객관적으로 측정된 좌식행동과 심혈관질환 위험요인의 비교

성호용 ( Hoyong Sung ),임정준 ( Jungjun Lim ),문준배 ( Junbae Mun ),김연수 ( Yeonsoo Kim ) 대한스포츠의학회 2020 대한스포츠의학회지 Vol.38 No.3

Purpose: The purpose of this study was to examine the relationship between sedentary behavior measured by accelerometer and cardiovascular disease risk factors from Korea National Health and Nutrition Examination Survey 2014-2015. Methods: The participants included in this study volunteered to wear accelerometer (n=1,407). Ordinal logistic regression was used to examine the relationship between sedentary time or sedentary breaks and cardiovascular disease risk factors. Odds ratios and 95% confidence intervals were calculated for the relationship. Covariates were sex, age, educational status, alcohol, smoking, socioeconomic status, body mass index, calorie intake, physical activity, and accelerometer wear time. Results: The group with the most sedentary time had significantly greater odds of having dyslipidemia (odds ratio, 2.47; 95% confidence interval, 1.54-3.94) compared to the least. There were no other significant relationships between sedentary behavior (sedentary time, sedentary break) and risk factors. Conclusion: The only significant relationship found in this study was that between sedentary time and dyslipidemia.

군인 근골격계 부상 예방운동의 체계적 문헌고찰 및 메타 분석

성호용 ( Hoyong Sung ),김건희 ( Geon Hui Kim ),이온 ( On Lee ),김재우 ( Jaewoo Kim ),김경배 ( Kyoung Bae Kim ),문효열 ( Hyo Youl Moon ),김연수 ( Yeon Soo Kim ) 대한스포츠의학회 2024 대한스포츠의학회지 Vol.42 No.1

Purpose: This study aimed to conduct a systematic literature review and meta-analysis of the exercise intervention effects for the prevention of musculoskeletal injuries in military personnel. Methods: Among studies that included military personnel as participants, we identified randomized controlled trials (RCTs) and cluster-RCT studies that used exercise interventions as a method for injury prevention. Exercise encompassed all types of physical activity, and the effect size was determined by the ratio of injuries between groups. Literature searches were conducted with search terms modified to ensure common inclusion of keywords such as “Soldier,” “Injury prevention,” and “Exercise.” For the analysis of potential factors, variables selected for group differentiation included gender, risk of bias, exercise volume, injury location, exercise type, and study design. Results: Among a total of 8,598 search results, 10 papers were finally confirmed. The meta-analysis of all 10 papers showed that there was no statistically significant injury prevention effect, and significant heterogeneity was observed among the studies (incidence rate ratio, 0.82; 95% confidence interval, 0.62-1.09, I2=83%). Subgroup analysis revealed a significant 44% reduction in injuries in studies where exercise volume for injury prevention was relatively high. However, no significant injury prevention effects were observed in other potential factors between groups. Conclusion: The results of this study suggest that the effectiveness of injury prevention exercises in military settings was not statistically significant. However, through the analysis of potential factors, it was confirmed that increasing the time spent on injury prevention exercises may have a preventive effect on injuries.

한국 노인의 근력운동 빈도 및 유산소 신체활동 수준과 건강 관련 삶의 질과의 연관성: 2018년 국민건강영양조사 자료 분석

손남국 ( Namkuk Son ),성호용 ( Hoyong Sung ),김연수 ( Yeonsoo Kim ) 대한스포츠의학회 2021 대한스포츠의학회지 Vol.39 No.1

Purpose: The purpose of this study was to identify the association between resistance exercise frequency, aerobic physical activity level, and health-related quality of life in Korean older adults from the seventh Korea National Health and Nutrition Examination Survey, 2018. Methods: Complex samples logistic regression was used to examine the relationship between resistance exercise frequency, aerobic physical activity level, and health-related quality of life in Korean older adults. Odds ratio, covariate-adjusted odds ratio, and 95% confidence interval were calculated for the relationship. Covariates were age, sex, educational status, alcohol drinking, smoking, household income status, and body mass index. Results: In all variables related to resistance exercise frequency and aerobic physical activity level, the group performing below the recommended level was significantly higher in odds ratio and covariate-adjusted odds ratio on EuroQol-5 Dimension index score of less than 1 (having problems with health-related quality of life) than the group performing above the recommended level. Conclusion: The results of this study showed that performing above the recommended level of resistance exercise frequency and aerobic physical activity is associated with improved health-related quality of life in Korean older adults.

가속도계로 측정된 한국 성인의 신체활동 : 제6기 국민건강영양조사 가속도계 자료 분석

임정준 ( Jungjun Lim ),성호용 ( Hoyong Sung ),이온 ( On Lee ),김연수 ( Yeonsoo Kim ) 한국스포츠정책과학원(구 한국스포츠개발원) 2020 체육과학연구 Vol.31 No.2

[목적] 본 연구의 목적은 가속도계로 측정된 중-고강도 신체활동 및 좌식행동을 분석하고, 동일인의 자기보고식 설문 결과로 나타난 신체활동 수준과 지침 충족률을 비교하는 데 있다. [방법] 2014-2015 국민건강 영양조사의 참가자 중 가속도계 착용에 동의한 1,417명의 하루 평균 좌식시간 및 중-고강도 신체활동 시간, 그리고 신체활동 지침 충족률을 연령과 성별에 따라 분석하였다. 또한, 자기 보고식 설문지와의 연관성을 확인하기 위해, 동일인의 신체활동 설문의 결과를 산출하여 Chi-square test 및 상관분석을 실시하였다. [결과] 첫째, 1분 이상 모든 신체활동을 포함한 가속도계(accelerometer-total AT)의 하루 평균 중-고강도 신체활동은 남성 40.6분 여성 31.1이었으며, 좌식시간은 남성 502.9분 여성 498.9분이었다. 지속된 10분 이상가속도계(accelerometer-bout AB)의 중-고강도 신체활동의 경우 남성 16.4분 여성 14.2분으로 나타났다. 반면 설문의 중-고강도 신체활동은 남성 95.8분 여성 64.3분, 좌식시간은 남성 471.2분 여성 455.2분으로 나타났다. 둘째, 신체활동 지침 충족률은 설문지 55.6%, AT 56.1%, AB 21.4%로 나타났다. 셋째, 신체활동 강도에 따른 설문지와 가속도계의 상관계수는 모두 통계적으로 유의하였으나(p < 0.01), 약한 상관도를 보였다(rho = 0.112-0.351). 넷째, AB와 설문지의 신체활동 지침 충족률의 연관성은 없었으며(p < 0.01), 설문지의 민감도 71.3%, 특이도 48.6%, 양성예측도 27.5%, 음성예측도 86.1%였으며 정확도는 53.4%로 나타났다. [결론] 본 연구의 결과 설문은 가속도계에 비해 많은 신체활동 시간과 적은 좌식시간을 보고하였다. 또한, 설문과 가속도계의 신체활동 지침 충족률은 상이하였으며, AB 결과를 비교할 경우 그 차이가 크게 증가하였다. 그러므로 두 측정 도구를 상호 보완하여 사용할 수 있는 구체적인 방법에 관한 추가 연구가 필요할 것이다. 따라서 설문지와 가속도계의 신체활동 결과를 해석할 때는 큰 주의를 기울여야 하며, 서로 다른 두 측정 도구를 상호 보완하여 사용할 수 있는 구체적인 방법에 관한 추가 연구가 필요할 것이다. [Purpose] The purpose of this study was to evaluate the moderate to vigorous physical activity(MVPA) and sedentary time measured by accelerometer. Furthermore, the level of physical activity and adherence rate of physical activity guideline(PAG) were compared with the self-reported questionnaire. [Methods] The MVPA, sedentary time, and adherence rate of PAG according to age and sex were examined to people who agreed to wear accelerometers among the participants of the 2014-2015 Korea National Health and Nutrition Examination Survey. To compare the relationship between accelerometer and self-reported questionnaire, Chi-squared test and Spearman correlation analysis were performed. [Results] The MVPA of the accelerometer-total(AT) was 40.6 minutes/day for men and 31.1 minutes/day for women. Sedentary time was 502.9 minutes/day for men and 498.9 minutes/day for women. The MVPA of accelerometer-bout(AB) estimates was 16.4 minutes/day for men and 14.2 minutes for women. On the other hand, the MVPA of the self-report was 95.8 minutes for men and 64.3 minutes for women, and the sedentary time was 471.2 minutes for men and 455.2 minutes for women. The adherence rate of PAG was 55.6% of the self-report, 56.1% of the AT, and 21.4% of the AB. The correlation between self-report and accelerometer was statistically significant(p < 0.01), but showed a weak correlation coefficient(rho=0.112-0.351). There was no association between AB and self-report(p < 0.01). The sensitivity and specificity of the self-report were 71.3% and 48.6%, respectively. The positive and negative predictive values of the self-report were 27.5% and 86.1%, respectively. [Conclusions] As a result of this study, self-reported physical activity level by questionnaire had more MVPA and less sedentary time than the accelerometer-determined physical activity. In addition, the adherence rate of the PAG differed from accelerometer and self-report. The difference was significantly increased when comparing AB with the self-report. Therefore, great care must be taken when interpreting accelerometer and self-report questionnaire. Further research will be needed on specific methods that can be used by complementing the two measurement tools.

좌식시간 및 신체활동 수준과 노인 비만과의 연관성

손남국 ( Namkuk Son ),성호용 ( Hoyong Sung ),김연수 ( Yeonsoo Kim ) 대한스포츠의학회 2021 대한스포츠의학회지 Vol.39 No.2

Purpose: The purpose of this study was to examine the association between the levels of sedentary time, physical activity, and obesity in Korean older adults. Methods: A cross-sectional analysis was performed on 1,396 Korean older adults aged 65 to 80 years from the Korea National Health and Nutrition Examination Survey 2018. Complex samples logistic regression was used to examine the relationship between the levels of sedentary time, physical activity, and obesity. Results: The high sedentary group (≥8 hours/day) had significantly greater odds of having obesity than the low sedentary group (<8 hours/day). But there was no statistically significant difference in odds of having obesity between the high active group (≥600 metabolic equivalent of task [MET]-minute/week) and the low active group (<600 MET-minute/week). The high sedentary/low active group had significantly greater odds of having obesity than the low sedentary/high active group and the low sedentary/low active group. But there was no statistically significant difference in odds of having obesity compared to the high sedentary/high active group. Conclusion: Higher sedentary time (≥8 hours/day) was associated with a higher risk of having obesity, independent of meeting higher physical activity level (≥600 MET-minute/week) in Korean older adults.

한국 성인의 신체활동 형태와 정신건강과의 연관성: 2014-2018년도 국민건강영양조사자료

김학균 ( Hak Kyun Kim ),김연수 ( Yeon Soo Kim ),성호용 ( Hoyong Sung ),임정준 ( Jungjoon Lim ),김준식 ( Joonsik Kim ),최하림 ( Harim Choi ) 대한스포츠의학회 2021 대한스포츠의학회지 Vol.39 No.4

Purpose: The purpose of this study was to examine the associations of aerobic physical activity and musclestrengthening exercise with mental health, respectively. Furthermore, the relationship between combined exercise with depression, stress, and suicidal thoughts was also examined. Methods: The association between adherence to physical activity guidelines and mental health was analyzed among 27,268 adults who participated in the 2014- 2018 Korea National Health and Nutrition Examination Survey. Logistic regression was used to predict the relationship between adherence to physical activity guidelines and mental health. Results: The odds ratio for depression and suicidal thoughts in groups that met both aerobic physical activity and muscle-strengthening exercise guidelines decreased by 27% (95% confidence interval [CI], 0.56- 0.94) and 40% (95% CI, 0.39- 0.93), respectively, compared to those that did not meet both. Stress awareness decreased by 22% (95% CI, 0.67- 0.90) in those who met muscular exercise guidelines, but did not meet aerobic physical activity guidelines. For those who met only the aerobic physical activity guidelines, stress awareness decreased by 12% (95% CI, 0.82- 0.95). In addition, the odds ratio decreased by 29% (95% CI, 0.62- 0.80) in groups that met both guidelines. Conclusion: The most positive relationships between adherence to physical activity guidelines and mental health were found when both aerobic and muscular exercise guidelines were met.