculosis and Respiratory Diseases
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• 제42권3호
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• pp.332-341
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• 1995

연구목적: 폐쇄성 기도 질환자에서 기관지 확장제에 대한 반응의 평가는 그 반응의 가역성 유무에 따라 진단, 치료 그리고 예후 판단에 도움이 된다. 기관지 확장제 반응 지표는 폐쇄성 기도 질환자에서 기관지 확장 반응을 보다 예민하게 찾아낼 수 있어야 하고 폐쇄 정도에 따라 그 예만도가 일정하여야 하며, 그리고 처음 FEV1값에 크게 좌우되지 않아야 폐쇄성 기도 질환자에서 효과적으로 기관지 확장제 반응을 평가할 수 있다. 방법: 영남대학교 의과대학 부속병원 내과를 내원하여 폐쇄성 기도질환자로 진단받은 환자 75명을 대상으로 하여 fenoterol 흡입전과 흡입후 10분에 각각 폐기능 검사(2800 Autobox plethysmograph Gould electronics)를 시행하였으며, 이들 중 가역 반응을 보인 환자들을 처음 $FEV_1$(% pred)값에 따라 중증군, 중등증군, 경증군으로 나누어, American Thoracic Society에서 정한 가역성반응의 기준에 따라 기관지 가역 반응을 나타내는 5가지 지표($FEV_1$, FVC, $FEF_{25\sim75%}$, Isovolume $FEF_{25\sim75%}$, sGaw)들에서 그 예민도를 조사하였고 그리고 폐쇄성 기도 질환자 75명에서 $FEV_1$으로 가역반응을 나타내는 4가지 지표인 absolute, % initial, % predicted, %possible으로 구분하여 처음 $FEV_1$값에 대한 의존도를 조사하였다. 결과: 가역 반응의 예민도 조사에서 전체적으로 Isovolume $FEF_{25\sim75%}$와 sGaw에서 58.0%, 60.0%로 가장 높았고 유량속도의 변화를 이용한 지표 중에서는 FVC가 54.0%로 가장 높았다. 중증군에서는 FVC, Isovolume $FEF_{25\sim75%}$, sGaw에서 61.5% 였고, 중등증군에서는 Isovolume $FEF_{25\sim75%}$와 sGaw에서 각각 56.3% 였으며 경증군에서는 $FEV_1$과 sGaw에서 62.5% 그리고 Isovolume $FEF_{25\sim75%}$와 FVC에서 50.0%였다. 처음 $FEV_1$값에 대한 의존도 조사에서는 처음 $FEV_1$값을 측정된 $FEV_1$값(L)로 나타낼 때 처음 $FEV_1$값과 absolute, % initial, % predicted, % possible 각각에서의 상관계수 r은 0.15, -0.22(p<0.05), 0.02, 0.24(p<0.05)였으며, 처음 $FEV_1$값을 $FEV_1$, % predicted로 나타낼 때 처음 $FEV_1$값과 absolute, % initial, % predicted, % possible 각각에서의 상관계수 r은 0.06, -0.28(p<0.05), 0.08, 0.39(p<0.05) 였다. 결론: 이상의 결과에서 폐쇄성 기도 질환에서 기관지 확장반응의 가역성을 나타내는 5가지 판정 지표들 중 처음 폐쇄정도와 관계없이 폐용적의 변화를 고려한 지표(Isovolume $FEF_{25\sim75%}$, sGaw)들에서 가역반응의 예민도가 높았으며, $FEV_1$으로 가역반응을 니타내는 4가지 지표중에서 처음 $FEV_1$값에 의존도가 가장 낯은 지표는 % predicted 였고, 처음 $FEV_1$값과 상관관계를 가지는 지표는 % initial과 % possible 이었다.

• Tuberculosis and Respiratory Diseases
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• 제58권5호
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• pp.507-514
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• 2005

연구배경 : COPD환자에서 질환의 중증도, 치료 반응정도, 급성악화등을 평가하는데 $FEV_1$과 PEFR이 중요한 측정지표로 사용되고 있다. 하지만 COPD환자에서 PEFR과 $FEV_1$의 일치성에 대해서는 잘 알려져 있지 않아 PEFR 측정이 중증도 분류 검사로 사용이 가능한지는 모르는 상태이다. 방 법 : 2003년 9월부터 2004년 8월까지 건국대학교 병원호흡기 내과 외래에서 진료받은 COPD환자 125명을 대상으로 $FEV_1$과 PEFR을 측정하여 그 결과를 통계, 분석하였다. 결 과 : $FEV_1$ 예측치의 평균은 $56.98{\pm}18.21$이었고 PEFR 예측치의 평균은 $70{\pm}27.60$로 PEFR 예측치가 $FEV_1$ 예측치보다 13%정도 높게 측정 되었다. 두 검사 사이에는 유의한 상관관계가 있었다. COPD환자들의 나이와 PEFR 과는 유의한 상관관계가 없었다. 주관적 증상인 호흡 곤란과 PEFR 과는 유의한 상관관계가 있었다. 결 론 : COPD 환자들에서 PEFR 을 이용한 중증도 분류시 $FEV_1$에 비해 경한 쪽으로 분류되는 성향이 있으므로 증상이 심한 경우 중증도 분류 해석에 주의를 요해야 하겠다. COPD 환자들에서 중증도 분류가 확정된 경우 추적 관찰은 PEFR 값으로 $FEV_1$을 대체하는 것이 가능할 것으로 생각된다.

• 한국보건간호학회지
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• 제28권1호
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• pp.22-31
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• 2014

Purpose: The purpose of this study was to examine the impact of body mass index (BMI) and waist circumference (WC) for pulmonary function in normal-weight and obese women. Methods: Data from women aged ${\geq}40$ years were obtained from the 2011 Korean National Health and Nutrition Examination Survey. Obesity was measured by BMI and WC and pulmonary function was measured by forced vital capacity (FVC), forced expiratory volume in 1 second ($FEV_1$), and a ratio between forced expiratory volume in 1 second ($FEV_1$/FVC). Multiple linear regression analysis was performed for assessment of the association between FVC, $FEV_1$, $FEV_1$/FVC and obesity variables. Results: BMI showed positive association with FVC, $FEV_1$, $FEV_1$/FVC, and WC showed positive association with $FEV_1$ and $FEV_1$/FVC in normal-weight women. BMI and WC showed negative association with FVC, $FEV_1$ in obese women. A 1 unit increase in BMI showed an association with a 25-mL reduction in FVC and a 19-mL reduction in $FEV_1$. A 1-cm increase in WC showed an association with a 6-mL reduction in FVC and a 4-mL reduction in $FEV_1$. Conclusions: BMI and WC showed negative association with pulmonary function in obese adult women. Therefore, obese women with reduced pulmonary function should be encouraged to lose weight for improvement of their pulmonary function.

• 대한통합의학회지
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• 제10권2호
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• pp.169-176
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• 2022

Purpose : The purpose of this study is to investigate the effect of squat, bracing and aerobic exercise on lung function, which is known to be effective for strength training, on lung function. Methods : The study was conducted with 33 students from Busan K university. Eleven students were assigned to squats, bracing, and aerobic exercise, six weeks three times a week. In order to measure lung activity, pony Fx manufactured the change amount of FVC (forced vital capacity), FEV₁ (Forced expiratory volume at one second), and FEV₁/FVC % (forced vital capacity/forced expiratory volume at one second) was analyzed after inputting the information of experimental group A and B controls. As a method of measurement, the difference between the three groups was analyzed using repeated ANOVA. Results : As a result of analyzing the effects of squat, bracing, and aerobic exercise for 6 weeks, all values of FVC, FEV₁, FEV₁/FVC % were increased from 0 weeks to 6 weeks except FEV₁/FVC %. There was no significant difference in FVC from week 3 to week 6. In the squat, bracing, and aerobic exercise, the changes in spirometry showed that the FVC, FEV₁, and FEV₁/FVC % values in bracing exercise were significantly increased with time than before exercise. As a result of analyzing the changes in the spirometry of squat, bracing, and aerobic exercise, the FVC, FEV₁, FEV₁/FVC % values in the squat exercise showed statistically significant difference according to the period, but the lowest increase among the three groups. Conclusion : In conclusion, aerobic, bracing and squat exercises all had a significant impact on improving lung function. Therefore, even without aerobic exercise, squat or bracing exercise alone can be expected to improve lung function.

• Clinical and Experimental Pediatrics
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• 제51권8호
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• pp.842-847
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• 2008

목 적 : 기도 폐쇄의 평가를 위해 측정하는 $FEV_1$은 대상 환자의 협조를 필요로 하기 때문에 6세 이전의 소아에서는 검사하기 어렵다. 이에 본 연구에서는 소아에서 IOS의 유용성을 검정하기 위해 IOS와 폐활량 측정법의 $FEV_1$을 비교하였다. 방 법 : 병력상 천식이 의심되어 폐활량 측정법과 IOS를 이용해서 폐기능 검사 및 메타콜린 기관지 유발 검사를 실시한 환자 174명을 대상으로 하였다. 대상군은 기관지 과민성 지표인 $PC_{20}$ 농도에 따라 두 군으로 나누었고, 이들의 기저 폐 기능, 기관지 유발검사 후의 변화율, $FEV_1$과 IOS 지표의 상관관계를 알아보았다. 결 과 : 기저 폐기능 지표 중 X5, R5는 $PC_{20}$ 양성군과 음성군간에 유의한 차이를 보였지만, $FEV_1$, $FEV_1$ % 예측치, $FEV_1_-Zs$은 유의한 차이가 없었다. $FEV_1$은 X5 (r=0.45, P<0.01), R5 (r=-0.69, P<0.01)와 상관관계를 보였고, $FEV_1_-Zs$ 역시 X5_Zs (r=-0.26, P<0.01), R5_Zs (r=-0.31, P<0.01)와 상관관계를 보였다. 메타콜린 유발검사 후 $FEV_1$과 X5의 변화율은 두 군간에 유의한 차이를 보였다(P<0.05). 결 론 : IOS 지표는 기저 폐 기능 검사에서 기관지 과민성으로 분류한 환자를 $FEV_1$보다 민감하게 구분 지을 수 있었고, IOS 지표와 $FEV_1$의 상관관계가 높았다.

• The Korean Journal of Physiology
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• 제11권2호
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• pp.45-50
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• 1977

The maximum voluntary ventilation (MVV) is one of the most widely used pulmonary function test, but its measuring method was very difficult and unreliable. However, it is need to get more easy and simple measuring method of MVV. Therefore, this study was attempted to get more easy and simple measuring method of MVV by means of the forced expiratory volume $(FEV_{T})$. The young and healthy 1,000 Korean students(592 male and 408 female) were cheesed for this purpose and whose ages were from 8 to 20 years. A spirometer (9L, Collins Co.) was used for the MVV and FEV, and they were measured 3 times at standing position, and the highest value was used. In the measurements, the subjects for MVV were asked for the breath as fast and deeply as possible for 12 seconds, and for FEV were asked for the rapid and forceful exhalation after a maximal inhalation (forced expiratory curve). In the FEV measurements toward the end of the expiration, the subjects were exhaused to continue the effort until no further gas was expired. During these measurements, the investigator stood by the subject to give a constant encouragement. FEV were calculated in the volume exhaled during the one-half $(FEV_{0{\cdot}5,}\;ml)$, the first second $(FEV_{1{\cdot}0,}\;ml)$ and the percentage of the total vital capacity exhaled during the one-half second $(FEV_{0{\cdot}5,}\;%)$. The results are summarized as follows: 1) The values of MVV were increased linearly with ages until 20 in both sexes. The values of male at the age of 20 was $168.2{\pm}2.5L/min$, and female at the age of 17 was $112.3{\pm}3.0L/min$, respectively. 2) The values of FEV (ml) were increased linearly with ages until 20 in both sexes. The values of $FEV_{0{\cdot}5}$ were $2,797{\pm}65.7ml$ in the male of 20 years and were $2,088{\pm}54.6ml$ in the female of 17 years, and of $FEV_{1{\cdot}0$ were $4,119{\pm}68.2ml$ in the male of 20 years and were $2,897{\pm}65.9ml$ in the female of 17 years, respectively. 3) The correlation coefficients between MVV and $FEV_{0{\cdot}5}\;or\;FEV_{1{\cdot}0$ (ml) were 0.82 or 0.85 in the male, and 0.77 or 0.79 in the female, respectively. 4) The prediction formulae for MVV to be derived from above results were: For male: MVV (L/min) =7.19+$0.05{\times}FEV_{0\cdot5}(ml)$, MVV (L/min)=11.25+$0.04{\times}FEV_{1\cdot0}(ml)$ For female: MVV (L/min)=16.03+$0.05{\times}FEV_{0\cdot5}(ml)$, MVV (L/min)=9.47+$0.03{\times}FEV_{1\cdot0}(ml)$.

• 기본간호학회지
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• 제19권1호
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• pp.16-22
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• 2012

Purpose: The purpose of this study was to identify Forced Vital Capacity (FVC), Forced Expiratory Volume in 1 Second ($FEV_1$), $FEV_1$/FVC according to obesity in young adult women. Method: Height, weight, body mass index (BMI), and percent body fat (PBF) were obtained by using bioelectrical impedance analysis. Neck circumference (NC), waist circumference (WC) and spirometric values (FVC, $FEV_1$, $FEV_1$/FVC) were obtained for 135 women college students who were healthy and non smokers. Results: Mean BMI and PBF were $21.8kg/m^2$ and 30.5%. Obesity prevalence according to BMI and PBF were respectively 13.3%, and 50.9%. Lean body mass (LBM) was positively correlated with FVC, $FEV_1$, and PBF was negatively correlated with FVC, $FEV_1$ and $FEV_1$/FVC. FVC and $FEV_1$ of the underweight or obese group were lower than those of normal weight group. Conclusion: PBF, but not BMI, is negatively associated with pulmonary function in women college students.

• 대한물리치료과학회지
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• 제23권1호
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• pp.1-8
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• 2016

Purpose : The purpose of this study was to investigate the response of pulmonary function and heart rate recovery of smoker and nonsmoker in males aged 20s after graded maximal exercise. Method : The subjects were composed of smoker group (n=12) and nonsmoker group (n=12) in males aged 20s. Each groups completed an graded maximal exercise with Bruce protocol and were assessed on the pulmonary function(forced vital capacity : FVC, forced expiratory volume-one second : FEV1, FEV1/FVC) and heart rate. Result : The results were as follows: First, heart rate in the measurement point was a statistically significant difference for smoker and non-smoker group after maximal exercise, but FVC, FEV1, FEV1/FVC was no difference. Second, FEV1/FVC between smoker and nonsmoker group was a statistically significant difference after maximal exercise, but FVC, FEV1, heart rate was no difference. Conclusion : The results of this study is that smoking is negative effects on FEV1/FVC of pulmonary function in males aged 20s after maximal exercise.