Rest period

Each discharge performed at 2.25 Q on the light industrial flashlight (LIF) test one 4-min discharge at 1-h intervals for eight consecutive hours each day, with 16-h rest periods ie, 32 min of discharge per day. 

If the cycle has a short-time rating, with a period of energization and one of rest, the motor will obviously cool during the de-energizing period, and depending upon the peak load and tlie rest periods, a comparatively lower output motor can perform duties at higher loads. The equivalent output for the load cycle of Figure 3.16 is... 

RISK FOR INJURY Some patients with a viral infection are acutely ill. Others may experience fatigue, lethargy, dizziness, or weakness as an adverse reaction to the antiviral agent. The nurse monitors these patients carefully. Call lights are placed in a convenient place for the patient and are answered promptly by the nurse. If fatigue, dizziness, or weakness is present, the patient may require assistance with ambulation or activities of daily living. The nurse plans activities so as to provide adequate rest periods. 

Figure 2. Force generation and energy metabolism in human quadriceps femoris muscle stimulated intermittently at 20 Hz, with 1.6 sec tetani with 1.6 sec rest periods between tetani. The upper panel shows force, ATP turnover rate, and pH the middle panel, the concentrations of PCr, P and lactate and the lower panel, ATP, ADP, IMP, H, and calculated H2PO4. From Hultman et al. (1990), with permission from Human Kinetics Publishers.

Increased creatine and PCr concentrations have been achieved by giving creatine orally. The creatine dose used was 20 g daily for 4—5 days, administered in repeated 5 g doses. Muscle creatine increased by 20-40% above the preadministration content and the PCr increased by 8-15% (Harris et al., 1992). Torque generation by the knee extensor muscles was measured during five repeated bouts of 30 isokinetic MVCs, with 2 min rest periods between bouts. The exercise protocol was performed four times, before and after placebo or creatine supplementation. The total peak torque production increased significantly in all five bouts of maximal... 

Figure 4. Ten bouts of high intensity cycle exercise, each with a duration of 6 sec and with 30 sec rest periods between bouts were performed on a given day. The entire exercise protocol was performed on four separate days by each subject (n = 8), before and after placebo and creatine supplementation. Mean power output was 882 watts. Upper panels (A1 and B1) demonstrate mean revolutions per min during the 0-4 sec period of each bout and the lower panel (A2 and B2) during 4-6 sec of each bout. The left panels (A1 and A2) show results before (o) and after (x) placebo and the right panels (B1 and B2) before (o) and after (x) creatine supplementation. The study was performed in a double blind manner.

Figure 6. Glycogen content in the vastus lateralis muscle as a function of cycling time at 75-80% of maximal oxygen uptake (VO2 max). Data points are mean values from 10 subjects. For each subject, exercise was performed repeatedly in periods of 15 min separated by 15 min rest periods. At the point of exhaustion and muscle fatigue, muscle glycogen stores were depleted. From Bergstrom and Hultman (1967) with permission from the publisher.

Frank, L., Iqbal, J., Hass, M and Massaro, D. (1989). New rest period protocol for inducing tolerance to high ox) n exposure in adult rats. Am. J. Physiol. 257, L226-L231. 

The cardinal symptoms and signs are weakness and fatigue requiring rest periods, gastrointestinal symptoms, weight loss, and hypotension. 

In the rest period the electrode should become free of vibration (with an hmde) and any undesirable liquid convection at its surface should be stopped ... 

The first integral denotes the rest period, — oo < t < 0, where the strain rate is zero. The second integral contains a relaxation function which we chose very broad, including relaxation times much larger than the period In/iD. Integration and quantitative analysis clearly showed (without presenting the detailed figures here) that the effect of the start-up from rest is already very small after one cycle... 

In the case of laying hens natural light may be supplemented by artificial means to provide a maximum of 16 hours light per day with a continuous nocturnal rest period without artificial light of at least eight hours. 

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