Effects of exercise training on thermoregulatory  responses and blood volume in older men

Okazaki, Kazunobu; Kamijo, Yoshi‐ichiro; Takeno, Yoshiaki; Okumoto, Tadashi; Masuki, Shizue; Nosé, Hiroshi

doi:10.1152/japplphysiol.00222.2002

Cited by 72 publications

(103 citation statements)

References 34 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Additionally, six of nine studies [4,9,18,21,24,33,39,49,53] in older subjects have reported significant improvements in VO 2 max following RT ( Table 2).…”

Section: Older Subjectsmentioning

confidence: 98%

Resistance training induced increase in VO2max in young and older subjects

Ozaki

Loenneke

Thiebaud

et al. 2013

Eur Rev Aging Phys Act

View full text Add to dashboard Cite

It is an undeniable fact that resistance training (RT) is a potent stimulus for muscle hypertrophy and strength gain, but it is less understood whether RT can increase maximal aerobic capacity (VO 2 max). The purpose of this brief review is to discuss whether or not RT enhances VO 2 max in young (20-40 years) and older subjects (>60 years). Only 3 of 17 studies involving young subjects have indicated significant increases in VO 2 max following RT, while six of nine studies in older subjects have reported significant improvements in VO 2 max following RT. There was a significant negative correlation between the initial VO 2 max and RT-induced change in VO 2 max. This result suggests that RT-induced increase in VO 2 max is dependent upon the subject's initial VO 2 max. The RT-induced increase in VO 2 max may be elicited when their initial relative VO 2 max is lower than 25 ml/kg/min for older subjects and lower than 40 ml/kg/min for young subjects. Thus, RT can be expected to improve concurrently both muscular and cardiovascular fitnesses within a single mode of RT when young and old persons have initially low fitness levels.

show abstract

“…Additionally, six of nine studies [4,9,18,21,24,33,39,49,53] in older subjects have reported significant improvements in VO 2 max following RT ( Table 2).…”

Section: Older Subjectsmentioning

confidence: 98%

Resistance training induced increase in VO2max in young and older subjects

Ozaki

Loenneke

Thiebaud

et al. 2013

Eur Rev Aging Phys Act

View full text Add to dashboard Cite

show abstract

“…We found that the heart rate (HR) in older men and women walking at the maximal velocity almost reached the age-expected maximal values, 3 suggesting that V · O 2peak would be increased in older people if walking training was performed at a higher intensity than that recommended by current guidelines. 2 Furthermore, we recently observed that cycling exercise training at moderate to high intensity increased thigh muscle strength and mass in older men, 4,5 suggesting that, like traditional resistance training, aerobic exercise training, if performed at the required intensity, can increase thigh muscle strength in older people. On the basis of these findings, we surmised that high-intensity walking training could increase V · O 2peak and muscle mass and strength in older people.…”

mentioning

confidence: 99%

Effects of High-Intensity Interval Walking Training on Physical Fitness and Blood Pressure in Middle-Aged and Older People

Nemoto

Genno

Masuki

et al. 2008

Obstetrical &Amp; Gynecological Survey

Self Cite

View full text Add to dashboard Cite

KEN-ICHI NEMOTO, MS; HIROKAZU GEN-NO, PHD; SHIZUE MASUKI, PHD; KAZUNOBU OKAZAKI, PHD; AND HIROSHI NOSE, MD, PHD OBJECTIVE: To examine whether high-intensity interval walking training increased thigh muscle strength and peak aerobic capacity and reduced blood pressure more than moderateintensity continuous walking training. From May 18, 2004, to October 15, 2004 (5-month study period), 60 men and 186 women with a mean ± SD age of 63±6 years were randomly divided into 3 groups: no walking training, moderate-intensity continuous walking training, and high-intensity interval walking training. Participants in the moderate-intensity continuous walking training group were instructed to walk at approximately 50% of their peak aerobic capacity for walking, using a pedometer to verify that they took 8000 steps or more per day for 4 or more days per week. Those in the high-intensity interval walking training group, who were monitored by accelerometry, were instructed to repeat 5 or more sets of 3-minute low-intensity walking at 40% of peak aerobic capacity for walking followed by a 3-minute high-intensity walking above 70% of peak aerobic capacity for walking per day for 4 or more days per week. Isometric knee extension and flexion forces, peak aerobic capacity for cycling, and peak aerobic capacity for walking were all measured both before and after training. PARTICIPANTS AND METHODS: RESULTS:The targets were met by 9 of 25 men and 37 of 59 women in the no walking training group, by 8 of 16 men and 43 of 59 women in the moderate-intensity continuous walking training group, and by 11 of 19 men and 31 of 68 women in the highintensity interval walking training group. In the high-intensity interval walking training group, isometric knee extension increased by 13%, isometric knee flexion by 17%, peak aerobic capacity for cycling by 8%, and peak aerobic capacity for walking by 9% (all, P<.001), all of which were significantly greater than the increases observed in the moderate-intensity continuous walking training group (all, P<.01). Moreover, the reduction in resting systolic blood pressure was higher for the high-intensity interval walking training group (P=.01).CONCLUSION: High-intensity interval walking may protect against age-associated increases in blood pressure and decreases in thigh muscle strength and peak aerobic capacity.

show abstract

“…Okazaki et al 73) have recently shown that the improved sensitivities of cutaneous vasodilation and sweating responses at a given increase in T es after 18-wk endurance or resistance training in the elderly were positively correlated with the increase in blood volume, suggesting that the reduced heat dissipation mechanisms is closely associating with body fluid regulation (Fig. 6).…”

Section: Impaired Thermoregulatory and Body Fluid Regulationsmentioning

confidence: 92%

“…Okazaki et al 73) assessed the effects of 18-wk exercise training on thermoregulatory responses and blood volume in the elderly, divided into three training regimens; control, aerobic training (50-80% VO 2max 60 min/ d, 3 d/wk), and resistance training (knee extension and flexion at 60-80% of 1 RM × 8, 2-3 sets/d, 3 d/wk, RT) (Fig. 6).…”

Section: Effects Of Exercise Trainingmentioning

confidence: 99%

Heat Illness during Working and Preventive Considerations from Body Fluid Homeostasis

Kamijo

Nosé

2006

Ind Health

Self Cite

View full text Add to dashboard Cite

The purposes of this review are to show pathophysiological mechanisms for heat illness during working in a hot environment and accordingly provide some preventive considerations from a viewpoint of body fluid homeostasis. The incidence of the heat illness is closely associated with body temperature regulation, which is much affected by body fluid state in humans. Heat generated by contracting muscles during working increases body temperature, which, in a feedback manner, drives heat-dissipation mechanisms of skin blood flow and sweating to prevent a rise in body temperature. However, the impairment of heat-dissipation mechanisms caused by hard work in hot, humid, and dehydrated conditions accelerates the increase in body temperature, and, if not properly treated, leads to heat illness. First, we overviewed thermoregulation during working (exercising) in a hot environment, describe the effects of dehydration on skin blood flow and sweating, and then explained how they contributes to the progression toward heat illness. Second, we described the advantageous effects of blood volume expansion after heat acclimatization on temperature regulation during exercise as well as those of restitution from dehydration by supplementation of carbohydrate-electrolyte solution. Finally, we described that the deteriorated thermoregulation in the elderly is closely associated with the impaired body fluid regulation and that blood volume expansion by exercise training with protein supplementation improves thermoregulation.

show abstract

Effects of exercise training on thermoregulatory responses and blood volume in older men

Cited by 72 publications

References 34 publications

Resistance training induced increase in VO2max in young and older subjects

Resistance training induced increase in VO2max in young and older subjects

Effects of High-Intensity Interval Walking Training on Physical Fitness and Blood Pressure in Middle-Aged and Older People

Heat Illness during Working and Preventive Considerations from Body Fluid Homeostasis

Contact Info

Product

Resources

About