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PubMed1986

Gains in range of ankle dorsiflexion using three popular stretching techniques.

Among modern stretching techniques none has clearly been shown to be the most effective for increasing range of motion. The most common stretching method comparisons are between static stretching (SS) and one or more Proprioceptive Neuromuscular Facilitation (PNF) technique(s). The two most frequently implemented PNF techniques are: contract-relax (CR); and contract-relax-antagonist-contract (CRAC). Previous comparative investigations among stretching methods have primarily observed changes in straight-leg hip flexion as a result of lengthening the hamstrings, a two-joint muscle. The present study observed gains in range of motion among three stretching methods (SS, CR, CRAC) of a joint limited by a single joint muscle, the soleus. Twelve subjects performed each of the three methods on separate days. Significant differences were observed among all methods (p = .001). Further analysis revealed the CRAC method was superior to the CR method (p less than .01), and the CR method was superior to the SS method (p less than .01). Significant pre-post-treatment gains in range of motion were observed as a result of the CR and CRAC methods, but not the SS method. The results of this study support the findings of those previous investigations for two-joint muscles in which PNF techniques were more effective than static stretching for increasing range of motion. Also, a reciprocal activation (CRAC in the present study) was the most effective for increasing range of motion.

Adult↗
PubMed1985

Evaluation of five popular methods for tick removal.

Five methods commonly advocated for tick removal from a human or domestic animal were evaluated. The application of petroleum jelly, fingernail polish, 70% isopropyl alcohol, or a hot kitchen match failed to induce detachment of adult American dog ticks (Dermacentor variabilis Say) attached for either 12 to 15 hours or three to four days. Use of forceps or protected fingers enabled satisfactory removal of 29 adult American dog ticks without leaving the mouthparts or attachment cement in the host skin. Four different methods were used to pull lone star ticks [Amblyomma americanum (L)] off the host using forceps (twisting, pulling steadily or jerking straight up, or pulling parallel with the skin). None of the mouthparts broke off, but, contrary to the American dog tick, the cement remained in the skin for all 22 of the Lone Star ticks. It is recommended that the tick be grasped as close to the skin as possible with curved forceps; if these are not available, use tweezers or protected fingers. Pull straight up with steady even pressure. If cement or mouthparts remain, then extract if that is practical. Disinfect bite site before and after tick removal.

1-Propanol↗