Affective valence is typically positive at exercise intensities below the lactate threshold,yet more aversive responses occur at supra-threshold intensities.Nevertheless,the physiological and psychological predictors ...Affective valence is typically positive at exercise intensities below the lactate threshold,yet more aversive responses occur at supra-threshold intensities.Nevertheless,the physiological and psychological predictors of affective valence during supramaximal intensities including short sprint interval training(sSIT)have not yet been elucidated.Seventeen(7 women/10 men)moderately active young adults(age=[28.2±5.6]years;VO2max[maximum oxygen consumption]=[52.9±8.1]mL·kg^(-1)·min^(-1);BMI[body mass index]=[242]kg·m^(-2))completed four low-volume running sSIT sessions(10^(-4)s efforts with 30 s of passive recovery).We recorded participants’heart rate(HR),root mean square of successive differences of normal RR intervals(RMSSD),heart rate recovery(HRR),ratings of perceived exertion(RPE),feeling scale(FS),intention and self-efficacy during,and after each session.Overall,no significant correlation(p>0.05)was found between FS and baseline clinical outcomes.No significant correlation(p>0.05)was detected between FS and any training parameter.No significant correlations were noted between FS and exercise task self-efficacy and intentions(p>0.05).The regression model was significant(F_(3,61)=5.57;p=0.002)and only three variables significantly entered the generated model:ΔHRR_(end-120s end)(p=0.002;VIF=2.58;40.8%),time≥90%HR_(peak)(p=0.001;VIF=1.26;31.6%),and RMSSD_(end)(p=0.025;VIF=2.23;27.6%).These findings suggest that HR-based measures,particularly those related to in-task stress(time≥90%HR_(peak))and acute recovery(ΔHRR_(end-120s end),and RMSSD_(end)),may predict affective valence during real-world sSIT.展开更多
科研是促进医学发展和人类健康的基础。业界称为《SPRINT研究》的重要科研成果是由SPRINT研究组在102个临床研究中心历经平均3.26年的药物干预和随访监测后分析得出的。该研究成果的问世在高血压领域甚至心血管研究领域引起了不断的争...科研是促进医学发展和人类健康的基础。业界称为《SPRINT研究》的重要科研成果是由SPRINT研究组在102个临床研究中心历经平均3.26年的药物干预和随访监测后分析得出的。该研究成果的问世在高血压领域甚至心血管研究领域引起了不断的争议。争议的焦点主要集中在对于高血压患者是否应该通过强化降压将降压目标控制在120 mm Hg以下以及该研究成果对于未来高血压防治指南制定的参考意义。所有的争议都源于不同人对SPRINT研究的理解不同。我们从研究人群、研究结果和实际问题三方面对其内容进行了客观、深入的解读。展开更多
基金founded by Proyectos I+D,Comision Sectorial de Investigacion Científica,Universidad de la República,Uruguay 2018,grant number 192supported by Grant RYC2021-031098-I funded by MCIN/AEI/10.13039/501100011033,by“European Union Next Generation EU/PRTR”by a productivity research grant PQ1-D(317126/2021-0)by CNPq(Brazil).
文摘Affective valence is typically positive at exercise intensities below the lactate threshold,yet more aversive responses occur at supra-threshold intensities.Nevertheless,the physiological and psychological predictors of affective valence during supramaximal intensities including short sprint interval training(sSIT)have not yet been elucidated.Seventeen(7 women/10 men)moderately active young adults(age=[28.2±5.6]years;VO2max[maximum oxygen consumption]=[52.9±8.1]mL·kg^(-1)·min^(-1);BMI[body mass index]=[242]kg·m^(-2))completed four low-volume running sSIT sessions(10^(-4)s efforts with 30 s of passive recovery).We recorded participants’heart rate(HR),root mean square of successive differences of normal RR intervals(RMSSD),heart rate recovery(HRR),ratings of perceived exertion(RPE),feeling scale(FS),intention and self-efficacy during,and after each session.Overall,no significant correlation(p>0.05)was found between FS and baseline clinical outcomes.No significant correlation(p>0.05)was detected between FS and any training parameter.No significant correlations were noted between FS and exercise task self-efficacy and intentions(p>0.05).The regression model was significant(F_(3,61)=5.57;p=0.002)and only three variables significantly entered the generated model:ΔHRR_(end-120s end)(p=0.002;VIF=2.58;40.8%),time≥90%HR_(peak)(p=0.001;VIF=1.26;31.6%),and RMSSD_(end)(p=0.025;VIF=2.23;27.6%).These findings suggest that HR-based measures,particularly those related to in-task stress(time≥90%HR_(peak))and acute recovery(ΔHRR_(end-120s end),and RMSSD_(end)),may predict affective valence during real-world sSIT.
文摘科研是促进医学发展和人类健康的基础。业界称为《SPRINT研究》的重要科研成果是由SPRINT研究组在102个临床研究中心历经平均3.26年的药物干预和随访监测后分析得出的。该研究成果的问世在高血压领域甚至心血管研究领域引起了不断的争议。争议的焦点主要集中在对于高血压患者是否应该通过强化降压将降压目标控制在120 mm Hg以下以及该研究成果对于未来高血压防治指南制定的参考意义。所有的争议都源于不同人对SPRINT研究的理解不同。我们从研究人群、研究结果和实际问题三方面对其内容进行了客观、深入的解读。
