Some heartworm medications require a monthly administration, while others work even longer (up to six months with an injectible product called moxidectin). There are many choices of heartworm preventive medications available, from topical products to chewable oral medications; most come in both dog and cat versions. Monthly heartworm preventive medications do not actually stay in your dogâs bloodstream for 30 days. The active ingredients work to kill any larvae that have been in the system for the past 30 days, clearing the body each month.
This is sub-optimal. The glutes are slow twitch dominant by a few percent, but the hamstrings are composed of a whopping 70% fast twitch fibers. The erector spinae are slow twitch dominant by around 6%. This means you should use low reps for the hamstrings, but medium to high reps for the lower back and the glutes.
Let's take a look at these muscles. If we peel away the trapezius and the latissimus dorsi muscle that are on the superficial part of the back, we can see the muscles responsible for our posture. The erector spinae is a group of muscles that work together to extend the vertebral column and thus maintain good posture.n summary, the erector spinae muscles are innervated by spinal nerves, and they cause extension of the vertebral column, resulting in erect posture. The superficial erector spinae include the spinalis, longissimus and iliocostalis groups of muscles.