Correct Answer: C. Face validity Mark, Eric, and Dana all described this correctly. The key phrase in the question is that the test “appears appropriate” before any data are collected. Face validity is based on: - Perception - Surface-level appropriateness - Not statistical evidence Damian’s explanation captures it well: “it looks good, so it makes sense to do.” This isn't ALWAYS the case of course. For example an IMTP has high criterion validity but low face validity, meaning that even though "on the face of it" this test doesn't appear to measure strength as well as a 1RM back squat, it's still highly valid in other ways. Why the other answers are incorrect: A. Criterion-related validity Requires correlation with a gold standard or outcome measure. No data or comparison is mentioned here. B. Content validity Refers to how well a test covers all aspects of a construct. This would require a more comprehensive evaluation of lower-body strength, not just agreement that one test “looks right.” @Mark Jones @Eric Rueda @Dana Sowards @Damian Daniel

Correct Answer: B Katherine and Alex were both on the right track pointing out that sprinting is a power/velocity task that requires high neural output and low fatigue. What’s happening: - Heavy squats at 87.5% 1RM create significant CNS fatigue - Even with rest, that fatigue accumulates across sets - Sprinting depends on rate of force development and motor unit firing, which are highly fatigue-sensitive. Sprint performance drops while strength work stays stable The issue has more to do with sequencing interference, not just rest. Why B is correct: Separating sessions (later in the day or a different day) preserves max sprint quality (fresh CNS) and maintain strength stimulus, eliminating competing high-intensity demands in the same session. This aligns with power-first sequencing and fatigue management principles found in the text. Why the other answers are incorrect: A. Increase rest to 5 minutes More rest helps, but does not remove the underlying interference from pairing two high neural-demand tasks. Fatigue still accumulates across repeated efforts. C. Increase sprint volume This increases fatigue further and would worsen sprint performance decline, not fix it. In addition, Maya made great points about comms with the soccer staff and balancing technical/tactical sprint volume with direct sprint training volume @Katherine Heekin @Alex Verdugo @Maya Stainbrook

Correct Answer: B Julia, Katherine, and Eric all stated the correct guideline: ~1.5 L of fluid per kg of body mass lost. This athlete lost 2.0 kg, so: 2.0 kg × 1.5 L/kg = 3.0 L The reason for the 1.5× multiplier: - Not all ingested fluid is retained - Ongoing losses (urine production) continue post-exercise - Additional fluid ensures complete restoration of plasma volume Why the other answers are incorrect A. 2.0 L Replaces only the measured body mass loss, but does not account for continued fluid losses, so rehydration is incomplete. C. 4.0 L Exceeds evidence-based recommendations. This does not improve rehydration and may increase risk of unnecessary fluid overload or dilution (hyponatremia) @Julia Pinnell @Katherine Heekin @Eric Rueda

Correct Answer: B Katherine was right when she pointed out that GH is tied to metabolic buildup (lactate). That’s exactly what B creates: - Moderate load → more reps per set - High volume → more total work - Short rest → metabolites stay elevated for longer, and build from set to set That combination drives the largest acute GH response. Why the other answers are incorrect: A. High load, moderate volume, long rest Long rest reduces metabolic stress, so GH stays lower. It also lowers achievable volume. C. Very high load, low volume, long rest With low volume and plenty of recovery there is minimal metabolic buildup, and therefore minimal GH response.