The Accuracy of Recreational Athletes in Self Detecting Ventilation Threshold During a Maximal Exercise Test

INTRODUCTION: Ventilatory threshold (VT) is where minute ventilation (VE) increases nonlinearly with increasing exercise intensity. Prior studies have shown that subjects can recognize VT by changes in breathing during exercise. Teaching recreational athletes to use VT as a training method could result in better quality training. PURPOSE: Determine if recreational athletes can accurately perceive changes in ventilation associated with VT during maximal exercise testing. METHODS: Subjects were recruited (n=20, age= 20.5 ± 1.7 yrs.) to participate in the study. Subjects performed a modified maximal treadmill protocol with gas analysis. Subjects indicated when they noticed a considerable change in breathing and were recorded as perceived ventilatory threshold (PVT). Actual VT was calculated from maximal exercise test results. Pearson product correlation and independent samples t-tests were used to test relationships and mean differences between ventilatory frequency (VF), minute ventilation (VE), and tidal volume (Vt) at PVT and VT. Separate paired sample t-tests were used to assess the differences in perceived and actual ventilatory threshold (VT) for oxygen consumption (VO2)(mg/kg/min) and time (min). Mean differences were accompanied with their 95% confidence intervals (CI) and Cohen’s d values. The assumption of normality was tested using the Shapiro-Wilk test. Significance was set at p \u3c 0.05. RESULTS: There were no violations of normality for either paired comparison. There was no statistical difference in VO2 between actual and perceived VT, t(19) =0.807, p =0.429; Actual =37.90±7.26 and Perceived =36.49±7.07. There was a statistical difference of 2.00(0.21, 3.80) min between actual and perceived VT, t(19) = 0.2.332, p = 0.431, d =.521 with actual VT at 6.03±3.11 and perceived VT at 8.03±2.73. A strong positive correlation was found between actual VT and PVT with TV (r=.88). No statistically significant differences for mean difference between %/VO2max, VF, VE, and Vt at PVT versus VT were found. CONCLUSION: In the current study, recreational athletes were unable to accurately detect changes in their breathing associated with VT. Better recognition of PVT might be possible with more exercise experience. If this is achieved, PVT could be useful in prescribing exercise for this population

Archarios, 1991 Fall

Issue No. 03. Editor: Susanne Viscarra. Faculty Advisor: Paul Olsen.https://digitalcommons.coastal.edu/archarios-magazine/1014/thumbnail.jp

Archarios, 1992 Spring

Issue No. 04. Editor: Susanne Viscarra. Faculty Advisor: Paul Olsen. Printed by The Printing Port.https://digitalcommons.coastal.edu/archarios-magazine/1015/thumbnail.jp

On Campus, February 22, 1993

A Newsletter for Faculty and Staff of Coastal Carolina College. Volume 2, Number 4https://digitalcommons.coastal.edu/on-campus/1024/thumbnail.jp

Persistent Hypothermia and Excessive Sweating Following Intrathecal Morphine Administration in a Teenage Boy: A Case Report

INTRODUCTION: Opioids are used intrathecally to manage surgical pain. There are few reports of hypothermia after spinal morphine injection, none in the pediatric population. We present a teenager's case of mild hypothermia. CASE PRESENTATION: A 15-year-old boy was scheduled for elective abdominal laparotomy. General anesthesia was combined with spinal anesthesia, using levobupivacaine and morphine. In the recovery room, he presented a decreased tympanic temperature (34.4°C) associated with excessive sweating, hyperglycemia, and complained of feeling hot. All other vital signs were normal. It was decided to maintain clinical vigilance and hourly monitoring of temperature and glycaemia values. Despite active warming, he remained hypothermic for 16 hours, with gradual remission of symptoms and normalization of glycemic values. It is unknown how intrathecal morphine causes hypothermia. The most viable hypothesis is its effect on the hypothalamus. In our case the most probable causes of post anesthesia hypothermia were excluded; therefore, we can admit that the cause of hypothermia was the spinal administration of morphine. Some reports used naloxone and lorazepam successfully. In our report, they disappeared spontaneously 16 hours later, which corroborates our diagnosis. CONCLUSIONS: Children undergoing subarachnoid block with with intrathecal morphine may develop a disruption on thermoregulation, leading to a resistant postoperative hypothermia associated with excessive sweating.info:eu-repo/semantics/publishedVersio

Removal of fungal ball from the jaws by lefort i osteotomy : difficulty in diagnosing patients with chronic sinusitis

Aspergillosis, aka fungal ball (FB), is classified as a type of non-invasive fungal rhinosinusitis, which usually occurs unilaterally in the maxillary sinus of an immunocompromised patient. Its diagnosis is complex and depends on the association between

Evaluation of effect of a vitamin-based barrier cream on the clinical severity of actinic cheilitis : a preliminary study

Actinic Cheilitis (AC) is a pathological condition of the labial mucosa considered potentially malignant. The aim of this study was to investigate the effect of treatment of AC with daily use of a vitamin-based barrier cream. For this clinical study, 36 participants with lower-lip AC were recruited from three oral medicine services. At baseline, participants were evaluated by clinical examination and clinical severity of AC was classified as grade I to IV. All participants were dispensed a tube of a barrier cream containing vitamins A, D, E and ZnO to apply once nightly for 90 consecutive days. Monthly follow-up was performed to reclassify AC clinial severity. The primary outcome of interest was clinical remission of AC at 90-day follow-up compared to baseline. Progressive remission of AC lesions was observed as early as the first month and throughout the assessment period (p = 0.000). The 3-month period was insufficient for remission of lesions, especially among male participants (p = 0.002) and with a longer sun exposure in years (p = 0.007). Daily use of the vitamin-based barrier cream had a promissing positive impact on the severity of actinic cheilitis. However, a 90-day course of treatment was not sufficient to achieve lesions remission. The findings of this study suggest a promising new avenue for the treatment of lower-lip AC

MSS0461. Stereograph card collection finding aid

The collection comprises stereograph cards and a stereoscope. The cards, predominantly from the United States, are of scenic and historic places, historic events, and for entertainment

On Campus, May 8, 1992

A Newsletter for Faculty and Staff of Coastal Carolina College. Volume 1, Number 9https://digitalcommons.coastal.edu/on-campus/1008/thumbnail.jp

Combining interscalene brachial plexus block with intravenous-inhalation combined anesthesia for upper extremity fractures surgery: A randomized controlled trial

AbstractBackground: A parallel-group randomized controlled trial (RCT) was conducted to evaluate the effect of combining the interscalene brachial plexus block (IBPB) with Intravenous–inhalation combined anesthesia to isolated Intravenous–inhalation anesthesia in the upper extremity fractures surgery of elderly patients. Methods: One hundred elderly patients who underwent upper extremity surgery were randomly assigned to received isolated Intravenous–inhalation combined anesthesia (group CI, n = 50) and IBPB associated with Intravenous–inhalation combined anesthesia (group NB, n = 50). Associated side effects, recovery time after operation, as well as the dose of intraoperative vasoactive agents and auxiliary drugs were noted. Results: The two groups were not significantly different in gender (P = 0.539), ages (P = 0.683) and weight (P = 0.212). Five patients (10%) in the group NB and 17 patients (34%) in the group CI suffered from preoperative hypotension (P = 0.004). Besides, lower incidence of other adverse effects such as mental stress, incision pain and hypertension were also found in the group NB; however, the differences were not statistically significant (P > 0.05). The consumption of general anesthetics in the group NB was significantly less than that of the group CI (propofol, P = 0.004; lsoflurane, P < 0.001), and the recovery time of the group NB was significantly shorter than that of the group CI (P = 0.020). Conclusion: Combining IBPB with Intravenous–inhalation combined anesthesia in elderly patients hold a greater potential for upper extremity fractures surgery due to its improved clinical effectiveness and fewer side effects