Prediction of upper extremity peak oxygen consumption from heart rate during submaximal arm cycling in young and middle-aged adults

2019 ◽  
Vol 119 (11-12) ◽  
pp. 2589-2598
Author(s):  
Jan Helgerud ◽  
Britt Elin Øiestad ◽  
Eivind Wang ◽  
Jan Hoff
Keyword(s):  
Heart Rate ◽  
Oxygen Consumption ◽  
Upper Extremity ◽  
Peak Oxygen Consumption ◽  
Middle Aged ◽  
Arm Cycling ◽  
Middle Aged Adults

Two Months of Using Global Recommendations for Physical Activity Had No Impact on Cognitive or Motor Functions in Overweight and Obese Middle-Aged Women

2020 ◽  
pp. 1-9
Author(s):  
Laura Zlibinaite ◽  
Albertas Skurvydas ◽  
Sandra Kilikeviciene ◽  
Rima Solianik
Keyword(s):  
Physical Activity ◽  
Heart Rate ◽  
Heart Rate Variability ◽  
Oxygen Consumption ◽  
Aerobic Exercise ◽  
Motor Performance ◽  
Peak Oxygen Consumption ◽  
Moderate Intensity ◽  
Middle Aged ◽  
Neurotropic Factor

Background: The effect of globally recommended levels of physical activity on cognition and motor behavior is not completely understood. Therefore, the main aim of this study was to assess the effect of 300 minutes per week of moderate-intensity aerobic exercise on cognitive and motor performance among overweight and obese working-age women. Methods: Overweight and obese participants aged 38–56 years were randomized to either a control or an experimental group performing aerobic exercise at 50% to 60% of the peak oxygen consumption for a 2-month period. Changes in aerobic fitness, cardiac autonomic function, brain-derived neurotropic factor levels, and cognitive and motor performance were assessed. Results: Although aerobic exercise reduced body weight (P < .05) and improved peak oxygen consumption (P < .05), the brain-derived neurotropic factor levels and cognitive and motor performance remained unchanged. Heart rate and blood pressure decreased (P < .05), whereas heart rate variability indices were not affected. No significant correlations between changes in heart rate variability indices and cognition were observed. Conclusions: Two months of moderate-intensity aerobic exercise decreased sympathetic activity and improved cardiovascular fitness but had no impact on cognition or motor control among these middle-aged, overweight, and obese women.

scholarly journals Middle-aged endurance athletes exhibit lower cerebrovascular impedance than sedentary peers

2020 ◽  
Vol 129 (2) ◽  
pp. 335-342
Author(s):  
Jun Sugawara ◽  
Tsubasa Tomoto ◽  
Justin Repshas ◽  
Rong Zhang ◽  
Takashi Tarumi
Keyword(s):  
Heart Rate ◽  
Endurance Training ◽  
Brain Perfusion ◽  
Endurance Athletes ◽  
Middle Aged ◽  
Harmonic Oscillations ◽  
Middle Aged Adults

Impedance modulus in the range of first harmonic oscillations (0.78–1.56 Hz), which reflects heart rate at rest, was lower in middle-aged endurance athletes than in age-matched sedentary peers and was similar to young individuals. Prolonged endurance training is associated with the improved cerebrovascular dampening function in middle-aged adults. Lower cerebrovascular impedance modulus may contribute to maintaining brain perfusion in midlife.

scholarly journals High-intensity interval training in people with Parkinson’s disease: a randomized, controlled feasibility trial

2018 ◽  
Vol 33 (3) ◽  
pp. 428-438 ◽  
Author(s):  
Marguerite Harvey ◽  
Kathryn L Weston ◽  
William K Gray ◽  
Ailish O’Callaghan ◽  
Lloyd L Oates ◽  
...  
Keyword(s):  
Parkinson’S Disease ◽  
Heart Rate ◽  
Parkinson's Disease ◽  
Oxygen Consumption ◽  
High Intensity ◽  
Peak Oxygen Consumption ◽  
Feasibility Trial ◽  
Maximal Heart Rate ◽  
Randomized Controlled ◽  
High Intensity Interval

Objectives: To investigate whether people with Parkinson’s disease can exercise at a high-intensity across a 12-week intervention and to assess the impact of the intervention on cardiorespiratory fitness. Design: This is a randomized, controlled, feasibility study with waiting list control. Assessors were blinded to group allocation. Setting: The intervention took place at an exercise centre and assessments at a district general hospital. Subjects: This study included 20 people with idiopathic Parkinson’s disease. Intervention: A total of 36 exercise sessions over 12 weeks, with each session lasting ~45 minutes, were conducted. Main measures: The main measures were maximal heart rates achieved during exercise, recruitment rate, attendance, drop-out, change in peak oxygen consumption, cardiac output, cognitive function and quality of life. The study was considered technically feasible if participants achieved ⩾85% of maximal heart rate during exercise. Results: There were 12 male and 8 female participants; they had a mean age of 68.5 years (standard deviation 6.825). Two participants were of Hoehn and Yahr stage I, 11 stage II and 7 stage III. In all, 17 participants completed the intervention. The median (interquartile range) proportion of repetitions delivered across the intervention which met our high-intensity criterion was 80% (67% to 84%). Mean peak heart rate was 88.8% of maximal. Peak oxygen consumption increased by 2.8 mL kg−1 min−1 in the intervention group and 1.5 mL kg−1 min−1 in the control group after 12 weeks of exercise. We estimate that a fully powered randomized controlled trial would require 30 participants per group. Conclusion: High-intensity interval exercise is feasible in people with Parkinson’s disease. Improvements in cardiorespiratory function are promising.

Correlates of Heart Rate Recovery in Healthy Young- to Middle-Aged Adults

2007 ◽  
Vol 39 (Supplement) ◽  
pp. S239-S240
Author(s):  
Mercedes Carnethon ◽  
Barbara Sternfeld ◽  
Kiang Liu ◽  
David R. Jacobs ◽  
Pamela J. Schreiner ◽  
...  
Keyword(s):  
Heart Rate ◽  
Heart Rate Recovery ◽  
Middle Aged ◽  
Middle Aged Adults

Poor Heart Rate Recovery Is Associated With the Development of New-Onset Atrial Fibrillation in Middle-Aged Adults

2016 ◽  
Vol 91 (12) ◽  
pp. 1769-1777 ◽  
Author(s):  
Avi Sabbag ◽  
Anat Berkovitch ◽  
Yechezkel Sidi ◽  
Shaye Kivity ◽  
Sagit Ben Zekry ◽  
...  
Keyword(s):  
Atrial Fibrillation ◽  
Heart Rate ◽  
Heart Rate Recovery ◽  
Middle Aged ◽  
Middle Aged Adults ◽  
Onset Atrial Fibrillation ◽  
New Onset

scholarly journals Fourteen days of bed rest induces a decline in satellite cell content and robust atrophy of skeletal muscle fibers in middle-aged adults

2016 ◽  
Vol 120 (8) ◽  
pp. 965-975 ◽  
Author(s):  
Emily J. Arentson-Lantz ◽  
Kirk L. English ◽  
Douglas Paddon-Jones ◽  
Christopher S. Fry
Keyword(s):  
Skeletal Muscle ◽  
Satellite Cell ◽  
Bed Rest ◽  
Capillary Density ◽  
Peak Oxygen Consumption ◽  
Fiber Types ◽  
Middle Aged ◽  
Cell Content ◽  
Middle Aged Adults ◽  
Change In Mean

Bed rest, a ground-based spaceflight analog, induces robust atrophy of skeletal muscle, an effect that is exacerbated with increasing age. We examined the effect of 14 days of bed rest on skeletal muscle satellite cell content and fiber type atrophy in middle-aged adults, an understudied age demographic with few overt signs of muscle aging that is representative of astronauts who perform long-duration spaceflight. Muscle biopsies were obtained from the vastus lateralis of healthy middle-aged adults [ n = 7 (4 male, 3 female); age: 51 ± 1 yr] before (Pre-BR) and after (Post-BR) 14 days of bed rest. Immunohistochemical analyses were used to quantify myosin heavy chain (MyHC) isoform expression, cross-sectional area (CSA), satellite cell and myonuclear content, and capillary density. Peak oxygen consumption, knee extensor strength, and body composition were also measured Pre-BR and Post-BR. Post-BR MyHC type 2a fiber percentage was reduced, and mean CSA decreased in all fiber types (−24 ± 5%; P < 0.05). Satellite cell content was also reduced Post-BR (−39 ± 9%; P < 0.05), and the change in satellite cell content was significantly correlated with the change in mean fiber CSA ( r2 = 0.60; P < 0.05). A decline in capillary density was observed Post-BR (−23 ± 6%; P < 0.05), and Post-BR capillary content was significantly associated with Post-BR peak aerobic capacity ( r2 = 0.59; P < 0.05). A subtle decline in myonuclear content occurred during bed rest (−5 ± 1%; P < 0.05). The rapid maladaptation of skeletal muscle to 14 days of mechanical unloading in middle-aged adults emphasizes the need for robust countermeasures to preserve muscle function in astronauts.

scholarly journals Heart rate variability in middle-aged adults

Medicine ◽  
2019 ◽  
Vol 98 (44) ◽  
pp. e17764
Author(s):  
Hyunjoo Oh ◽  
Seungwon Shin ◽  
Byung-Hee Koh ◽  
Minwoo Hwang
Keyword(s):  
Heart Rate ◽  
Heart Rate Variability ◽  
Middle Aged ◽  
Middle Aged Adults

Sumatriptan reduces exercise capacity in healthy males: a peripheral effect of 5-hydroxytryptamine agonism?

2000 ◽  
Vol 98 (6) ◽  
pp. 643-648 ◽  
Author(s):  
Gerald P. MCCANN ◽  
Helen CAHILL ◽  
Stephen KNIPE ◽  
Douglas F. MUIR ◽  
Paul D. MACINTYRE ◽  
...  
Keyword(s):  
Heart Rate ◽  
Oxygen Consumption ◽  
Exercise Capacity ◽  
Gas Analysis ◽  
Peak Oxygen Consumption ◽  
Peak Exercise ◽  
Double Blind ◽  
Peripheral Effect ◽  
Expired Gas Analysis ◽  
Exercise Induced

5-Hydroxytryptamine (5-HT; serotonin) has been implicated in the perception of exercise-induced fatigue. Sumatriptan is a selective 5-HT1B/D receptor agonist which does not cross the blood–brain barrier. The aim of the present study was to determine the effect of sumatriptan on exercise capacity. Ten healthy male subjects (mean age 28.4±10.8 years) performed a maximal treadmill exercise test according to the Bruce protocol with expired gas analysis on two occasions. Either 6 mg of sumatriptan or placebo was administered subcutaneously in a randomized, double-blind, placebo-controlled, cross-over design. Exercise time was greater after placebo compared with sumatriptan [914 and 879 s respectively; 95% confidence interval (CI) of difference 12.1 s, 59.1 s; P = 0.008]. There was no significant effect on peak oxygen consumption (placebo, 50.6±6.3 ml·min-1·kg-1; sumatriptan, 51.7±7.6 ml·min-1·kg-1). Sumatriptan administration resulted in decreases in both heart rate (sumatriptan, 188±14 beats/min, placebo, 196±12 beats/min; 95% CI of difference 12.6, 2.6; P = 0.008) and respiratory exchange ratio (sumatriptan, 1.23±0.06; placebo, 1.26±0.07; 95% CI of difference 0.05, 0.01; P = 0.01) at peak exercise. There were no significant differences in blood pressure, heart rate or submaximal oxygen consumption between sumatriptan and placebo treatments at any stage of exercise. Thus sumatriptan reduces maximal exercise capacity in normal males. The failure to demonstrate any haemodynamic or cardiorespiratory effect suggests that sumatriptan enhances perception of fatigue by a peripheral mechanism affecting 5-HT modulation.

scholarly journals Acute Effects of Tai Chi Training on Cognitive and Cardiovascular Responses in Late Middle-Aged Adults: A Pilot Study

2018 ◽  
Vol 2018 ◽  
pp. 1-7 ◽  
Author(s):  
Tiffany C. Y. Cheung ◽  
Karen P. Y. Liu ◽  
Janet Y. H. Wong ◽  
Young-Hyeon Bae ◽  
Stanley Sai-Chuen Hui ◽  
...  
Keyword(s):  
Heart Rate ◽  
Skin Temperature ◽  
Perceived Stress ◽  
Stress Level ◽  
Tai Chi ◽  
Cardiovascular Responses ◽  
Blood Oxygenation ◽  
Middle Aged ◽  
Middle Aged Adults ◽  
Palmar Skin

This study explored the immediate effects of Tai Chi (TC) training on attention and meditation, perceived stress level, heart rate, oxygen saturation level in blood, and palmar skin temperature in late middle-aged adults. Twenty TC practitioners and 20 nonpractitioners volunteered to join the study. After baseline measurements were taken, the TC group performed TC for 10 minutes while their cognitive states and cardiovascular responses were concurrently monitored. The control group rested for the same duration in a standing position. Both groups were then reassessed. The participants’ attention and meditation levels were measured using electroencephalography; stress levels were measured using Perceived Stress Scale; heart rate and blood oxygenation were measured using an oximeter; and palmar skin temperature was measured using an infrared thermometer. Attention level tended to increase during TC and dropped immediately thereafter (p<0.001). Perceived stress level decreased from baseline to posttest in exclusively the TC group (p=0.005). Heart rate increased during TC (p<0.001) and decreased thereafter (p=0.001). No significant group, time, or group-by-time interaction effects were found in the meditation level, palmar skin temperature, and blood oxygenation outcomes. While a 10-minute TC training could temporarily improve attention and decrease perceived stress levels, it could not improve meditation, palmar skin temperature, or blood oxygenation among late middle-aged adults.

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