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Do G894T Polymorphisms of Endothelial Nitric Oxide Synthase 3 (NOS3) Influence Endurance Phenotypes?

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Cięszczyk P., Sawczuk M., Maciejewska A., Jascaniene N., Eider J.

Journal of Human Kinetics

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2010

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vol. 24

73-80

EN

Endothelial nitric oxide (NO) synthase gene (NOS3) is taken into account as one of the main regulators of blood pressure and basal vascular dilation - two main factors found to be limiting for endurance performance.We compared genotypic and allelic frequencies of the NOS3 G894T polymorphism in two groups of men of the same Caucasian descent: elite endurance athletes (rowers; n=63) and sedentary controls (n=160).We have not found any statistical difference in G894T genotype and allele frequencies in endurance orientated athletes compared to sedentary controls. The difference in G allele frequency between the rowers and controls did not reach statistical significance (73.5% vs. 67.2%, P = 0.307), similar to genotype distribution amongst the rowers (58.7% GG; 39.4% GT; 6.4% TT) compared to controls (43.7% GG; 46.9% GT; 9.4% TT) (P=0.129).In summary, our results are in contradiction to the hypothesis that NOS3 G894T polymorphism is associated with the physical performance status in rowing. Of course, our findings do not mean that other polymorphisms in NOS3 gene do not have any beneficial effect on performance parameters, but to confirm that hypothesis, we need further studies.

2

Specialized Movement on the Rowing Ergometer and Post-workout Changes in Selected Peripheral Blood Parameters - a Case Report.

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Proia P., Amato A., Contró V., Thiel D., Vostatková P., Buryta B., Kolbowicz M., Lewandowski T., Nowakowska A.

Central European Journal of Sport Sciences and Medicine

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2018

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vol. 24

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issue 4

5-13

EN

Rowing is a sport discipline, which requires extreme physical strength and endurance and appropriate aerobic and anaerobic capacity as well. However, when the workout intensity and load is very high, exercise is associated with temporary changes in cellular metabolism and the immune system. The study included one male rower aged 28 years - the highly-skilled and experienced athlete. We determined basic cardiorespiratory fitness measures, complete blood count, and 24 clinical chemistry parameters including relevant biochemical and haematological parameters and matrix metaloproteinases activities. Maximal exercise on the rowing ergometer induced 2-fold increase in absolute counts of all leukocytes subsets. There was observed an increase in C-reactive protein concentrations as well. MMP-9 activity increased 1,3-fold compared to the baseline value. Exhaustive exercise caused significant changes in creatinine and urea serum levels, but the most prominent changes were found in total and direct bilirubin concentrations. Maximal exercise induced also a decrease in the iron and magnesium levels. No changes in ALT, GGT and ALP activity were observed, while increase in CK, AST and LDH activity in post-exercise time and the decrease during the recovery was found. Therefore acute specialized movement on the rowing ergometer is not the cause of muscular damage, but rather indicate efficient adaptation to the physical exercise. Moreover, it seems that maximal exercise induces an inflammatory response characterized by greater count of all subpopulations of leukocytes, elevated levels of CRP and MMP-9 serum activity.

3

Oarsmen's Views about the Effects of Training on their Daily Lives. Applying Goffman's Theory in the Rowing Communes.

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Koukouris K., Panagiotis G., Nikos V.

Physical Culture and Sport. Studies and Research

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2009

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vol. 46

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issue 1

194-207

EN

Research on the social dimension of rowing is underrepresented in the coaching science literature. It is well known in rowing circles that many problems arise from the training process in the rowing communes. The complaints of the oarsmen regarding specific problems during the training process in rowing communes were examined in this study. Fourteen oarsmen from Northern Greece with experience from rowing communes were selected and gave in-depth interviews. The complaints expressed by the oarsmen in interviews include the following: Athletic failure in major international events, as expressed subjectively by the oarsmen, results from fatigue prior to events, the incorrect timing of competitive goals (selection in the national team versus success in the international events) and the lack of meritocracy in the selection of oarsmen for the national team. Oarsmen of the national team neglect their studies and their professional future. During their stay in rowing communes the oarsmen are cut off from their social contacts. All oarsmen agreed that competing for a place in the team is a greater source of stress than the actual competition itself. Oarsmen believe that the presence of Greece in international competitions results from the efforts of athletes rather than those of coaches and administrators.

4

TheGABPB1gene A/G polymorphism in Polish rowers

88%

Maciejewska-Karłowska A., Leońska-Duniec A., Cięszczyk P., Sawczuk M., Eider J., Ficek K., Sawczyn S.

Journal of Human Kinetics

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2012

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vol. 31

115-120

EN

Nuclear respiratory factor 2 (NRF2), also referred to as the GA-binding protein (GABP) transcription factor, is a key transcriptional activator of many nuclear genes which encode a wide range of mitochondrial enzymes. The variants of the GABPB1 gene encoding the beta1 subunit of NRF2 protein have been associated with physical performance, particularly endurance. The aim of this study was to confirm the possible importance of the A/G polymorphism (rs7181866) in intron 3 of the GABPB1 gene in Polish rowers. The study was carried out on 55 Polish rowers and sedentary individuals, to evaluate the possible relationships between genotype and physical performance. DNA was extracted from buccal cells donated by the subjects. Genotyping was carried out by PCR-RFLP. The results revealed that the frequency of the GABPB1 A/G genotype (89.09% AA; 10.91% AG, 0% GG; vs. 97.69% AA; 2.31% AG; 0.00% GG) %; P = 0.012) and G allele (5.50% vs. 1.17%; P = 0.014) was significantly higher in the rowers compared to controls. The results suggest that the GABPB1 gene can be taken into consideration as a genetic marker in endurance athletes. However, these conclusions should be supported with more experimental studies on other GABPB1 polymorphisms and other genes in elite endurance athletes.

5

A Physiological and Kinematic Comparison of two Different Lean Back Positions During Stationary Rowing on a Concept II Machine

75%

Bell G., Bennett J., Reynolds W., Syrotuik D., Gervais P.

Journal of Human Kinetics

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2013

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vol. 37

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issue 1

99-108

EN

This study compared two different body positions at the finish of a stroke during stationary rowing exercise on physiological and kinematic measurements. Nine male and five female rowers volunteered for the study: mean age (± SD), body height and body mass were 27 ±9 yrs, 180.5 ±12.3 cm and 81.2 ±14.2 kg. The two body positions at the finish were controlled at an upright posture or a novel greater lean back position. All subjects completed 3 different experimental trials on a Concept IID rowing machine at 3 different exercise intensities and comparisons were made between the lean back position at the same stroke rate and the same power output as the upright trial. Power output, heart rate, oxygen uptake, energy expenditure and % efficiency were higher (p<0.05) with the greater lean back position at the same stroke rate compared to all other conditions. Range of motion at the hip, ankle, and elbow and the handle velocity and distance moved were greater (p<0.05) with the lean back position. In conclusion, a greater lean back posture at the finish during stationary rowing produces a higher power output and improved efficiency at the same stroke rate but at an elevated physiological cost compared to a more upright position. Despite the higher energy expenditure, the relative gain in power output and efficiency with no negative kinematic changes suggests that a greater lean back position at the finish will enhance performance during stationary rowing exercise.

Refine search results

Do G894T Polymorphisms of Endothelial Nitric Oxide Synthase 3 (NOS3) Influence Endurance Phenotypes?

Specialized Movement on the Rowing Ergometer and Post-workout Changes in Selected Peripheral Blood Parameters - a Case Report.

Oarsmen's Views about the Effects of Training on their Daily Lives. Applying Goffman's Theory in the Rowing Communes.

TheGABPB1gene A/G polymorphism in Polish rowers

A Physiological and Kinematic Comparison of two Different Lean Back Positions During Stationary Rowing on a Concept II Machine