Given an abstract, indicate which of the provided candidate titles (Option1 and Option2) best describes it (respond with the text of the title, not option1/2).

Abstract: To investigate the changes in diaphragm electromyogram (EMG) during the course of severe loaded breathing, we subjected five conscious adult sheep to inspiratory flow resistive breathing (resistance greater than 150 cmH2O X l-1 X s) for up to 2-3 h and studied the total EMG power per breath (iEMG) and the EMG power per unit time after dividing the duration of EMG activity within each breath into three equal parts (iEMG1, iEMG2, and iEMG3). Both total breath iEMG and transdiaphragmatic pressure (Pdi) increased, remained at a high level for a certain period of time, and then started to fall. A change in the pattern of iEMG within a breath was observed during loaded breathing. The increase in total-breath iEMG was associated mostly with an increase in iEMG3, or the last part of the EMG power within each inspiration. Similarly, the decrease in total breath iEMG was primarily due to a decrease in iEMG3. We conclude that, in sheep subjected to severe IFR loads for prolonged periods the marked increase in total-breath iEMG at the beginning of loaded breathing and the marked decrease in this iEMG at the time of decrease in Pdi are largely due to changes in iEMG that occur during the latter third of each breath. We speculate that during loaded breathing the recruitment pattern of diaphragmatic muscle fibers changes during the course of an inspiratory effort.
Which is the apt title for the abstract? option1: Within-breath electromyographic changes during loaded breathing in adult sheep. option2: Focus on keratotomy results [letter]
Within-breath electromyographic changes during loaded breathing in adult sheep.

Abstract: Serum estradiol, estriol, progesterone, PRL, and hCG concentrations were measured at 4-week intervals in 40 pregnant women who chronically abused alcohol and in 20 abstinent pregnant women. Sixteen alcohol users gave birth to infants with the fetal alcohol syndrome (FAS), whereas the remaining 24 infants of alcohol users and all infants of the abstinent women were healthy. The women whose infants had the FAS had decreased estradiol and estriol levels throughout pregnancy. Progesterone levels also tended to be low. In contrast, the alcohol users had increased PRL levels during the 16-24th weeks of pregnancy compared with those in the abstinent women, but this rise was not related to the FAS. The concentrations of hCG fluctuated widely, without any consistent difference between alcohol users and abstinent women. Thus, heavy maternal abuse of alcohol resulting in FAS is accompanied, primarily or secondarily, by reduced estrogen concentrations throughout pregnancy and increased PRL levels during the 16-24th weeks of pregnancy.
Which is the apt title for the abstract? option1: Estradiol, estriol, progesterone, prolactin, and human chorionic gonadotropin in pregnant women with alcohol abuse. option2: Sodium channel kinetics in normal and denervated rabbit muscle membrane.
Estradiol, estriol, progesterone, prolactin, and human chorionic gonadotropin in pregnant women with alcohol abuse.

Abstract: 164 patients with early cancer of the lungs, i.e., without extrathoracic spread or distant metastasis, were examined. Subjective and objective characteristics of the pain were studied. A correlation was found between the location of the neoplasm, the location of the pain and the characteristics of the sensory changes. These observations may be a useful contribution to the early diagnosis of primary carcinomas of the lungs.
Which is the apt title for the abstract? option1: Pain in early cancer of the lungs. option2: Partitioning of the L4-L5 dynamic moment into disc, ligamentous, and muscular components during lifting.
Pain in early cancer of the lungs.