Macroalgae compositions, processes for the preparation thereof, and applications thereof as a sports nutrition supplement are described. More particularly, a macroalgae composition includes a macroalgae extract including medium chain and long chain fatty acids in a ratio of about 1:0.0005 to 1:0.1. The composition is prepared by extracting macroalgae selected from green, red and/or brown algae or the combinationsusing suitable non-polar, semi-polar and polar organic and/or inorganic solvents and the combinations thereof. The composition is useful as a sports nutrition supplement in an effective daily dose, and enhances exercise endurance, resistance to muscle fatigue and/or supports protein synthesis performance. The composition is safe for human consumption and is useful as sports nutrition and for body building applications.