Sharon Mkumbuzi | University of Zimbabwe (original) (raw)

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Papers by Sharon Mkumbuzi

Research paper thumbnail of FIFA Football Nurse – A task sharing approach in Sports and Exercise Medicine practice in grassroots women’s football in low- and middle- income settings. A study protocol for a parallel randomised controlled trial

Football (soccer) is a very popular team sport among African women and girls, with player numbers... more Football (soccer) is a very popular team sport among African women and girls, with player numbers continuing to rise at all levels of the sport. Whereas the participation in football and associated injuries are on the rise, there are not enough sports and exercise medicine (SEM) personnel to attend to these women football players. While Africa may not currently have enough SEM trained medical doctors and/or physiotherapists, it has relatively higher numbers of other healthcare workers; for example, nurses, who lead healthcare services provision from community to tertiary levels. The objectives of this study will be to develop a task sharing approach to actively recruit and train nurses as pitch side responders in grassroots women’s football in Malawi’s Women’s Football League. This study will be a parallel randomised control trial will recruit 24 teams from the Women’s Football League in Malawi, which will be randomised to either the intervention group or the control group. A cohort...

Research paper thumbnail of Sports physiotherapists’ contribution to the sports and exercise medicine team: moving forward, together

British Journal of Sports Medicine

Research paper thumbnail of ’We are not all in the same boat. We are in the same storm. Some are on super-yachts. Some have just the one oar.’ How COVID-19 exaggerated global inequities in professional sport

British Journal of Sports Medicine

Research paper thumbnail of The menstrual cycle and football: The experiences of female African football players

Science and Medicine in Football, 2021

Research paper thumbnail of Making movement matter

British Journal of Sports Medicine

Research paper thumbnail of Genetic Variation as a Possible Explanation for the Heterogeneity of Pain in Tendinopathy: What can we learn from other pain syndromes?

Central European Journal of Sport Sciences and Medicine

Research paper thumbnail of Conditioned pain modulation is not altered in recreational athletes with Achilles tendinopathy

Translational Sports Medicine, 2020

Altered central pain mechanisms is a feature of other chronic pain states and upper limb tendinop... more Altered central pain mechanisms is a feature of other chronic pain states and upper limb tendinopathies. It is uncertain whether the same applies to chronic Achilles tendinopathy (AT).

Research paper thumbnail of The menstrual cycle and football: The experiences of female African football players

Science and Medicine in Football

Research paper thumbnail of Age and prior exercise in vivo determine the subsequent in vitro molecular profile of myoblasts and nonmyogenic cells derived from human skeletal muscle

The decline in skeletal muscle regenerative capacity with age is partly attributed to muscle stem... more The decline in skeletal muscle regenerative capacity with age is partly attributed to muscle stem cell (satellite cell) dysfunction. Recent evidence has pointed to a strong interaction between myoblasts and fibroblasts, but the influence of age on this interaction is unknown. Additionally, while the native tissue environment is known to determine the properties of myogenic cells in vitro, how the aging process alters this cell memory has not been established at the molecular level. We recruited 12 young and 12 elderly women, who performed a single bout of heavy resistance exercise with the knee extensor muscles of one leg. Five days later, muscle biopsies were collected from both legs, and myogenic cells and nonmyogenic cells were isolated for in vitro experiments with mixed or separated cells and analyzed by immunostaining and RT-PCR. A lower myogenic fusion index was detected in the cells from the old versus young women, in association with differences in gene expression levels of...

Research paper thumbnail of Injury, illness, and medication use surveillance during the 2020 COSAFA Women’s championship: a prospective cohort study of football players from Southern Africa

Science and Medicine in Football, 2021

Background: Systematic analyses of injuries, illnesses or medication use and their risk factors a... more Background: Systematic analyses of injuries, illnesses or medication use and their risk factors among female African athletes are scarce, which has implications for management of these athletes. Ai...

Research paper thumbnail of Ultrasound findings are not associated with tendon pain in recreational athletes with chronic Achilles tendinopathy

Translational Sports Medicine

Achilles tendinopathy (AT) is associated with pain and altered ultrasound (US) and color Doppler ... more Achilles tendinopathy (AT) is associated with pain and altered ultrasound (US) and color Doppler (CD) findings. However, the relationship between them is equivocal, perhaps because previous studies have only used the VISA‐A scale as the measure of tendon pain. To determine the relationship between tendon US and CD findings and self‐reported pain using the VISA‐A, Short‐form McGill Pain Questionnaire (sf‐MPQ), and Short‐form Brief Pain Inventory (sf‐BPI). Recreational athletes with AT rated their tendon pain on the VISA‐A, sf‐MPQ, and sf‐BPI. The Achilles tendons of runners with (TEN, n = 127) and without tendinopathy (CON, n = 103) were examined using conventional grayscale ultrasound and CD settings. Participants with AT had thicker tendons (mm) (median [IQR]) [TEN‐ 6.2 (5.3‐7.9) vs CON 5.5 (4.8; 6.0)] (P < 0,001); abnormal tendon ultrasound appearances (P = .001); and more neovessels than healthy controls (P < .001). No differences were noted between tendon pain scores and US or CD abnormalities (P > .05). Tendinopathy is associated with US and CD changes that may be of some prognostic value. The mismatch between patient‐reported symptoms and US and CD findings could be indicative of the need to standardize US and CD protocols in order to enhance comparisons across the studies.

Research paper thumbnail of Characterisation of Achilles tendon pain in recreational runners using multidimensional pain scales

Objectives: The main assessment tool for Achilles tendinopathy (AT) is the VISA-A. However, the V... more Objectives: The main assessment tool for Achilles tendinopathy (AT) is the VISA-A. However, the VISA-A only assesses the physical impairments that result from tendon pain. This study sought to describe and assess tendon pain using other multidimensional pain scales; the short forms of the McGill pain questionnaire (sf-MPQ) and the Brief Pain Inventory (sf-BPI). Design: Cross sectional observational study. Methods: 124 recreational runners with clinically confirmed mid-portion Achilles tendinopathy for at least 3 months were recruited from Cape Town, South Africa. They described and rated their tendinopathy symptoms by completing the VISA-A, sf-BPI and sf-MPQ questionnaires. Results: Tendon pain was largely described as a sensory type of pain with minimal affective elements. Sixty percent described their pain as aching. Significant proportions described it as tender (52.9%), throbbing (33.9%), hot burning (24.8%) and 33.8% ranked it as discomfiting or worse on the pain intensity score of the sf-MPQ. Tendon pain interfered with mood in 50.8% of the participants as well as with walking ability (72.5%), sleep (34.8%) and enjoyment of life (54.2%). Conclusions: Tendon pain was described using a variety of adjectives which may suggest that AT has clinical subtypes. Tendon pain interferes with more than just physical function. Therefore, the recommendation is to conduct further studies using various pain questionnaires to elicit more details and better understand the nature of Achilles tendon pain.

Research paper thumbnail of Out of sight, out of mind: the invisibility of female African athletes in sports and exercise medicine research

British Journal of Sports Medicine

Research paper thumbnail of Use of non-steroidal anti-inflammatory drugs and nutritional supplements in Zimbabwean football

South African Journal of Sports Medicine

Background. The use of medications by football players in many populations is known to be high. D... more Background. The use of medications by football players in many populations is known to be high. Data on African players are scarce. Objective. To determine the magnitude of use of non-steroidal anti-inflammatory drugs (NSAIDs) and nutritional supplements by Zimbabwean football players. Methods. We conducted a cross-sectional study during the 2011/2012 Premier Soccer League football season. A total of 86 players responded to a self-administered questionnaire that assessed self-reported use of NSAIDs and nutritional supplements. Results. All the participants admitted to taking NSAIDs, with 44% self-prescribing. Nutritional supplements were taken by 56% of the respondents. Of these, 21% took them on a daily basis and 40% did so without professional advice. Conclusion. Regular, self-prescribed use of NSAIDs and nutritional supplements is high among Zimbabwean football players.

Research paper thumbnail of FIFA Football Nurse – A task sharing approach in Sports and Exercise Medicine practice in grassroots women’s football in low- and middle- income settings. A study protocol for a parallel randomised controlled trial

Football (soccer) is a very popular team sport among African women and girls, with player numbers... more Football (soccer) is a very popular team sport among African women and girls, with player numbers continuing to rise at all levels of the sport. Whereas the participation in football and associated injuries are on the rise, there are not enough sports and exercise medicine (SEM) personnel to attend to these women football players. While Africa may not currently have enough SEM trained medical doctors and/or physiotherapists, it has relatively higher numbers of other healthcare workers; for example, nurses, who lead healthcare services provision from community to tertiary levels. The objectives of this study will be to develop a task sharing approach to actively recruit and train nurses as pitch side responders in grassroots women’s football in Malawi’s Women’s Football League. This study will be a parallel randomised control trial will recruit 24 teams from the Women’s Football League in Malawi, which will be randomised to either the intervention group or the control group. A cohort...

Research paper thumbnail of Sports physiotherapists’ contribution to the sports and exercise medicine team: moving forward, together

British Journal of Sports Medicine

Research paper thumbnail of ’We are not all in the same boat. We are in the same storm. Some are on super-yachts. Some have just the one oar.’ How COVID-19 exaggerated global inequities in professional sport

British Journal of Sports Medicine

Research paper thumbnail of The menstrual cycle and football: The experiences of female African football players

Science and Medicine in Football, 2021

Research paper thumbnail of Making movement matter

British Journal of Sports Medicine

Research paper thumbnail of Genetic Variation as a Possible Explanation for the Heterogeneity of Pain in Tendinopathy: What can we learn from other pain syndromes?

Central European Journal of Sport Sciences and Medicine

Research paper thumbnail of Conditioned pain modulation is not altered in recreational athletes with Achilles tendinopathy

Translational Sports Medicine, 2020

Altered central pain mechanisms is a feature of other chronic pain states and upper limb tendinop... more Altered central pain mechanisms is a feature of other chronic pain states and upper limb tendinopathies. It is uncertain whether the same applies to chronic Achilles tendinopathy (AT).

Research paper thumbnail of The menstrual cycle and football: The experiences of female African football players

Science and Medicine in Football

Research paper thumbnail of Age and prior exercise in vivo determine the subsequent in vitro molecular profile of myoblasts and nonmyogenic cells derived from human skeletal muscle

The decline in skeletal muscle regenerative capacity with age is partly attributed to muscle stem... more The decline in skeletal muscle regenerative capacity with age is partly attributed to muscle stem cell (satellite cell) dysfunction. Recent evidence has pointed to a strong interaction between myoblasts and fibroblasts, but the influence of age on this interaction is unknown. Additionally, while the native tissue environment is known to determine the properties of myogenic cells in vitro, how the aging process alters this cell memory has not been established at the molecular level. We recruited 12 young and 12 elderly women, who performed a single bout of heavy resistance exercise with the knee extensor muscles of one leg. Five days later, muscle biopsies were collected from both legs, and myogenic cells and nonmyogenic cells were isolated for in vitro experiments with mixed or separated cells and analyzed by immunostaining and RT-PCR. A lower myogenic fusion index was detected in the cells from the old versus young women, in association with differences in gene expression levels of...

Research paper thumbnail of Injury, illness, and medication use surveillance during the 2020 COSAFA Women’s championship: a prospective cohort study of football players from Southern Africa

Science and Medicine in Football, 2021

Background: Systematic analyses of injuries, illnesses or medication use and their risk factors a... more Background: Systematic analyses of injuries, illnesses or medication use and their risk factors among female African athletes are scarce, which has implications for management of these athletes. Ai...

Research paper thumbnail of Ultrasound findings are not associated with tendon pain in recreational athletes with chronic Achilles tendinopathy

Translational Sports Medicine

Achilles tendinopathy (AT) is associated with pain and altered ultrasound (US) and color Doppler ... more Achilles tendinopathy (AT) is associated with pain and altered ultrasound (US) and color Doppler (CD) findings. However, the relationship between them is equivocal, perhaps because previous studies have only used the VISA‐A scale as the measure of tendon pain. To determine the relationship between tendon US and CD findings and self‐reported pain using the VISA‐A, Short‐form McGill Pain Questionnaire (sf‐MPQ), and Short‐form Brief Pain Inventory (sf‐BPI). Recreational athletes with AT rated their tendon pain on the VISA‐A, sf‐MPQ, and sf‐BPI. The Achilles tendons of runners with (TEN, n = 127) and without tendinopathy (CON, n = 103) were examined using conventional grayscale ultrasound and CD settings. Participants with AT had thicker tendons (mm) (median [IQR]) [TEN‐ 6.2 (5.3‐7.9) vs CON 5.5 (4.8; 6.0)] (P < 0,001); abnormal tendon ultrasound appearances (P = .001); and more neovessels than healthy controls (P < .001). No differences were noted between tendon pain scores and US or CD abnormalities (P > .05). Tendinopathy is associated with US and CD changes that may be of some prognostic value. The mismatch between patient‐reported symptoms and US and CD findings could be indicative of the need to standardize US and CD protocols in order to enhance comparisons across the studies.

Research paper thumbnail of Characterisation of Achilles tendon pain in recreational runners using multidimensional pain scales

Objectives: The main assessment tool for Achilles tendinopathy (AT) is the VISA-A. However, the V... more Objectives: The main assessment tool for Achilles tendinopathy (AT) is the VISA-A. However, the VISA-A only assesses the physical impairments that result from tendon pain. This study sought to describe and assess tendon pain using other multidimensional pain scales; the short forms of the McGill pain questionnaire (sf-MPQ) and the Brief Pain Inventory (sf-BPI). Design: Cross sectional observational study. Methods: 124 recreational runners with clinically confirmed mid-portion Achilles tendinopathy for at least 3 months were recruited from Cape Town, South Africa. They described and rated their tendinopathy symptoms by completing the VISA-A, sf-BPI and sf-MPQ questionnaires. Results: Tendon pain was largely described as a sensory type of pain with minimal affective elements. Sixty percent described their pain as aching. Significant proportions described it as tender (52.9%), throbbing (33.9%), hot burning (24.8%) and 33.8% ranked it as discomfiting or worse on the pain intensity score of the sf-MPQ. Tendon pain interfered with mood in 50.8% of the participants as well as with walking ability (72.5%), sleep (34.8%) and enjoyment of life (54.2%). Conclusions: Tendon pain was described using a variety of adjectives which may suggest that AT has clinical subtypes. Tendon pain interferes with more than just physical function. Therefore, the recommendation is to conduct further studies using various pain questionnaires to elicit more details and better understand the nature of Achilles tendon pain.

Research paper thumbnail of Out of sight, out of mind: the invisibility of female African athletes in sports and exercise medicine research

British Journal of Sports Medicine

Research paper thumbnail of Use of non-steroidal anti-inflammatory drugs and nutritional supplements in Zimbabwean football

South African Journal of Sports Medicine

Background. The use of medications by football players in many populations is known to be high. D... more Background. The use of medications by football players in many populations is known to be high. Data on African players are scarce. Objective. To determine the magnitude of use of non-steroidal anti-inflammatory drugs (NSAIDs) and nutritional supplements by Zimbabwean football players. Methods. We conducted a cross-sectional study during the 2011/2012 Premier Soccer League football season. A total of 86 players responded to a self-administered questionnaire that assessed self-reported use of NSAIDs and nutritional supplements. Results. All the participants admitted to taking NSAIDs, with 44% self-prescribing. Nutritional supplements were taken by 56% of the respondents. Of these, 21% took them on a daily basis and 40% did so without professional advice. Conclusion. Regular, self-prescribed use of NSAIDs and nutritional supplements is high among Zimbabwean football players.