A bout of resistance exercise increases urinary calcium  independently of osteoclastic activation in men

Ashizawa, Noriko; Fujimura, Rei; Tokuyama, Kumpei; Suzuki, Masashige

doi:10.1152/jappl.1997.83.4.1159

Cited by 44 publications

(29 citation statements)

References 27 publications

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“…The decline in Ca 2+ concentration can be explained by an increase in urinary calcium excretion. Exercise induces hypercalciuria (Ashizawa et al 1997). Several mechanisms are known to increase urinary calcium excretion (Bronner 1989).…”

Section: Discussionmentioning

confidence: 99%

Parathyroid hormone concentrations during and after two periods of high intensity exercise with and without an intervening recovery period

et al. 2003

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The purpose of this study was to examine the effect of a recovery period between two periods of exercise on bone metabolism and related hormones. Concentrations of serum parathyroid hormone ([PTH]), plasma ionized calcium ([Ca(2+)]) and total calcium were measured. A group of 12 healthy men aged 20-27 years participated in this study. They took part in two exercise protocols (P(1) and P(2)) on two separate weeks. The exercise in P(1) comprised two successive periods of 21 min each at 70% and 85% of maximal oxygen uptake; P(2) comprised two periods of exercise at the same intensities but separated by 40 min of recovery. Venous blood samples were collected 1 day before the sessions (control), before each protocol, during (7th and 21st min), at the end (42nd min in P(1) and 82nd min in P(2)) and after 24 h of recovery. The [PTH] was significantly elevated during the two protocols ( P<0.01), remained raised in P(1) after 24 h of recovery ( P<0.05) and was significantly lower ( P<0.01) at the end of P(2) when compared to P(1). The [Ca(2+)] decreased significantly during and at the end of the two protocols ( P<0.01) and had returned to control values after 24 h of recovery. Plasma lactate concentration increased during the two protocols ( P<0.01) and returned to control values after recovery. These results indicate firstly that [Ca(2+)] decreases during continuous exercise as [PTH] increases and remains raised after 24 h of recovery, secondly that a recovery period between two periods of exercise attenuates the variations in [Ca(2+)] and [PTH], and thirdly that recovery may have anabolic effects on bone. However, the small physiological changes observed prevent us from forming any firm conclusion about this.

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Section: Discussionmentioning

confidence: 99%

Parathyroid hormone concentrations during and after two periods of high intensity exercise with and without an intervening recovery period

et al. 2003

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“…28 At the cellular level, a single bout of intense exercise induces transient increases in serum and urine calcium levels without showing cellular osteoclastical activities. 29,30 With respect to the impact from abnormalities of hormone regulation, oligomenorrhea and amenorrhea related to bone loss are often reported in female runners undergoing intensive training. However, recent investigations suggest that endurance running does not directly cause menstrual disorders and the subsequent bone loss.…”

Section: Results Of Human Studies: Bone Metabolism Status In Distancementioning

confidence: 99%

The Effects of Endurance Running Training on Young Adult Bone: Densitometry vs. Biomaterial Properties

Huang¹,

Chang²,

Chen³

et al. 2011

Biomaterials - Physics and Chemistry

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“…The imbalance between urinary Ca excretion and Ca release from bone may induce a net decrease in serum ionized calcium (iCa) level [23]. The rise in serum PTH level can be the result of the decrease in serum iCa level, the main regulating factor of PTH secretion as there is a strong relationship between extracellular iCa concentration and PTH secretion [24].…”

Section: Discussionmentioning

confidence: 99%

Impact of strenuous exercise on bone metabolism parameters among elderly

Aly¹,

Desouki²,

Abdel-Mottaleb³

et al. 2017

Geriatr Med Care

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Background: Physical activity is known to increase average life expectancy and decrease the risk of development and progression of most chronic degenerative disease states. Strenuous physical activities are found to be associated with a reduced risk of coronary heart disease (CHD) and a significant improvement in glucose control and insulin sensitivity while physical activities of lower intensities were not. However, strenuous exercise was found to increase bone resorption, without a concomitant increase in formation in young adults rendering the bone vulnerable to fracture but there is lack of data supporting these findings among healthy aged population.

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A bout of resistance exercise increases urinary calcium independently of osteoclastic activation in men

Cited by 44 publications

References 27 publications

Parathyroid hormone concentrations during and after two periods of high intensity exercise with and without an intervening recovery period

Parathyroid hormone concentrations during and after two periods of high intensity exercise with and without an intervening recovery period

The Effects of Endurance Running Training on Young Adult Bone: Densitometry vs. Biomaterial Properties

Impact of strenuous exercise on bone metabolism parameters among elderly

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