Health, Nutrition & Exercise Science Masters Theses

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Browsing Health, Nutrition & Exercise Science Masters Theses by browse.metadata.program "Exercise and Nutrition Science"

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    Communication in the Workplace: Does Communicating Breastfeeding Needs Affect Breastfeeding Duration for Working Mothers?
    (North Dakota State University, 2018) Millner, Madison Sara
    The purpose of this study was to identify if employer interpersonal communication and support are factors that reduce breastfeeding duration. An online, 85-item questionnaire was completed by employed breastfeeding mothers in the state of North Dakota. Of the 502 respondents, responses of a subset of 214 mothers who had concluded breastfeeding were analyzed. Shorter breastfeeding duration was seen in mothers who reported not being confident in combining breastfeeding and working. This was further seen in shorter breastfeeding duration among mothers who did not feel comfortable asking for accommodations or taking breastfeeding breaks. Mothers who were unsure about manager’s support of breastfeeding had shorter breastfeeding duration. Many respondents stated that their employer did not provide instrumental support. Over half of the respondents (60%) were unsure or disagreed/strongly disagreed that written policies concerning breastfeeding or pumping were present. Further research is needed to determine additional workplace barriers that reduce breastfeeding duration.
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    Leg Blood Flow Restriction during Rowing Exercise as a Countermeasure to Microgravity Induced Deconditioning
    (North Dakota State University, 2018) Mahoney, Sean Joseph
    BACKGROUND: Prolonged exposure to microgravity leads to a progressive loss in muscular strength, endurance and aerobic capacity (VO2). Rowing exercise combined with blood flow restriction (BFR) could be a supplemental countermeasure to maintain pre-flight muscle and VO2 function during prolonged spaceflight missions. METHODS: Twenty moderately trained male participants completed five sets of rowing exercise with and without BFR. Heart rate (HR), blood pressure (BP), surface muscle electromyography (sEMG), whole blood lactate ([La−]b), and rate of perceived exertion (RPE) were measured. STATISTICAL ANALYSES: Repeated measures ANOVAs were used to analyze HR, BP, [La−]b and SEMG and a paired sample t-test was used to analyze RPE. RESULTS: HR and RPE showed significant increases during BFR compared to CON (F(2,38) = 5.220, P = .010) and (t(19) = -5.878, P < .001), respectively. CONCLUSION: Exercise intensity and cuff inflation pressure used was sufficient to elicit increased cardiovascular responses.