Comparison of Isokinetic Knee Strength Profiles According to History of Knee Surgery in Korean Women’s Professional Basketball Players / 대한스포츠의학회지

Purpose@#This study compared isokinetic knee strength profiles by knee surgery history in basketball players. @*Methods@#A total of 17 professional female basketball players (age, 23.7±3.8 years) participated in this study. All the participants performed maximal isokinetic knee strength test concentrically at a velocity of 60°• sec −1 and 180°• sec −1 . Strength variables included peak torque (PT), body mass normalized PT (NPT), bilateral strength difference (BD), hamstrings to quadriceps strength (H/Q) ratio. Independent t-test and one-way analysis of variance were used to compare mean differences in the measured parameters by knee surgery history and limb-based sugroups, respectively. @*Results@#Nine subjects had a history of knee surgery. At all velocities, there were no significant group differences in PTs, NPTs, BDs, and H/Q ratios of the knee extensor and flexor muscles by knee surgery history. Overall, NPTs of knee extensor and flexor muscles were 2.91−3.01 N• m• kg −1 and 1.55−1.59 N• m• kg−1 , respectively, and H/Q ratios ranged from 52% to 55%. At 180°• sec −1 . NPTs of knee extensor and flexor muscles were 1.90−1.92 N• m• kg −1 and 1.08−1.10 N• m• kg −1 , respectively, and H/Q ratios ranged from 57% to 58%. @*Conclusion@#The current findings suggested that isokinetic knee strength profiles measured at 60°• sec −1 and 180°• sec −1 velocities were similar regardless of a history of knee surgery in the professional female basketball players.

Association of Cardiovascular Disease Risk and Physical Fitness with Cognitive Impairment in Korean Elderly Women / 대한스포츠의학회지

Purpose@#This study aimed to investigate the effect of cardiovascular disease (CVD) risk and physical fitness on cognitive impairment in Korean elderly women. @*Methods@#In a cross-sectional design, a total of 308 Korean elderly women, aged 60 years or older, participated in this study. Measured parameters included the 10-year Framingham risk score (FRS), physical fitness (i.e., upper and lower body strength and flexibility and endurance), and cognitive performance based on Mini-Mental State Examination for dementia screening. The participants were classified as low (＜ 10%) or intermediate and high (≥ 10%) risk groups based on the 10-year FRS and as unfit (lower 50%) or fit (higher 50%) on a composite z-score of physical fitness. Logistic regression was used to estimate the odd ratios (ORs) and confidence intervals (CIs) of cognitive impairment according to the 10-year FRS and physical fitness-based classification. @*Results@#The low FRS/unfit and intermediate or high FRS/unfit groups had significantly higher risks of cognitive impairment (OR, 3.714; 95% CI, 1.324– 10.418; p=0.013 and OR, 11.345; 95% CI, 4.810– 26.762; p＜ 0.001, respectively) compared with the low FRS/fit group (OR, 1). In particular, the elevated risk of cognitive impairment remained significant (OR, 3.876; 95% CI, 1.400– 10.726; p=0.009) even after adjustments for covariates such as age, body mass index, education, and physical inactivity. @*Conclusion@#The current findings suggest that an intervention targeting at both CVD risk reduction and physical fitness promotion is urgent as a preventive and/or therapeutic measure against declines in cognitive function in Korean elderly women.

Association of Cardiovascular Disease Risk and Physical Fitness with Cognitive Impairment in Korean Elderly Women / 대한스포츠의학회지

Purpose@#This study aimed to investigate the effect of cardiovascular disease (CVD) risk and physical fitness on cognitive impairment in Korean elderly women. @*Methods@#In a cross-sectional design, a total of 308 Korean elderly women, aged 60 years or older, participated in this study. Measured parameters included the 10-year Framingham risk score (FRS), physical fitness (i.e., upper and lower body strength and flexibility and endurance), and cognitive performance based on Mini-Mental State Examination for dementia screening. The participants were classified as low (＜ 10%) or intermediate and high (≥ 10%) risk groups based on the 10-year FRS and as unfit (lower 50%) or fit (higher 50%) on a composite z-score of physical fitness. Logistic regression was used to estimate the odd ratios (ORs) and confidence intervals (CIs) of cognitive impairment according to the 10-year FRS and physical fitness-based classification. @*Results@#The low FRS/unfit and intermediate or high FRS/unfit groups had significantly higher risks of cognitive impairment (OR, 3.714; 95% CI, 1.324– 10.418; p=0.013 and OR, 11.345; 95% CI, 4.810– 26.762; p＜ 0.001, respectively) compared with the low FRS/fit group (OR, 1). In particular, the elevated risk of cognitive impairment remained significant (OR, 3.876; 95% CI, 1.400– 10.726; p=0.009) even after adjustments for covariates such as age, body mass index, education, and physical inactivity. @*Conclusion@#The current findings suggest that an intervention targeting at both CVD risk reduction and physical fitness promotion is urgent as a preventive and/or therapeutic measure against declines in cognitive function in Korean elderly women.

Response: Association of Physical Activity and Body Fatness with Vitamin D Deficiency in Older Adults (Korean J Obes 2016;25:24-30)

No abstract available.

Association of Physical Activity and Body Fatness with Vitamin D Deficiency in Older Adults

BACKGROUND: This study investigated the association between physical activity and body fatness with serum vitamin D level in older adults. METHODS: A total of 233 older adults (39 men and 194 women) aged older than 65 years were voluntarily recruited from a local community. Physical activity was monitored using a uniaxial accelerometer. Body fatness was measured using a standardized protocol. Subjects were classified as sufficient (>30 ng/mL), insufficient (20-29 ng/mL), or deficient (<20 ng/mL) based on serum vitamin D level. Pearson correlation analyses were used to calculate bivariate correlations between variables. Logistic regression was used to determine the odds ratio of serum vitamin D inadequacy. RESULTS: There were linear increases in physical activity parameters including daily steps (P<0.001), low-intensity physical activity (P<0.001), moderate-intensity physical activity (P<0.001), and high-intensity physical activity (P<0.001) and linear decreases in body fatness parameters such as body mass index (P=0.039) and waist circumference (P=0.020) across incremental vitamin D levels. Vitamin D level was positively associated with daily steps (P<0.001), low-intensity physical activity (P<0.001), moderate-intensity physical activity (P<0.001), and high-intensity physical activity (P<0.001) and negatively associated with body mass index (P=0.001), percentage body fat (P=0.005), and waist circumference (P=0.003). Compared to the active group (reference), the inactive group (P=0.001) had a significantly higher odd ratio for serum vitamin D deficiency even after adjusting for age and sex (P=0.002). CONCLUSION: The findings of this study suggest that physical activity and vitamin D supplementation should be promoted for healthy aging.