Waldemar Andrzejewski

Prof. Waldemar Andrzejewski

orcid

Research Focus & Metrics

Academic Career Length

18Years (2009-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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ACAgnieszka Chwałczyńska
Agnieszka Chwałczyńska
WAWaldemar Andrzejewski
Waldemar Andrzejewski
The aim of the study is to assess the impact of changes in daily physical activity during the blockade (March 2020–February 2021) on the mass and segmental composition of the body of young people. Material and research methods: In total, 120 people from the sports and medical university aged 19.8 (±0.8) years, average height 173.2 (±9.2) cm, body mass 66.1 (±12.8), and BMI 19.2 (±5.9) kg/m2. The research was carried out in two stages. The total and segmental body mass of the respondents and the change in physical activity during the pandemic were assessed twice (December 2019, February 2021). There was a statistically significant increase in body mass in men, an increase in total fat mass in women, and statistically significant changes in the distribution of fat mass in both sexes. Conclusions: In the studied group, there was a change in the forms of physical activity from strength and group activity to endurance activity (running forms, cycling.) and individual activity. The subjects showed a statistically significant increase in body fat, regardless of gender, and in the upper limbs in men.

29 July 2015 in Folia Histochemica et Cytobiologica
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WAWaldemar Andrzejewski
Waldemar Andrzejewski
KKKrzysztof Kassolik
Krzysztof Kassolik
CKChristopher Kobierzycki
Christopher Kobierzycki
JGJedrzej Grzegrzolka
Jedrzej Grzegrzolka
KRKatarzyna Ratajczak-Wielgomas
Katarzyna Ratajczak-Wielgomas
MPMarzenna Podhorska-Okolow
Marzenna Podhorska-Okolow
Numerous investigations have been carried out to describe the role of massage in preparing for and restoring efficiency after physical exercise. Furthermore, vascular endothelial growth factor (VEGF) enhances blood vessel growth, and in effect contributes to the regeneration of tissues. Since its expression in active skeletal muscles has not been yet determined, the aim of this study was to investigate whether muscle massage performed before and during running exercise affects the expression of VEGF-A in muscles. The study was carried out on 75 adult Buffalo rats subjected to running exercise training for 10 weeks. Rats were massaged prior (group PM) or during exercise (group M) or were not massaged (group C). The massage consisted of spiral movements along the plantar surface of flexor digitorum brevis muscle. After 1, 3, 5, 7 and 10 week of training, five rats from every group were anesthetized and immunohistochemistry, Western blot, and PCR analyses were performed on obtained muscle tissue to determine VEGF-A expression. After the first week of training, a significant increase of VEGF-A gene expression analyzed by qPCR in muscle tissue was observed in the PM group, whereas in the third week, the predominant growth of studied marker was seen in the M group. Increased VEGF-A expression on the protein level was observed in both massaged groups following the first week. A moderate positive correlation was found between the expression of the VEGF-A gene and protein in all experimental groups (r = 0.389). Short-term repeated massage may contribute to processes of creation of new and development of already existing vascular networks in the skeletal muscle tissue during increased exercise.

ASAnna Sojka
Anna Sojka
MMMariusz Machniak
Mariusz Machniak
WAWaldemar Andrzejewski
Waldemar Andrzejewski
Aureliusz KosendiakAureliusz Kosendiak
Aureliusz Kosendiak
ACAgnieszka Chwałczyńska
Agnieszka Chwałczyńska
The aim of this study was to assess the occurrence of non-specific symptoms of “long-COVID syndrome” depending on the physical activity undertaken resulting from the imposed forms of study (distance learning–contact learning); 136 men aged 21.5 ± 1.58 from universities educating students of medical faculties were examined. The difference between the universities was mainly due to the nature of the classes undertaken (classes remotely-hybrid form) in the period from March 2020 to February 2021. Among the respondents, 17% in Group I and 16% in Group II were infected with the SARS-CoV-2 virus, including 50% in Group I with moderate symptoms, and in Group II—most people 45% with mild symptoms. The conducted research clearly shows the impact of the COVID-19 pandemic on students. They show a number of important problems, such as reduced physical activity, as well as increased body weight and time spent in front of the monitor. They also make it clear that the health consequences of the pandemic affect both people who were infected with the SARS-CoV-2 virus and those who did not suffer from this infection.

12 May 2014 in BioMed Research International
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WAWaldemar Andrzejewski
Waldemar Andrzejewski
KKKrzysztof Kassolik
Krzysztof Kassolik
Piotr DziegielPiotr Dziegiel
Piotr Dziegiel
Bartosz PulaBartosz Pula
Bartosz Pula
KRKatarzyna Ratajczak-Wielgomas
Katarzyna Ratajczak-Wielgomas
MPMarzena Podhorska-Okolow
Marzena Podhorska-Okolow
Physical exercise and massage are regarded as key factors in regulating tendon structure. However, information on the mechanism through which massage influences the structure and biology of a tendon is scarce. In this study, we attempted to define the impact of these two activities on rat tendons by using morphological and molecular techniques, determining the expression of VEGF-A, FGF-2, and CD34 in the tendons of rats subjected to 10 weeks of physical exercise (running) with massage of varied duration. The group of rats that was trained and massaged during the entire study was characterized by the highest expression of these markers, compared to the rats subjected to massage before training and to the control group subjected to physical exercises only. The greatest significant differences, compared to the control, were noted in the expression of all the studied markers at mRNA level, and in the case of VEGF-A, at protein level, in the third and fifth weeks of the experiment. The results of this study could point to the synergistic impact of simultaneous massage and physical exercise on the expression of angiogenesis markers in rat tendons.

22 June 2018 in Folia Histochemica et Cytobiologica
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KRKatarzyna Ratajczak-Wielgomas
Katarzyna Ratajczak-Wielgomas
KKKrzysztof Kassolik
Krzysztof Kassolik
JGJedrzej Grzegrzolka
Jedrzej Grzegrzolka
THTomasz Halski
Tomasz Halski
APAleksandra Piotrowska
Aleksandra Piotrowska
WAWaldemar Andrzejewski
Waldemar Andrzejewski
Introduction. Massage is a physiotherapeutic treatment, commonly used in both therapy and restoration of normal body functions. The aim of this work was to determine the effects of skin massage on stimulating the expression of angiogenesis-initiating factors, i.e. VEGF-A, FGF-2 (bFGF) and CD34 and on skin regeneration processes. Material and methods. The study was conducted on 48 Buffalo strain rats, randomly divided into two groups. In the first group (M, the massaged group), massage was applied five times a week for 7 weeks. In the second study group (C, the control group), the massage was omitted. Massage consisted of spiral movements at the plantar surface of skin for 5 min on each rear extremity. The gene expression of proangiogenic factors, including VEGF-A, FGF-2, CD34 at the mRNA level was determined using real-time PCR. Immunohistochemistry was performed on paraffin sections of rat skin to determine VEGF-A, FGF-2 CD34 and Ki-67expression. Results. An increase in mRNA expression in the skin of the rat’s rear extremity for VEGF-A and FGF-2 in the first week of the experiment was shown in the M group compared with the control rats. The upregulation of CD34 mRNA expression was also observed in the M group. We observed positive correlations between VEGF-A mRNA expression and the expression of mRNA for FGF-2 and CD34, as well as correlation between the expression of mRNA for FGF-2 and CD34. The immunohistochemical expression of VEGF-A, FGF-2 and CD34 was at a much lower level in the skin of control rats relative to the skin of massaged animals. Moreover, significantly higher immunoreactivity was shown for nuclear protein Ki-67 in epidermal cells in the M group compared with the C group. Conclusion. Rat skin massage increased the expression of the main angiogenesis-stimulating factors and the proliferative activity of epidermal cells, which can stimulate skin regeneration and tissue repairing processes.   Introduction. Massage is a physiotherapeutic treatment, commonly used in both therapy and restoration of normal body functions. The aim of this work was to determine the effects of skin massage on stimulating the expression of angiogenesis-initiating factors, i.e. VEGF-A, FGF-2 (bFGF) and CD34 and on skin regeneration processes. Material and methods. The study was conducted on 48 Buffalo strain rats, randomly divided into two groups. In the first group (M, the massaged group), massage was applied five times a week for 7 weeks. In the second study group (C, the control group), the massage was omitted. Massage consisted of spiral movements at the plantar surface of skin for 5 min on each rear extremity. The gene expression of proangiogenic factors, including VEGF-A, FGF-2, CD34 at the mRNA level was determined using real-time PCR. Immunohistochemistry was performed on paraffin sections of rat skin to determine VEGF-A, FGF-2 CD34 and Ki-67expression. Results. An increase in mRNA expression in the skin of the rat’s rear extremity for VEGF-A and FGF-2 in the first week of the experiment was shown in the M group compared with the control rats. The upregulation of CD34 mRNA expression was also observed in the M group. We observed positive correlations between VEGF-A mRNA expression and the expression of mRNA for FGF-2 and CD34, as well as correlation between the expression of mRNA for FGF-2 and CD34. The immunohistochemical expression of VEGF-A, FGF-2 and CD34 was at a much lower level in the skin of control rats relative to the skin of massaged animals. Moreover, significantly higher immunoreactivity was shown for nuclear protein Ki-67 in epidermal cells in the M group compared with the C group. Conclusion. Rat skin massage increased the expression of the main angiogenesis-stimulating factors and the proliferative activity of epidermal cells, which can stimulate skin regeneration and tissue repairing processes.  

1 October 2021 in Journal of Clinical Medicine
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MZMaciej Zalewski
Maciej Zalewski
GKGabriela Kołodyńska
Gabriela Kołodyńska
AMAnna Mucha
Anna Mucha
WAWaldemar Andrzejewski
Waldemar Andrzejewski
Background: Urinary incontinence (UI) is a significant social problem. The latest figures show that it affects as many as 17–60% of the female population, and it is one of the most common chronic diseases. Incontinence substantially decreases the quality of patients’ lives. The transobturator tape (TOT) procedure is the gold standard in surgical treatment due to its high efficacy and low complication rate. Objective: The aim of this study was to assess the quality of life (QoL) of patients with stress incontinence before and after the TOT procedure. Method: The study included 57 patients diagnosed with stress incontinence on the basis of ultrasonography and history. The QoL before and after surgery was measured using the Incontinence Impact Questionnaire (IIQ-7) and the Incontinence Quality of Life (I-QOL) standardised questionnaires. Results: The IIQ-7 scores for each question were higher (indicating poorer quality of life) before surgery than after surgery. The results for almost all domains were statistically significant. The I-QOL results also showed that, in most cases, the quality of patients’ lives improved after the surgery. Statistically significant changes were observed in all three questionnaire domains of avoidance/limiting behaviour, psychosocial impact, and social embarrassment. Conclusion: Surgical treatment of stress incontinence with TOT results in resolution of bothersome symptoms in the majority of patients, leading to improved comfort in life.