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Bailey Theall
School of Kinesiology, Louisiana State University, Baton Rouge, LA 70803, USA

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Journal article
Published: 03 August 2021 in Viruses
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Circulating immune cell numbers and phenotypes are impacted by high-intensity acute bouts of exercise and infection history with the latent herpesviruses cytomegalovirus (CMV). In particular, CMV infection history impairs the exercise-induced mobilization of cytotoxic innate lymphoid cells 1 (ILC1) cells, also known as NK cells, in the blood. However, it remains unknown whether exercise and CMV infection modulate the mobilization of traditionally tissue-resident non-cytotoxic ILCs into the peripheral blood compartment. To address this question, 22 healthy individuals with or without CMV (20–35 years—45% CMVpos) completed 30 min of cycling at 70% VO2 max, and detailed phenotypic analysis of circulating ILCs was performed at rest and immediately post-exercise. We show for the first time that a bout of high-intensity exercise is associated with an influx of ILCs that are traditionally regarded as tissue-resident. In addition, this is the first study to highlight that latent CMV infection blunts the exercise-response of total ILCs and progenitor ILCs (ILCPs). These promising data suggest that acute exercise facilitates the circulation of certain ILC subsets, further advocating for the improvements in health seen with exercise by enhancing cellular mobilization and immunosurveillance, while also highlighting the indirect deleterious effects of CMV infection in healthy adults.

ACS Style

Eunhan Cho; Bailey Theall; James Stampley; Joshua Granger; Neil Johannsen; Brian Irving; Guillaume Spielmann. Cytomegalovirus Infection Impairs the Mobilization of Tissue-Resident Innate Lymphoid Cells into the Peripheral Blood Compartment in Response to Acute Exercise. Viruses 2021, 13, 1535 .

AMA Style

Eunhan Cho, Bailey Theall, James Stampley, Joshua Granger, Neil Johannsen, Brian Irving, Guillaume Spielmann. Cytomegalovirus Infection Impairs the Mobilization of Tissue-Resident Innate Lymphoid Cells into the Peripheral Blood Compartment in Response to Acute Exercise. Viruses. 2021; 13 (8):1535.

Chicago/Turabian Style

Eunhan Cho; Bailey Theall; James Stampley; Joshua Granger; Neil Johannsen; Brian Irving; Guillaume Spielmann. 2021. "Cytomegalovirus Infection Impairs the Mobilization of Tissue-Resident Innate Lymphoid Cells into the Peripheral Blood Compartment in Response to Acute Exercise." Viruses 13, no. 8: 1535.

Journal article
Published: 24 September 2020 in Medicina
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Research investigating hydration strategies specialized for women’s soccer players is limited, despite the growth in the sport. The purpose of this study was to determine the effects of fluid balance and electrolyte losses in collegiate women’s soccer players. Eighteen NCAA Division I women’s soccer players were recruited (age: 19.2 ± 1.0yr; weight: 68.5 ± 9.0kg, and height: 168.4 ± 6.7cm; mean ± SD), including: 3 forwards (FW), 7 mid-fielders (MD), 5 defenders (DF), and 3 goalkeepers (GK). Players practiced outdoor during spring off-season training camp for a total 14 practices (WBGT: 18.3 ± 3.1 °C). The main outcome measures included body mass change (BMC), sweat rate, urine and sweat electrolyte concentrations, and fluid intake. Results were analyzed for comparison between low (LOW; 16.2 ± 2.6° C, n = 7) and moderate risk environments for hyperthermia (MOD; 20.5 ± 1.5 °C, n = 7) as well as by field position. The majority (54%) of players were in a hypohydrated state prior to practice. Overall, 26.7% of players had a %BMC greater than 0%, 71.4% of players had a %BMC less than −2%, and 1.9% of players had a %BMC greater than −2% (all MD position). Mean %BMC and sweat rate in all environmental conditions were −0.4 ± 0.4kg (−0.5 ± 0.6% body mass) and 1.03 ± 0.21 mg·cm-2·min-1, respectively. In the MOD environment, players exhibited a greater sweat rate (1.07 ± 0.22 mg·cm-2·min-1) compared to LOW (0.99 ± 0.22 mg·cm-2·min-1; p = 0.02). By position, DF had a greater total fluid intake and a lower %BMC compared to FW, MD, and GK (all p < 0.001). FW had a greater sweat sodium (Na+) (51.4 ± 9.8 mmol·L-1), whereas GK had the lowest sweat sodium (Na+) (30.9 ± 3.9 mmol·L-1). Hydration strategies should target pre-practice to ensure players are adequately hydrated. Environments deemed to be of moderate risk of hyperthermia significantly elevated the sweat rate but did not influence fluid intake and hydration status compared to low-risk environments. Given the differences in fluid balance and sweat responses, recommendations should be issued relative to soccer position.

ACS Style

Haoyan Wang; Kate Early; Bailey Theall; Adam Lowe; Nathan Lemoine; Jack Marucci; Shelly Mullenix; Neil Johannsen. Effects of Field Position on Fluid Balance and Electrolyte Losses in Collegiate Women’s Soccer Players. Medicina 2020, 56, 502 .

AMA Style

Haoyan Wang, Kate Early, Bailey Theall, Adam Lowe, Nathan Lemoine, Jack Marucci, Shelly Mullenix, Neil Johannsen. Effects of Field Position on Fluid Balance and Electrolyte Losses in Collegiate Women’s Soccer Players. Medicina. 2020; 56 (10):502.

Chicago/Turabian Style

Haoyan Wang; Kate Early; Bailey Theall; Adam Lowe; Nathan Lemoine; Jack Marucci; Shelly Mullenix; Neil Johannsen. 2020. "Effects of Field Position on Fluid Balance and Electrolyte Losses in Collegiate Women’s Soccer Players." Medicina 56, no. 10: 502.