Seasonal Variation of Red Blood Cell Variables in Physically Inactive Men: Effects of Strength Training

Hu, Min; Finni, Taija; Sedliak, Milan; Zhou, Weiwei; Alén, Markku; Cheng, Sulin

doi:10.1055/s-2007-989320

Cited by 33 publications

(38 citation statements)

References 18 publications

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“…The present study also suggests, based on blood platelet levels that the same is true with the blood clotting function. A small but statistically signiWcant increase in blood hematocrit after the RT period especially in the young (design III) agrees with a recent study in young and middle-aged men (Hu et al 2008). Moreover, blood hematocrit has been previously found to be higher in strengthtrained athletes than endurance-or mixed-trained subjects (Schumacher et al 2002).…”

Section: Discussionsupporting

confidence: 91%

Effects of resistance exercise and protein ingestion on blood leukocytes and platelets in young and older men

et al. 2010

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This study investigated, in a multi-experiment design, the acute effects of milk protein ingestion, aging [50 young (approximately 26 years) vs. 45 older (approximately 61 years) men] and training state for the blood leukocyte and platelet responses acutely after a single bout of resistance exercise (RE). Moreover, basal effects of 21 weeks of resistance training (RT) were examined. The single bout of RE rapidly increased all blood leukocytes and platelets (P < 0.05). Protein ingestion before or before and after the RE bout did not have an effect on this response. However, younger men had a larger immediate exercise-induced response in leukocytes and platelets than older men. Basal fasting levels of leukocytes and platelets remained unchanged after 21 weeks of RT and this RT period did not change the acute RE-induced leukocyte and platelet response. The long-term RT was, however, able to slightly increase blood hematocrit. Blood platelet counts were consistently higher in the younger men when compared to the older men. Blood lymphopenia occurred only after a larger volume of exercise. In conclusion, the acute increase in blood leukocytes and platelets may be smaller in the older as when compared to the younger men. However, the number of immune cells and thus probably their function may not be affected by milk protein ingestion or months of resistance training.

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Section: Discussionsupporting

confidence: 91%

Effects of resistance exercise and protein ingestion on blood leukocytes and platelets in young and older men

et al. 2010

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“…It was noted that power athletes had higher Hb, HCT and RBC than endurance athletes [25]. We found that strength training increased HCT and RBC and decreased MCHC in 20- to 45-year-old physically inactive men [31]. McCarthy et al [21] reported that 12 weeks of strength training in sedentary young and middle-aged men could elevate erythrocyte volume and blood volume, but the increase in plasma volume did not reach statistical significance.…”

Section: Effects Of Exercise Training On the Erythrocytic Systemmentioning

confidence: 88%

“…Identically, a cross-sectional study [25] and longitudinal studies [21,28,31,37,38] showed that strength training stimulates erythropoiesis in young and middle-aged subjects, while some previous papers did not demonstrate an improvement in Hb and HCT in young subjects [39,40]. Several factors could also be proposed to further explain these discrepancies.…”

Section: Effects Of Exercise Training On the Erythrocytic Systemmentioning

confidence: 99%

“…Firstly, in the adaptation of the erythrocytic system to strength training, the training mode, intensity, frequency and volume as well as duration might play an important role. Secondly, seasonal variation of red blood cell variables exists [31], and this possible effect of a concomitant, potentially confounding factor was probably not controlled for in some studies. Thirdly, age seems to be an influential factor for erythrocytic adaptation to strength training [38].…”

Section: Effects Of Exercise Training On the Erythrocytic Systemmentioning

confidence: 99%

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Effects of Exercise Training on Red Blood Cell Production: Implications for Anemia

Hu¹,

Wei²

2012

Acta Haematol

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Exercise training can increase total Hb and red cell mass, which enhances oxygen-carrying capacity. The possible underlying mechanisms are proposed to come mainly from bone marrow, including stimulated erythropoiesis with hyperplasia of the hematopoietic bone marrow, improvement of the hematopoietic microenvironment induced by exercise training, and hormone- and cytokine-accelerated erythropoiesis. Anemia is one of the most common medical conditions in chronic disease. The effects of exercise training on counteracting anemia have been explored and evaluated. The results of the research available to date are controversial, and it seems that significant methodological limitations exist. However, exercise training might be a promising, additional, safe and economical method to help improve anemia. There is a need for further investigation into the effects of and guidelines for exercise interventions (especially strength training) in this population of patients, particularly among cancer patients who are undergoing or have undergone chemotherapy or radiation treatments. As the available data are limited, additional research to uncover the underlying mechanisms associated with the effects of exercise training on anemia is clearly warranted.

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“…HCT significantly more increased in step dance group as compared with aerobic dance group. The consequence of HCT increment might be increased viscosity of the blood (Hu et al, 2008). The reason of increase in hematocrit volume can be explained as depending on hemoconsantration and transferring of high volume hematocrit from splenic circulation to circular circulation (Guyton & Hail, 2000).…”

Section: Discussionmentioning

confidence: 99%

Examining of the effects of aerobic dance and step dance exercises on some hematological parameters and blood lipids

İrez

Saygın

2014

HumanSciences

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The aim of the study was to examine the the effects of aerobic and step dance exercises on hematological and blood lipids parameters. 32 university students were voluntarily participated in this study. They were randomly assigned to aerobic dance (N=16) and step dances (N=16). All groups were participated an hour aerobic or step dance exercise session 2 times in a week during 3 months. Wilcoxon Sign test was used to analyze pretest and posttest results of variables. As results, significant differences were found in the pre-and post-intervention scores for triglycerides (TC), red blood cell (RBC), and hematocrit (HCT) in Step dance group. Although there were decreases in triglycerides levels for both aerobic dance and step dance groups, only significant reduction was found in step dance group.Step dance exercises was better than aerobic dance in terms of increasing RBC and decreasing cholesterol, low density lipoproteins (LDL) cholesterol level. Aerobic dance exercises were better than step dance in terms of increasing high density lipoproteins (HDL). Moreover, when comparing the level of decreasing of Hemoglobin (HGB) significantly, aerobic dance group were better than step dance group. HCT increased significantly more in step dance group as compared with aerobic dance group.Step dance cause more increment than aerobic dance in terms of platetes (PLT) level. The data of this study indicates that step dance is more effective than aerobic dance in terms of decreasing LDL cholesterol, triglycerides and cholesterol for university students.4

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Seasonal Variation of Red Blood Cell Variables in Physically Inactive Men: Effects of Strength Training

Cited by 33 publications

References 18 publications

Effects of resistance exercise and protein ingestion on blood leukocytes and platelets in young and older men

Effects of resistance exercise and protein ingestion on blood leukocytes and platelets in young and older men

Effects of Exercise Training on Red Blood Cell Production: Implications for Anemia

Examining of the effects of aerobic dance and step dance exercises on some hematological parameters and blood lipids

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