Nine 18- to 29-year-old females were studied while jogging and skipping at treadmill speeds of 4.0, 4.8, and 5.4 miles per hour. Comparison of metabolic demand, musculoskeletal stress, and perceived exertion indicated skipping imposed significantly greater metabolic demands and caused higher heart rates than jogging. Skipping was also rated more…

Investigated cause of abusive drinking among the elderly and treatment practices and counseling strategies used by professionals who serve them. Structured interviews with six practitioners who were knowledgeable about alcohol abuse among the elderly revealed consensus that alcoholism is a physiological disorder with attendant psychological and…

Obtained thresholds for octave-band noises with center frequencies of 0.4, 1, 2, 4, and 10 kHz and 1/3-octave band noises centered at 10 and 20 kHz from children aged 6 to 16 years. Compared results with findings for infants, preschool children, and adults. Continuing sensitivity improvements were evident from infancy well into the school years.…

As devices for measuring physical activity become more accurate and economical, researchers use them to study topics ranging from the aerobic capacity of children to the job performance of military aircrews. This article discusses various activity monitoring devices and their application. (Author/JL)

An introduction to terms and concepts associated with resistance training is given. Sports associated with this training, such as power lifting and body building, are described. The merits of free weights versus resistance machines are discussed. The article recommends a training program for beginners. (Author/JL)

A comparison of vocal development in deaf and hearing infants indicates that well-formed syllable production is established in the first 10 months of life by hearing infants but not by deaf infants, suggesting that audition plays an important role in vocal development. (PCB)

A series of computer simulations of the neuronal resting and action potentials are described. Discusses the use of simulations to overcome the difficulties of traditional instruction, such as blackboard illustration, which can only illustrate these events at one point in time. Describes systems requirements necessary to run the simulations.…

A panel of eight experts discuss the cardiovascular, lipoprotein, weight control, and psychological benefits of exercise on health. The challenge of motivating people to exercise regularly is explored. (Author/MT)

The authors critically examine the research on physical activity in the elderly to assess the elderly's capacity for exercise and the benefits accruing from exercise. Lower-intensity exercise programs attract a more representative group of senior participants and overcome many barriers. Implications for program planning and efforts are discussed.…

Explains the mechanisms and describes the processes that underlie gravitropism in roots. Reviews experimental efforts and investigative results that explored the causes of root behavior. (ML)

Female masters swimmers ranging in age from 20 to 69 were chosen for a study of their body composition and physiological responses at rest and during exercise. Two training groups were formed that differed on the basis of frequency, duration, and intensity of swimming workouts. Results are discussed. (Author/DF)

This study examined the effect of bicycle ergometer exercise at varying metabolic intensities upon the heart rate, electromyographic (EMG), and mood state responses to a timed mental arithmetric stressor of 12 adult males. Exercise influenced heart rate and EMG but not physiological and psychological responses to the arithmetic stressor.…

Outlines a sequence used to prepare and to administer examinations by computer. The sequence, based on programs described in an earlier issue of "The Physiologist," is presented under four headings: preliminary steps; taking the quiz; grading the quiz; and flexible options. Information on obtaining the programs is included. (JN)

Discusses renal neuroanatomy, renal vasculature, renal tubules, renin secretion, renorenal reflexes, and hypertension as related to renal nerve functions. Indicates that high intensitites of renal nerve stimulation have produced alterations in several renal functions. (A chart with various stimulations and resultant renal functions and 10-item,…

Examined group differences in self-reporting anxiety for one hundred chronic pain patients, an equal number of college students, and two smaller comparison samples. Pain patients, relative to nonpatients, acknowledged dramatically fewer total signs of anxiety. Also, pain patients endorsed significantly more somatic than cognitive indicators of…