Correlation Between Physical Activity And Health-Related Physical Fitness Of The Elderly In The Plateau Environment

Objective: With the increasing aging of the population in China,healthy aging has become a public health issue that needs to be addressed urgently in the whole society.This article intends to study the correlation between physical activity and healthy physical fitness in elderly people at high altitude and the impact of different intensities of physical activity on healthy physical fitness at high altitude by measuring the level of physical activity and healthy physical fitness in elderly people at high altitude.Methods: Taking 60 to 79 elderly people in plateau areas as research subjects,health screening was conducted using Physical Activity Preparation Questionnaire(PAR-Q)and Pre Exercise Health Screening Questionnaire,and informed consent forms were signed.Using Acti Graph GT3X+(abbreviated as GT3X+)triaxial accelerometer,subjects were tested for physical activity for two consecutive days(including one working day and one weekend).Descriptive statistics,single sample T-test,analysis of variance,and Pearson correlation were used to statistically analyze the data of physical activity and fitness tests for elderly people at high altitude.Results:(1)The levels of sedentary behavior(SB)and moderate to high intensity physical activity(MVPA)in elderly people in plateau areas were lower than those in plain areas(P.In terms of gender,there was a significant difference in SB and LPA between elderly men and women(P<0.05);In terms of age,there was a significant difference in LPA between the ages of 60 to 64 and 75 to 79(P<0.01),and MVPA showed a downward trend with age.There was a significant difference in MVPA between weekdays and weekends in the activity time of elderly people in plateau areas(P<0.001);From the perspective of self-efficacy,weather factors and plateau environmental dimensions have the most significant impact on physical activity in the elderly(P<0.001).(2)The waist circumference,waist to hip ratio,sitting posture,forward flexion,and grip strength of elderly men aged 60 to 64 years in plateau areas were lower than the national average(P<0.05);The height,waist circumference,waist to hip ratio,sitting posture,forward flexion,grip strength,and 30 second sitting position of elderly men aged 65 to 69 years were lower than the national average(P<0.05);The grip strength of elderly men aged 70 to 74 years was lower than the national average(P<0.05);The height,weight,waist circumference,and sitting posture of elderly men aged 75 to 79 years were lower than the national average(P<0.05);The cardiopulmonary fitness at all ages was better than that of elderly men in plain areas(P<0.05).The body weight,BMI,waist circumference,and sitting posture of elderly women at all ages were significantly lower than the national average(P;Among them,the height and hip circumference of plateau elderly women aged 60 to 64,the waist to hip ratio and grip strength of elderly women aged 65 to 69,and the 30-second sitting and standing of elderly women aged 75 to 79 are lower than the national average(P<0.05).(3)There was a significant positive correlation between SB and waist circumference and waist to hip ratio in the elderly at high altitude,while there was a significant negative correlation between MVPA and body composition(P<0.05);The other dimensions were negatively correlated with SB and positively correlated with LPA and MVPA levels(P<0.05).(4)In terms of gender,SB was positively correlated with the waist to hip ratio of elderly men and women,while negatively correlated with cardiopulmonary fitness and muscle fitness of elderly women(P<0.05);LPA was negatively correlated with body composition in elderly men,but positively correlated with flexibility in elderly men and flexibility in elderly women,lower limb strength,and cardiopulmonary fitness(P<0.05);MVPA was negatively correlated with body composition in elderly men,positively correlated with lower limb muscle strength and cardiopulmonary fitness(P<0.05),negatively correlated with body composition in elderly women,and positively correlated to varying degrees with other dimensions(P<0.05).(5)In terms of age,SB was negatively correlated with waist to hip ratio,sitting posture and forward flexion in the elderly aged 60 to 64 years,negatively correlated with waist circumference,hip circumference,waist to hip ratio,30 second sitting and cardiopulmonary fitness in the elderly aged 65 to 69 years,negatively correlated with heart and lung fitness in the elderly aged 70 to 74 years,and negatively correlated with waist circumference and hip circumference in the elderly aged 75 to 79 years(P<0.05).LPA was negatively correlated with body weight,BMI,and hip circumference in the elderly aged 60 to 64 years,positively correlated with sitting forward flexion,30 second sitting,and cardiopulmonary fitness(P<0.05),negatively correlated with waist and hip circumference in the elderly aged 70 to 74 years,and positively correlated with sitting forward flexion(P<0.05);It was negatively correlated with body weight,BMI,waist circumference,hip circumference,and waist to hip ratio in the elderly aged 75 to 79years(P<0.05).MVPA was positively correlated with 30-second sitting and cardiopulmonary fitness in the elderly aged 60 to 64 years(P<0.05),negatively correlated with BMI,waist circumference,and hip circumference in the elderly aged65 to 69 years,positively correlated with grip strength,30-second sitting and cardiopulmonary fitness,negatively correlated with BMI in the elderly aged 70 to 74 years,and positively correlated with cardiopulmonary fitness(P<0.05);There was a positive correlation between lung fitness and heart function in the elderly aged 75 to79 years(P<0.05).Conclusion: There is a high correlation between physical activity and physical fitness in the elderly in plateau environments.The elderly in plateau areas should pay attention to multiple forms of physical activity,especially strength training,while improving high intensity physical activity.