EM-SportScience

The force-velocity curve is a physical representation of the inverse relationship between force and velocity. i.e., the curve shows a decrease in muscle force as movement velocity is increased.

This interesting figure demonstrates the relationship between force and velocity with respect to weightlifting exercises.

Did you know that maximal power can be achieved when the athlete produces approximately one-third of maximum force at one-third of maximum velocity?!

Very interesting read for sport scientists and S&C coaches about high-speed running drills in team sports:

https://martin-buchheit.net/2021/04/27/2935/

- Why is it so hard to burn all of this fat?!

- The answer is: because it stores a lot of energy. No no, really, A LOT!

- How much is a lot? And how come it is not as hard to deplete your carbs storage (glycogen), as it is to deplete you fat storage?

- The answer is:
carbohydrate storage (glycogen) can typically sustain activity at about 70% of maximal working capacity, for only ~90 min, in an average healthy moderately active person.
However, our fat storage is much bigger than glycogen, so that an average person can theoretically sustain over 120 hours (!) of continuous effort. That is 80 times bigger than glycogen.

Depleting your glycogen would result in ~1500 Kcal, while depleting your fat storage would result (theoretically) in ~130,500 Kcal!

So, that is why!

PS: Replenishing your glycogen stores is crucial when you are in a negative energy balance. It is a must thing to do (in athletes)

Schematic representation of the most likely determinants of muscular efficiency during dynamic exercise.

Muscle fiber recruitment influences the O2 cost as well as ATP turnover during dynamic exercise, whereas muscle temperature, lactate, and pH in the investigated range had little or no effect.

Reference: Jones et al. (2011). Slow Component of VO2 Kinetics: Mechanistic Bases and Practical Applications. Medicine & Science in Sports & Exercise.

More about coffee- Coffee and autoimmunity:

Recent scientific evidences showed that coffee intake could be associated with decreased mortality from cardiovascular and neurological diseases, diabetes type II, as well as from endometrial and liver cancer, among others.

A recent review investigated the association between coffee intake and its influence on the immune system and the insurgence of the most relevant autoimmune diseases. It was found that:

- Coffee consumption has an immunomodulatory action and is postulated to induce an anti-inflammatory state.

- Coffee consumption may exert a protective role against multiple sclerosis, primary sclerosing cholangitis, and ulcerative colitis.

- MS patients could benefit from coffee consumption due to its role in mitigating disease progression.

- Hashimoto’s disease patient on levothyroxine supplementation therapy should avoid concomitant coffee consumption due to the possible impact on drug absorption.

- It might be advantageous for RA patients treated with methotrexate to avoid coffee consumption because of its postulated impact on drug efficacy.

- Celiac patients who have clinical symptoms albeit adhering to a gluten-free diet may improve after replacing their coffee preparations with blends characterized by lower reactivity with anti-gliadin peptide, for example espresso. [i.e. Real coffee not instant coffee products]

Reference:
Coffee and autoimmunity: More than a mere hot beverage Sharif K, Watad A, Bragazzi NL, Adawi M, Amital H, Shoenfeld Y. Autoimmun Rev. 2017 May 4. pii: S1568-9972(17)30127-1. doi: 10.1016/j.autrev.2017.05.007. [PMID:28479483]