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Biomedical subjects

W M Felts

Publications and source records attributed to W M Felts.

9 recordsLinked to original sources
PubMed1992

Drug use and suicide ideation and behavior among North Carolina public school students.

We used data from 3064 respondents to the 1990 North Carolina Youth Risk Behavior Survey to examine the relationship between adolescent drug use and suicide ideation and behavior. Principal components analysis followed by varimax rotation was performed separately on the drug use and suicide items. Correlation coefficients computed between the two sets of factor scores and comparison of mean drug use factor scores revealed that drug use, particularly of crack/cocaine, was related to increased suicide ideation and behavior.

Adolescent↗
PubMed1989

Relationship between ratings of perceived exertion and exercise-induced decrease in state anxiety.

24 females (aged 18 to 28 yr.) completed two 24-min., randomly ordered bicycle ergometer exercise bouts at workloads maintaining steady state at 30% and 60% heart-rate reserve. Ratings of perceived exertion (RPE) were recorded at 3-min. intervals from Minutes 9 to 24 of exercise. State anxiety was measured prior to, immediately following and 50 min, after cessation of exercise. Regression analysis indicated no relationship between RPE and the pre- to postexercise changes in state anxiety.

Adolescent↗
PubMed1988

Influence of aerobic fitness on ratings of perceived exertion during light to moderate exercise.

Based on scores from a maximal exercise test on a bicycle ergometer, 24 college-age women were classified into three aerobic-fitness groups. Each subject then completed two randomly ordered cycle exercise bouts at 1-wk. intervals. The exercise bouts required the subjects to pedal for 24 min. attaining and then maintaining a target heart rate of either 30% or 60% of heart-rate reserve. Ratings of perceived exertion (RPE) were reported at the end of each third minute of the exercise period. Repeated-measures analysis of variance indicated the RPE was significantly related to the exercise workload and duration of exercise. No main effect was found for fitness. Two-way interactions were detected for fitness x duration of exercise and for workload x duration of exercise.

Exercise↗
PubMed1987

Recovery of dynamic muscular endurance.

Recovery of the rate of dynamic muscular endurance was measured in two groups of college-aged males. Subjects were required to perform elbow flexion (between the angles of 70 and 170 degrees) for as long as possible at the rate of 38 contractions/min while loaded with 1/6 of their maximum isometric strength (MVC). The task was terminated when the subject fell four contractions behind the required cadence or failed to complete two successive contractions. Subsequent to the task the subject was given a predetermined rest period after which a second fatigue bout to failure was performed. The rest intervals for Gp I (n = 22) were 5, 15, 45, 135, 405, and 1215 seconds, while the rest intervals for Gp II (n = 17) were 10, 30, 90, 270, 810, and 2550 s. Each subject completed six recovery intervals with the order of administration assigned at random. The percentage of recovery was calculated by dividing the exercise time of the first bout into the time of the second bout. These normalized data for the two groups were combined for analysis providing a 12 point recovery curve. The percentage of recovery ranged from 15.4% after 5 s to 91.8% after 2550 s. Analysis of the data revealed that the recovery pattern of dynamic muscular endurance progressed very rapidly initially, reached 50% at approximately 2 min and 15 s and was slightly less than 90% complete at 20 min. Exponential analysis of these data yielded a three-component curve.

Adolescent↗
PubMed1985

Exercise science and health enhancement: a curriculum imperative in professional preparation.

Exercise as a strategy to maintain and promote health continues to gain prominence because of increasing public participation in exercise programs and a growing body of literature supporting its efficacy. This paper addresses the need for including exercise science in the formal training of the health educator by 1) summarizing research concerning the effectiveness of exercise in health maintenance and enhancement, 2) presenting a rationale for including exercise science in the health educator's professional preparation curriculum, and 3) providing an outline for the course.

Curriculum↗
PubMedDate not supplied

The impact on factory workers of health risk appraisal and counseling in health promotion.

One hundred thirty-six subjects employed at a textile plant in eastern North Carolina participated in a voluntary health risk appraisal (HRA) administration and health screening at the work site. The subjects consisted of 74 whites (73% women and 27% men) and 62 blacks (98% women and 2% men). Six weeks after the HRA administration and health screening, participants received their results at individual counseling sessions conducted by health educators and registered nurses, who presented prevention recommendations derived from HRA and screening results related to select physiological indices and lifestyle behaviors. Six months following the initial intervention, we conducted an identical follow-up screening. Eight months following the initial intervention, we administered a health behavior questionnaire designed to determine the impact of the HRA on select health-related behaviors and subjects' recall level of HRA recommendations. Results of this study indicate that changes in subjects' self-reported health behaviors were related to recommendations presented at counseling sessions. The majority of the subjects accurately recalled HRA recommendations eight months after HRA administration. Ninety-three percent of the employees indicated making at least one positive lifestyle behavioral change, and 50% of the subjects who were referred to a doctor or health professional based on HRA recommendations reported doing so. Risk age did not appear to influence the individual's likelihood of attending the second health screening. Ninety-eight percent of the subjects indicated that they would like a yearly HRA or health screening conducted at the work site, and 88% of the subjects indicated that the HRA results encouraged them to continue practicing healthy behaviors.(ABSTRACT TRUNCATED AT 250 WORDS)

Adult↗